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Asus A8N-E
MSI 890FXA-GD70 AM3
MSI xpower Big Bang x58
EVGA 680i SLI (122-CK-NF68-A1)
EVGA 680i SLI (122-CK-NF68-T1)
Gigabyte EP45-DQ6 (bottom slot only)
Foxconn A7DA-S 3.0 (had unstable behavior with the 4th GPU)
ASUS A8N32-SLI
ASUS P5K
ASROCK N7AD-SLI
ASUS P5N-T (On both x1 -> x16 in x16 and in x1 slot)
ASUS M4A88T-V EVO/USB3
Gigabyte GA-990FXA-UD5 : Mixed results https://bitcointalk.org/index.php?topic=36061.msg847139#msg847139
MSI 990FXA-GD80
Asus - P7P55D-E Pro
EVGA 790i SLI Ultra needs shorting on 1x and 16x slots.
EVGA P55 Micro: x1 needs shorting
GA-M55S-S3
MSi K9N Neo-F V3  https://bitcointalk.org/index.php?topic=191530.msg2020681#msg2020681
ASUS Crosshair V Formula-Z
...

http://blog.zorinaq.com/images/pcie-short-schematic.png

here's two more i have and tested:

MSI 890FXA-GD70 AM3
MSI xpower Big Bang x58

Asus P5K

You can get some very cheap extenders now! You don't need to put a x16 card directly on the slot if you get an extender for 4 bucks.
https://bitcointalk.org/index.php?topic=36106.msg445182#msg445182

You don't get it, problem is when you can't plug an 1x extender into an 1x slot and have it working.

So they don't work even with extenders?

oh wait, i think i may have read it wrong. the boards i listed is for x1 extender into x16 slots. i think boards should work find plugging x1 extender into x1 motherboard slots without shorting pins.

Anyway with this pin shorting tip I think we have yet to find a board with a pcie that can't be used for mining.

Here are two more:

EVGA 680i SLI (122-CK-NF68-A1)
EVGA 680i SLI (122-CK-NF68-T1)

ECS P45T-A requires it, but the board also got toasted after a few days, so I wouldn't suggest it. :)

Glad you posted this - i just got my hands on an Asus A8N-E.  I think you prolly saved me a lot of frustration.

The bottom slot on EP45-DQ6 (8x) require the mod.

Maybe it's like yours.

PS : no problem with UD3R

Anyone know if this trick works with asus P5EVM-HDMI

It failed for another reason. Pins A1-B17 are meant to be shorted. Perhaps you pulled too much current on the motherboard's 12V rail.

ASUS A8N32-SLI too.

Foxconn A7DA-S 3.0 had some crazy behavior with the 4th GPU,

The mod seems to have fixed it. (first slot)

Note to self : shorting B1 with A17 will destroy the slot, but not the card.   :D

wait, what? I was just trying to short these pins and now you guys re telling me it'll fry my board? so whats the point of this thread?

He said B1-A17. The right pins are A1-B17.

If you can't pay attention to these details, maybe you shouldn't even be trying to short them  ::)

Actually, looking at the pinout, shorting B17 to either B16 or B18 should work. Just disconnect the thing from the motherboard if you don't have anything connected.

Shorting A1-B17 worked on Foxconn (card was detected and running). However after running for 12 hours it seems like the PCIE slot on mobo died. I tried using the second port but apparently it died too shortly after.
I was running total of 3 5830 cards on Foxconn (overclocked from 800 to 900). Is it possible that the card was draining too much power from PCIE x1 which caused it to get damaged?
When you run cards on PCIE x1 do you also redirect A2,A3,B1,B2,B3 pins to use 12V directly from PSU isntead of mobo?

First of ,,, WHAT foxconn ? It was only causing stability problem on mine. A7DA...

It is Foxconn A7DA-S 3.0.

I can't say for sure whether the port is physically damaged or is it just software issue. On the other machine with the same mobo, there are periods of time when sometimes card is working, sometimes system gets unstable (freezes), but the card is being detected and sometimes card is not being detected at all  - I haven't noticed any rule to it though.

I have absolutely no problem on mine, I even wonder if it require the mod I think I had problem because of a bad card.

I used for a while the two yellow slot one in-between without the mod, I suggest you try them as-is. And check all card alone one at the time.

I only send power through the extender at the 5th GPU.

Hey,

testet on a Gigabyte MA770 ud3 and the only shortening you need is in the 16x Slot if using an 1x riser there.
The 1x slots with 1x riser work without.

My setup:
3* 1x->16x Rrser in 1x slot
1* 1x->16x riser in 16x slot (with shortening)

Useer

RESOLVED:
I've switched to regular x1 -> x16 ribbon riser and switched from Windows 7 to BAMT. With this, Foxconn A7DA-S 3.0 is nicely mining using 3 cards (2 directly in PCIE x16, 1 in PCIE x1 using riser) *without* shorting any pins.

ASROCK N7AD-SLI requires this mod.

ASUS P5N-T needs this mod also.

(On both x1 -> x16 in x16 and in x1 slot)

Without this page i would have been lost long time ago

adding mine:

ASUS M4A88T-V EVO/USB3

I thought I would add to this thread - the motherboards listed that require shorting simply support PCIe hot plug card detection, they are not doing anything wrong. What is doing something wrong is the 16x-1x adapter.

I thought I would investigate whether the video card should be connecting all available hotplug pins (there is one at 1x, 4x, 8x, and 16x card length). The highlighted section of the PCISIG spec says cards should only short the last hotplug detect pin back to hotplug ground. Therefore we can conclude that 16x=>1x adapter cables should ideally have been designed to connect all PRSNT2# lines on the 16x connector together (B81, B48, B31, B17) to pass any width card's hotplug signal through to the 1x detect line.

As you can see in the diagram below, PRSNT2# only detects if it has been grounded, B17 (the pin for 1x cards) can be shorted to B16 or B18 for ground as mentioned by Zoomer. The A1 hotplug ground has a shorter finger pad; this along with a short finger hotplug detect at the other end of the complete card length ensures the card is fully inserted before the hotplug signal is connected. The PCIe 1x adapter should likewise have a shorter B17 finger on the card that plugs into the mainboard.

http://we.lovebitco.in/img/pcie-hotplug.png

Asus P5Q-E, both PCIe x1 slots require shorting A1 with B17 pins (unless you hot plug the GPU but then it doesn't always work for some reason)
extenders I use are not powered and are 19cm if this information is of any use for you

Gigabyte GA-990FXA-UD5, Finally got it stable with 6 cards

Lots of problems with the mobo at first, some cards would work with 1x extenders and some wouldn't and never got it to detect 6 cards at the same time. Ended up solving it by shorting A1 to B17 in the 16x_2 and 8x slot and it seems to have fixed it (16x_1 slot might have to be shorted as well but got a card in that slot that seems to work in any motherboard and slot no matter what, pins are shorted on the card itself perhaps?) 4x and 1x slots working by default. Using flexible 1x extenders in all slots.

 

Also the MSI 990FXA-GD80 needs it.  I presume this is a successor to the 890.  I just got the 990 and tried the fix and it worked.  My x1 slots were not working before the fix either, but after the fix bot the x1 and x16 slots worked.

Now I have a few more ribbons to solder... I see the suggestion of shorting with B18 because B17 simply needs to see ground.  And seeing ground always will be ok for the mobo (is that so?).  For ease of soldering tomorrow I will solder B17 to a molex connector.  That should be just as good right?  My ribbons have molex power supplies to the 5 power wires so each ribbon has a free ground on the molex for me to use.

EVGA 790i SLI Ultra needs shorting on 1x and 16x slots.

I realise this post is a bit dated but I hope the OP will see it.

I would really appreciate some more detail here. I have two of these Gigabyte GA-990FXA-UD5 boards and I am damned if I can get anymore than 3 5850's working on each board. Each board acts exactly the same. That is after trying all of the above and anything else that I can think of.  ie 16 -> 16 extenders 1 -> 16 extenders powered and non powered, jumpers and no jumpers. It simply will not see the cards in the "lspci" command.

Specifically what version of the Gigabyte GA-990FXA-UD5 are you talking about and which version of Bios are you using?? I have the current Bios Version F8 installed. My board is marked as "V 1" ie it is the version that came preflashed for the AMD Bulldozer chip whereas I believe the earlier boards did not. I am starting to wonder if there may have been other changes made as well

I am trying to use Xubuntu 11.04 64b, SDK 2.4 with 11.6 drivers and CGMiner 2.3.2 -4.2.

Thanks

Do I need this shortcut trick to plug card into full 16x slot with only 1x to 1x riser on my 890FXA? I guess so (to let mobo know that it can use just 1x mode) but you know better to be safe then soory so I am asking first :)

Shouldn't this thread be transformed into a wiki (and organized by platform/socket)? Probably be little easier to find a specific board/cpu/manufacturer, just an idea  ;D.

EVGA P55 Micro:

-x1 needs shorting, and powered riser; unstable when booting into Win 7 64 (using a 6850 or a 7970)
-Legacy PCI slot with riser to PCIE x16 and a powered riser makes system unstable and locks, won't reach Win 7 64 login.

Wiki, Well I'm trying to update OP with new board contribution.

Are you sure you need powered extender for, what 2-3 cards ?  It is recommended when going 5 gpu and above.

I am going to be testing out my pcie x 1 slot with an adapter & a card.

Would any type of overclocking while using the pcie x 1 slot, fry the pcie x 1 slot and/or the gfx card?

What are you guy's thoughts?

I am taking extreme caution before preceding.

Of course, this question is for the slot being shorted and not shorted.

If I use a video card on the x1 slot, it apparently won't be detected unless it is a powered riser (while other slots are populated with gpus), I do not know why that is. I use a powered riser on the PCI slot just to be cautious, given that it provides lower wattage at the slot.


I tested running only a 7970 on x1 of my P55 micro, I was able to raise from stock 925 MHz up to 1200 MHz without any issues. Although, needless to say, once you start increasing clock, wattage will increase, it should not be an issue if the card is receiving enough power (and good cooling).

Ok, fantastic, ty. I was worried as stated here in the thread, few come back saying this or that fried.

Are you using a powered riser? or a combo of x1 to x16 followed by a x16 to x16 with a molex power adapter?

The ASRock Z75 Pro3 1155 does not require short pinning of the PCIe x 1 slot.

Hmmm... I would get the same hash rates using a 7970 on either a x1 or x16. Although, I did need to reconfigure (such as workload, size, cpu or gpu ram, bfi, etc) the 7970 when it was newly installed in the x1 slot, but I'm assuming you already did that?  PCIE bus clock probably isn't the problem, you have more than enough bandwidth to do mining on x1 pcie.

Does the slot on the board have to be shorted or can I sort the pins on the end of the cable?

I figured the shorting is why my board doesn't see a card (Gigabyte 965P-DQ6)? I'll post more specific results tonight.

Either or should work. Also if you insert the jumper on pcie x1 slot, as you slide an adapter in the slot, the wire gets secured.

No luck... must be a bad cable. I have some new ones coming Monday. Will post back again later.

The Foxconn Destroyer needs both x1 and x16 slots to be shorted to use extenders (x1-x16 or x1-x1).

ah ha! helps if you read the manual... installing a card in the second pci x16 slot disables the 3 x1 slots... ungh...

No shorting needed on a GA-965P-DQ6 !

ASUS P5Q DELUXE also needs this fix

Asus F1A75-V EVO does also

How do you guys usually do the short?  Just cut it out of the ribbon and then connect them with a wire?

You see the picture in the OP ? This red thing is a wire,

Use a solid core cat5 braid and insert in behind the pin of either the extender or the slot itself.

How do I keep it from making contact with the other nearby pins?

Look at it a little longer,
Every pin are isolated in their own little compartment, stick the wire in there. (On the motherboard side, not gpu)
http://blog.zorinaq.com/images/pcie-short-schematic.png

Okay, shorted successfully using 4 mini staples soldered to two cut molex cable wires and successfully activated 2x PCIe 1x slots with risers on an eVGA 680i motherboard.  Yay!  If you have mini staples they're perfect for this, although once you stick the card in it bends the normal wire and messes up the slot permanently for use without the short.  Not really a big deal though.

Solid core 24 AWG , solderinh ?

Problem?  The rig seems happy enough.  It was just a dab to get it to stick to the staple.

Here again : https://i.imgur.com/gwVOD.jpg

I'm somewhat confused by the information I've read after reading this thread. First, some information.

I'm using a 1x-16x riser with an HD 6950 on an XFX 750i Intel 775 DDR2 Motherboard. The OS(Win7x64) recognizes the card and I'm able to mine when I use a 16x-16x riser. I don't need to short the card or use a dummy plug. So, since I also purchased a 1x-16x riser (as I have an additional PCI-E slot, though it's only 1x) I figured I'd give the card a try in the 1x slot to see if I can still mine on the card. The card boots, but Win7 doesn't even show the card in the device manager.

So, here are some questions:

• Will I need to short the riser or use a dummy plug?
• How am I to short an extender from the motherboard side instead of the GPU side? Judging by the picture above, I have to remove the cables that are already attached to the extender and short it that way? Why do I have to destroy my brand new riser to make it work?
• Am I shorting the extender at the motherboard or am I shorting the extender at the card?

What picture are you looking at ? It's obvious the cable is entirely separate, (taken from a cat5 cable.)

On destroying brand new risers .... I MEAN ,,, no destruction needed but these things are ~4$ each.

you are shorting, end of the story, It doesn't matter where you short, you can do the above directly on the motherboard slot.

Asus M4N98TD Evo requires shorting pin A1 - B17 for PCIe 1x  :)
Works great BTW.
I have an AMD X6 1055T on it, running at 0.9 Vcore and 1000MHz (multiplier @ 5x). Very cool and energy efficient.

My M3A32-MVP Deluxe board died, so I had to use another board.

Think I got it.
https://www.dropbox.com/s/5noexk5yr3r9j42/2013-04-06%2017.48.11.jpg
The damage to the slot that the man is holding in his hand confused me.

That's how I did it; be aware that when you stick the card in it tends to warp the pins with insertions in them.

Gigabyte GA-M55S-S3
requires pin shortening

added

I gotta say i just found this thread ...once again in the crypto world is a never ending journey of learning

To ask a couple of $64,000 dollar questions that have been driving me nuts

When trying to run 4 cards on risers (MSI 990fxa GD80) the 4th card will drop off after a while and long story short  u have to drop it back to the mobo to get the rig stable ...  u end up with best case 3 on non-powered risers and 1 on the board ... (as they get older 2 on board and 2 on risers etc ) I take it that there is no enough extra power from the mobo getting to all 4 cards risers add another level of overhead to this problem ???

And finally Long story short powered risers will fix this bullshit ???

This being true (please say its so ) i should be ok with a shorted A1->B17 and powered  16-> 1x riser on the 1 x slots on the gd 80 and also be able to get 6 gpu's (7950's) per board ??

Thanks in Adavance

MSi K9N Neo-F V3

Needed to short both 1x slots to get each one working. https://bitcointalk.org/index.php?topic=191530.msg2020681#msg2020681

added

I shorted A1-B17 on the 16x slots for 16x-1x riser on the ASUS Crosshair V Formula-Z mobo successfully.  Thanks to the OP for the original article.

when is shorting required ?

I have MSI Z77A-G45 and i can see 6 GPUs in Win7 x64 with 2 of them with driver errors (code 43).

Do i need Shorting for these 2 slots?
Or is shorting required just to see them in the system settings?

Which ATI Cat do you use for 4+ GPUs ?

It seems most Gigabyte motherboards doesn't like PCI-E riser even for x16 to x16. I myself is still trying to figure out how to get Gigabyte motherboard to find all of my 7970 connected to all the 4 x16 slot. I'm now able to see 3/4 Graphics card on riser with Xubuntu when i run the command "aticonfig --lsa" and out of the 3 only 1 seems to be working as the other 2 is not getting any temperature, core GHz, mem GHz, etc information.

I tried shorting pin A1 to B17(PCI-E x1, don't think this would work for me as I'm trying to get x8 and x16 slot on my motherboard to work with riser) and A1 to B48 (PCI-E x8) and A1 to B81 (PCI-E x16) each done separately.

Am hoping you would share exactly how you manage to get your PCI-E x16 slot to work. My motherboard is Gigabyte GA-Z77x-UP7. Thanks in advance...

Apparently the problem was from the riser cable not from the Gigabyte motherboard or graphics card. I tried it on my ASUS motherboard with ASUS graphics card and out of 4 riser cables only 1 is working without problem the other 3 is bad. The guy from cablesaurus offer to refund me if I send the bad cables back.

Does anyone know if this:
http://www.msi.com/product/mb/Z68MA-G45--B3-.html
can handle 4 gpus with or without shorting?

It has z68 chipsets and i want to use it with 4x 7950 cards. Does anyone have experience with z68 chipsets?
It is very cheap available for only 50€ thas around 65$ (including taxes)

tested
990fxa-gd80
990fxa-gd55
990fxa-gd70

all require shortening pin
after that work like a clock :)

I ran into the exact same issue and it took me some time to work it out. I had 2 GPU's working in a rig. I then put them on 16x risers and they still worked great. Then I tried them on 1x risers and, while the OS displayed on them (Windows), they were not recognized as 3D cards and didn't show in the device manager. After lots of trial-and-error, the answer was simple: once you've filled the new slots with your GPU's, re-install the ATI/AMD display drivers. All of the cards will be detected.

Yesterday I purchased 3 990fxa-gd80 v2 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813130649) we're talking about the same MB?

I'm planning setting up 6 gpu's on each.. do you think was a good choice?

Does this only work for the x1 slot or is it possible to use this technique for x16 slots too ? ( eg: if you have only x1 to x16 risers, insert an x1 to x16 riser into the mobo x16 slot - with the risers x1 pin and the riser's x16 into the GPU )

AFAIR it should work.

Tested with both x16 and x1 slots. It doesn't work for me on either of them: the PC won't boot up ( actually won't do anything ). When i remove the wire between A1 B17, shut down pc, then try again, it works. Haven't heard anyone having this problem. What should i do ?. I mean, my motherboard AsRocK H77PRO4-M Socket 1155 won't work even with this method.

However, i have to admit it works, without any wire, if i connect only 1 GPU, in any x1 or x16 slot. If i connect multiple GPUs, it doesn't work anymore. If i don't use risers, the PC works with multiple GPUs plugged in, so it's deffinitely because of the x1 slots/risers.

MSI 990FXA-GD65V2  (at least mine anyhow)

asrock z87 killer lga 1150
also use PCI-E 2.0 settings for 16x ports if using extension PCI-E 3.0 does not work with low quality affordable cables ))

Hey mate just wondering how you are going with the asrock z87 killer, what slots your shorting etc, how many cards you are using? got pics of the setup?

I just ordered this motherboard with 4x R9 280X GPUs and got a 7950 spare from my gaming rig so hoping to get 5 cards up and running in it.

Thanks mate

I was wondering if anybody try below 2 mobo,

GIGABYTE GA-990FXA-UD3 (rev.1)
asrock z68 extreme7 gen3

with ashrock i can only use 3 GPU (port 1,4,6). in the manual it says if anything plug in port 2, will disable all other port. In this case wich port i need to short to enable all port? all my card connected with power raiser.

port 2 and 5?

or port 1,3,4,5,6?

with gigabyte mobo , its took the 4 GPU first time, but didn't try with 2 pciex1 port yet. waiting on the x1 to x16 raiser. i found this mobo doesn't always turn on after a power cycle. anybody have any experience with these mobo?


thanks

Using Gigabyte Z68AP-D3 and can't get all of the 1x slots working.

It has the following ports
x16 x1 x1 x16 x1

both x16 slots work fine with with risers with no shorting required.
the far right x1 slot works with no shorting required.

the middle 2 1x slots I can not get to work at all, even if they are the only slots in use it will never detect the cards, even with shorting, anyone have any ideas?

Ideally I would like a 4x GPU rig using this mobo, so I just need one of the slots to work

hi guys
im using 4x7970 on z87a mobo with 3220 haswell
i want tot add 5th card but not detecting by windows
im using powered risers and x1 slots are ok  the second x16 slot not recocnizing gpu

so its best to avoid these motherboards right? I would think a list where they are NOT requiring a shortage would be even better.

all these seems old chipsets.

how about new chipsets? some also require pin short?

I'm running an Asus H81M Plus and it needs the 3 1x slot pins shorted to run 4 GPUs

ECS A780GM-A Version 1.1 is NOT on this list.

All 3 PCI-E slots work just fine without a jumper.

Hello,

Does anyone know if an Asrock 970 Extreme4 needs pin shorting? I'm struggling with using it with powered risers (1x to 16x).  ???

ASRock Fatal1ty Z87 Killer needs shorting.

Try older drivers.

Have you tried shorting the pins for the 1x slot card? It will more than likely need it done.

gigabyte 990xa-ud3

To get all 5 cards working, the middle x16 slot needs to be shorted. All other slots work without any shorting at all.

If you short out pin A1 and B17 on the x16 slot the motherboard will not power on. You MUST short out pin A1 and B81 - B81 is the second to last pin at the very end of the slot.

How about the MSI Z77-GD80? Supposed to be like the Z77A-GD65 but with thunderbolt!



Cant get more than three cards detected! Im using pcie x1 slot #3 and #6 and then x16 pcie in slot 2!



I was hoping to do 6 cards..

 

Hey. I'm planning on getting this board for my first mining rig, and was wondering if you could tell me how many cards you're using on the board?

I'm planning to make a rig with 7 cards, and the ASRock Z87 Killer (Fatal1ty) does have the slots, but I can't find any information regarding whether or not it supports having all slots active.

Thanks!

I got 5 up and running on it. Tried to do 6 but something with the dual PSU setup was screwing up the output. Either that or shorting the very top 1x bus confuses the motherboard as it expects to send video from the 16x main bus. You could maybe do 6 if you skipped that top 1x bus. I didn't fool around with it too long though as I figured I'm already maxing out a 1600w GPU with 5 cards. I got another 5 GPUs here that I'm gonna do the same with. One tip for this board, you have to set the timings for the PCI-E busses manually in the UEFI in this order: 2nd gen, 1st gen, 1st gen under chipset configuration. This is the configuration for 3-way Crossfire/SLI. I was pulling my hair out trying to figure this out because anytime I'd add more than 1 card to the thing it wouldn't give me any output, yet it claimed to be able to handle 3x Crossfire/SLI. A quick peek through the manual showed the correct bus speeds for the 3-way. Even though we aren't running the cards this way, you need to trick the board into thinking that you are. Having them set to auto doesn't work. Other than that this is a great board. I just bought another one to set up the rest of my GPUs with. Shorting the pins is easy if you use twisted pair from inside a CAT5.

For a first build 5x GPUs is plenty. I was like you and wanted to go all out, planned to run 6 off this system with dual PSUs, but over the past month of experimenting with hardware I've found that 5 GPU + 1600w PSU is the perfect setup. After 5 GPUs it starts to get unstable and finicky. Might as well just build another rig at that point.

Hope this helps. :)

Z87-G45

You can run 6 cards on this.

Leave slot 4 empty and short slot 7 and that should be all.

In terms of the BIOS, change the "PEG Gen" to "2" in Advanced> PCI.

See here ... http://www.overclock.net/t/1455347/help-losing-my-f-head-mining-rig-r9-290-x-7-on-win-8-1-but-not-a-single-working-one#post_21513603

and here ... https://bitcointalk.org/index.php?topic=398955

http://i.snag.gy/Lqrwp.jpg

^^ @Vyker

 Whoa .. i didnt realize you can short the 16x pcie slots..

The last 2 16x pcie slots on my board arent working with risers attached.. (msi z77a-gd80)

I read somewhere that i can only use then number 3 and 6 slots or the 1 and 4  slots at the same time for the 1x pcie slots so im using 3 & 6.

Im using the  3 and 6 with the check marks and ive tried shorting with no go for the others.

Is there something in bios i should look for! Whats PEG Gen" to "2"?

Does it apply to gd80? Can it get me past 3 cards. I would be ok running 5 at this point.

https://i.imgur.com/pW2gZ4x.jpg

You likely need to set them to Gen1 bus speed. Leave the top 16x at Gen2 and set bottom 2 to Gen1. This is how your motherboard would be configured for a 3x Crossfire/SLI setup and it is the configuration it needs to be able to detect all the cards and power them properly. You aren't using much bandwidth on the bus when mining so it is fine to set them to lower speed. This is the same reason we can get away with plugging cards into the x1 slots. I highly doubt you need to short them.

^^ ok i will give that a shot. Ill report back if i find that it works.

Hmm.. went to advanced and all it shows is pcie GEN3    Auto or disabled is the choice? .. Cant really specify which card its just one choice i guess for all?


https://i.imgur.com/nVZVncL.jpg


 EDIT : DISABLED IT.. The 4th card didnt get detected  ..

sorry so late ) I have 3 rigs with 7 5 and 5 r9 290 cards attached

will post photos if you still need `em - post questions it`s awesome MB imho

I have 7 cards setup - works ok, but requires a monitor to boot. 5 cards setup on same MB - does not require monitor connected - not sure what this problem connected to (

How are you running the 5 r9 290s? I have 4 of them and have nothing but trouble... They are totally unstable. I'm about to RMA them for r9 280x's which I know run great.

i run them stable at 820 mhash each 24/7, what you mean trouble?

Do you use default BIOS settings? Any jumpers on PCI-E? How many Kh/s do you get per card?

yeah would be nice to know ...
i got two different opinions ... some say "yes" some say "no"

a question all around ....
when i use a dumy plug i don't have to short the port or are this two different things ?!

which wire-type is the best .. any suggestions? any cheap source to get one?
broken usb cable perhaps?! or anything else?

This info was like gold for one of my boards! This guy on another forum went out of his way to show me how he did it so i will return the favor!

Here is the cable im using! Its sitting on the manual for my gd80.. You notice how there are some strands I have pointing downwards and the rest is pointing straight ahead!

First off the cable is from an old power supply! Just clipped of the molex connectors and stripped a quarter of an inch or so of plastic to show the bare wire.

Then i pulled 8 strands or so and pointed them downwards! The rest that were pointing straight i cut off!!

The total length should be about 3inches or so.. I then cut off the other side and stripped and pulled 8 strands and twisted while the rest i cut!


https://i.imgur.com/zom16Np.jpg



Here is the resulting cable!
https://i.imgur.com/GrBcIJe.jpg


Then ends are the 8 strands of wire twisted! That will fit in the pcie hole so you can short it!



Here is a nice photo i found online showing which holes on the pcie slot to put the ends in!

The picture next to it shows the 1x pcie cable inserted while the shorting cable is there!

https://i.imgur.com/dp6Pb9h.jpg

https://i.imgur.com/DsG63jI.png

I hope that helps you on your quest! Be careful not to insert in the wrong pcie hole! Do it while power supply is off!
Double check everything and then power it on. See how on my finished cable there is a bunch of hanging wire on one of the ends .. besides the twisted thread!   Dont do that! Make sure you cut off all the cable you are not using on the ends. Dont wanna short something you had no intention of shorting! I went back and fixed mine!




Zedicus

almost default - usung PEG2 for pci-ex 16x with 16x extensions
any jumpers - you mean PCI-ex shortening A1 B17 pins - yes.
How many Kh/s - 820 each

Hi,

thanks a lot
i will give it a try
i got some little wires out of an old usb cable which is broken ...
on the first look they look the same from the "thickness" when they are twisted together. i wil report :-)

^^ Good Luck! I got frustrated with my gd80 and bought another board. I got the G45 today. Gonna use the gd80 to do some gaming.. or something.

possible to not short the pins and instead use the usb3 powered risers?

i have a problem with my z87 killer....
i have 3 cards connected in the 1x slots...
but this is what the bios see
https://dl.dropboxusercontent.com/u/30396291/rps20140112_135632_580.jpg

the cards are connected in the slot : 3,4,6
but only the card on 4 is detected
if i let windows start i get the msg "all device are disabled, cannot mine" and windows see only the gpu from the mobo
if i disconnect 2 gpu (random positions) and start it works ...


any help?

turn on peg2 instead of peg3 for all pciex16 slots.
additional GPU molex connected?

Hey man..

Try running 3 & 6! Alone!!

leave slot 4 disconnected! On my msi board i can only run 1 & 4 at the same time or 3 & 6 at the same time!

Its maybe cause you have the #4 slot occupied and its looking for a device in the #1 pcie slot and ignoring 3 & 6!

Set your 16x pci-e busses to gen2, gen1, gen1 in that order. Then your mobo will detect any cards plugged into the 16x busses. From there, you will need to short the 1x busses to get detection. I'm currently running 5 cards on this board no problem. Very stable. In fact, it worked so well that I've cloned it and made another.

Ok I can confirm that Gigabyte motherboard Z68AP-D3 rev 2.0 can detect 4 Gigabyte 280X cards. On PCIEX1_3 used A1B17 on other slots not needed, but unable to use PCIEX 1_2 no matter what I have tried, with or without A1B17. So I used PCIEX16, PCIEX1_1, PCIEX1_3(A1B17) and PCIEX4.

So basically when you short all your 1x Slots and setup THe Gen2, gen 1, gen 1.. You can have all 7 PCIE slot GPUs running???

Any help in getting 4 cards working on a AsRock 990FX Extreme3

Can get even the primary slot working with 1 Saphire 7950 Dual-x with 1 x riser, 16 x riser both power and non powered.

Bump on my query? ^^ Please Guys after reading some comments it seems that this is good to go with all Gpus ^^^ Check please cause i want to buy it

ANyone?

By this comment from a user in this thread which  states    "Set your 16x pci-e busses to gen2, gen1, gen1 in that order. Then your mobo will detect any cards plugged into the 16x busses. From there, you will need to short the 1x busses to get detection. I'm currently running 5 cards on this board no problem. Very stable. In fact, it worked so well that I've cloned it and made another."


Now by reading this comment above, does this mean that all 7 will work irogether?

Sorry for the Bump again I just need to no really Urgently

The manuel states  slots PCI, so Far I have connected 4 cards, And Tried Combinantion of difffernet slots all connected and deteced..

All PCI x1 slots need to be presence_shorted and the pCIe 16x need to be setup in bios in somehow Gen 1,2,3 or auto. I heard setup Gen 2, gen 1, gen 1 - in this sequence and they should work, but i have not 7 cards to try yet still

Someone has tried 5 cards and works great stable and all, But The mystery Question 7 x GPU??? Comeon somone must b able t otry it.. Or it looks likek I am going to be the first to do the mision lol

the manual states this -

PCIE1 = (2.0) x 1 slot)- Is used for PCI express x1 lane width GPU
PCIE2 = (3.0) x 16 slot- Is used for PCI express x16 lane width GPU
PCIE3 = (2.0 x 1 slot)-Is used for PCI express x1 lane width GPU
PCIE4 = (2.0) x 1 slot)- Is used for PCI express x1 lane width GPU
PCIE5 = (3.0) x 16 slot -Is used for PCI express x8 lane width GPU
PCIE6 = (2.0) x 1 slot)-Is used for PCI express x1 lane width GPU
PCIE7 = (3.0) x 16 slot- Is used for PCI express x4 lane width GPU

5 cards on Asrock 970 Extreme4:

If 4 cards get detected fine but the 5th (in the middle x16 slot, using a powered x1 riser cable) won't, short A1=>B17 on the x16 slot. Voila, suddenly the card pops up under 7, 8 and Linux - hardware error 43 in 7 device manager but who cares, use 8 or Linux instead.

Hi Guys

I see you all talking about the Z87 Killer

i Have the Z87 EXTREME4, but i have the same issue, after i have put 3 cards in the 4th one will not be detected at all :(

i have tried the  2, 1, 1 setting for PCIE 16 slots , still wont work.

my board is set up like this , i am doing 2 direct connection and 2 USB raiser

for raiser cables i am using USB ones like this  http://www.ebay.com.au/itm/251427594175?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649   

so i wont need jumper if i am correct?

1 PCIE x1      USB raiser
2 PCIE x16     Directly pluged in
3 PCIE x1

4 PCIE x16
5 PCI
6 PCIE x16      Directly plunged in
7 PCI               


i put the 4th card (on usb raiser) in slot 4 or slot 1 it just wont work :(


can anyone help?

thank you

Hi all,
I tried the pin short on two 1x slots of a Asus A8N-E with no luck.  The computer doesn't boot or even give me the first beep... no video signal.   The fans, keyboard and mouse get power, but no joy.  Is there a certain BIOS I need with this MB for the pin short to work?  I can't get more than one card workin in this old box :(

Any help would be appreciated!

I currently have 5x plugged in on risers on 2 identical rigs. Going to expand this to 7x when I get a chance. Sometimes the presence pin shorts are shotty and you just gotta redo it, or you got bad risers. Could be a whole host of stuff.

Did you find your answer? At the moment I am running the z87 killer with 1 card in a 16x pci slot and 4 other cards on 1x to 16x powered risers all in 1x slots(had to short all of them) . Looking to add a sixth card but whenever I put a card in the 16x slot with a 1x to 16x powered riser it wont see it(is it possible I need to short the 16x slot?) I tried gen 2 gen 1 gen 1, no success . thinking of buying 16x risers to fix this issue

Okay, I've been able to successfully get BAMT up with 6 cards on the Fatal1ty Killer mobo. As soon as I add the 7th, Xorg won't start and it crashes on boot. Just letting you guys know. Stick to 6 or less with this board.

I've found a super easy way to short the 1x presence pins. Take a 68 ohm resister (same thing you use to make dummy plugs) and use that to short the 2 slots in the bus. No more trying to cut down wires. No more bending before they fully insert. It works instantly. Hope I save someone here countless hours.

I'd just like to say that my BOXER61 (Acer eMachines mobo) required this on the x1 slot.

i got my 5-GPU-Rig running last night (Without shorting)
i had to put one GPU direct in the PCIe16 Slot (the other 4 work with x1-x16 Risers)

Does the 5th card work, when i put it in a x16-x16 riser for this slot or has it to be on the mainboard directly?

MB: ASRock 970 Ex4

what about ud3???
does it require this method too??

Hey Guys, i have Gigabyte GA-Z87X-D3H  does it need shorting in order to run 4 GPUS? because right now i cant get my pc to recognize PCI-E 1


http://www.gigabyte.com/products/product-page.aspx?pid=4518#ov

This is my same problem bros, shorting the first x16 wont work as well :/

Tested on Albatron PXP35 Rev 2.0 works on first PCI-E x1 with shorting. Second PCI-E x1 does not work.

Going to try a few other motherboards this week.

just want to confirm that the Asus Striker II formula requires pins shorting on both x1 slots and x16 slots when using x1-x16 risers.


Side note: Those Asrock H61 and H81 BTC motherboards are great, I have one of each and they both run 6 x 7970's no problem, no messing with settings or pins, everything on default and everything just works as it should, and they are cheap too.

http://www.amazon.co.uk/ASRock-H61-BTC-Motherboard-Capacitor/dp/B00HDP6TPA (http://www.amazon.co.uk/ASRock-H61-BTC-Motherboard-Capacitor/dp/B00HDP6TPA)

Edit: forgot to mention, I find i can run the same cards about 3.5% faster in the Asrock BTC boards compared to the asus board, i dont know why because the asus board is a good board too designed for overclocking. Basically the asrock boards pay for themselves fairly quick.

Micax1, on the ASRock Z87 Killer (Fatal1ty), did you have to short any of the pins in the PCI-e slots to get all 7 GPUs to work/be recognized?

I'm running 2x rigs with 6x GPUs per on this same board. Works fine, but i can't get the 7th working or I get video errors when the Xorg tries to start. Possible driver issue (R9 290s and R9 280Xs)? Other than that the board is a champ, but yet it requires shorting of anything other than a 16x->16x riser, so that means USB risers require shorting in all ports. I'd avoid the first 1x as it seems to be the most problematic.

whats a good way to short these cables? I tried cutting a molex->pcie cable but the small wires are very hard to fit into the holes

Use the same resistors you would use for making a dummy plug. They are a perfect firm fit to stick far down in the hole. Get your mind out of the gutter. Available at radioshack.

Good info nvandertill, I've still got a couple questions to make sure I understand what you've done to the board.

I've got 3 cards plugged directly into the 16x slots (without touching the bios). If I want to install cards in the 1x slots using risers do I need to ground each 1x slot? When grounding using 68 Ohm resistors you just need to plug the resistor into B17 only (not A1 or any other ground), right?

I think I know the answers, just want to make sure.

Thanks in advance

So here is what I got working on the ASRock Z87 Killer

BIOS
PCI-E 1 (gen2)
PCI-E 2 (gen1)
PCI-E 3 (gen1)

PHYSICAL
PCI-E 1 (x1)   --> EMPTY
PCI-E 2 (x16) --> 750 TI (no riser)
PCI-E 3 (x1)   --> EMPTY (Blocked by PCI-e 2)
PCI-E 4 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 5 (x16) --> 750 TI (16x riser)
PCI-E 6 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 7 (x16) --> 750 TI (16x riser)

I have not been able to get PCI-E 2 (x16) to be recognized on a riser at all, either 1x or 16x
I have not been able to get PCI-E 5 or PCI-E 7 to be recognized with 1x risers.

I would love to get the 6th card up and running on this board.

Ideas?

Update:

PHYSICAL
PCI-E 1 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 2 (x16) --> 750 TI (16x riser)
PCI-E 3 (x1)   --> EMPTY (shorted)
PCI-E 4 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 5 (x16) --> 750 TI (16x riser)
PCI-E 6 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 7 (x16) --> 750 TI (16x riser)

It's been mining all night.  Not sure if I want to try PCI-E 3... that sort of "what if it don't work after i make a change" mentality.

http://www.neochron.net/mining/six-miners_832x624.jpg

CyberCrist, I was able to get 6 EVGA 750Ti FTW cards running on the ASRock Z87 Killer.

BIOS
PCI-E 1 (gen2)
PCI-E 2 (gen1)
PCI-E 3 (gen1)
Also disabled integrated graphics and changed PEG0 De-emphasis Control to -6dB

PHYSICAL
PCI-E 1 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 2 (x16) --> 750 TI (1x riser, shorted)
PCI-E 3 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 4 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 5 (x16) --> 750 TI (1x USB riser, shorted)
PCI-E 6 (x1)   --> 750 TI (1x riser, shorted)
PCI-E 7 (x16) --> EMPTY

It's messy at the moment and I have to clean up now that it's working but here are pics for proof.  It's funny, we're very close in the equipment we used :)  I tried using a bootable Linux USB stick but had issues so I'm using an old hard drive.  I have an EVGA 750W PSU but it's only pulling about 460W from the wall.  These cards run very cool.  I don't have a 7th card to try and I likely won't.  For some reason I couldn't get a ribbon riser (also shorted) to work in the PCI-E 5 (x16) slot and when I tried a USB riser, it worked.  I have a monitor plugged into the PCI-E 2 (x16) slot.  Just like you I don't want to mess with it now that it works.

I am upset that I can't overclock these cards in Linux.  There's so much more potential.  What speeds are you getting with all 6?  I am getting about 1550 KH/s mining Litecoin with CudaMiner.

https://i.imgur.com/oHLnuXc.jpg

https://i.imgur.com/G9wdOC5.jpg

Pretty funny how close our setup's are.

With all 6 I'm averaging about 1522 khash/s, with a 99.78% acceptance rate.  Not bad at all.  Kill-o-watt say 468W which is pretty dang good.  This setup is to replace a machine that is running two R9 280x's.  They pull ~650W and get about 1430 khash/s, but heat up the damn garage way too much.

http://www.neochron.net/mining/screenshot.jpg

Well, just tried #7.  System booted and recognized the card, but when trying to mine, it would just shut down after about 2-3 minutes.  :(

Too bad the 7th card didn't work. I want to switch to Windows so I can overclock these and essentially get a 7th card's worth of hashing.

Hey guys, I have an old motherboard (5 years) that has 3 pci x1 slots but I can't get my riser to work. My riser has an extra molex connector, so would I still need to add the jumper wire? And if I do add the jumper correctly, is there any risk that I should be aware of?
Just out of curiosity, why is the jumper wire even needed?

EDIT: Holy crap I can't believe this worked on a 5 year old motherboard (and didn't blow up in my face). Thanks!
I didn't have any spare wires around so I took off some from my (also very old) phone charger. It still works as you as you reconnect the cables back.

i think Foxconn is bad one to use