Motherboard of choice for 6 or more GPU's

[Basil]

Hey there

i just bought  msi 990fxa-gd65  and 5x 7950 asus so i wonder to ask does msi 990fxa-gd65  will support 5x 7950?

btw ill run em on 1600psu so its enough for 5x gpu?


thanks

my experience suggests that better  2 PSU x 850 w (or 1000 w) much better than 1 x 1600, because:

1)  2 quality PSU x 850 w (or 1000 w) cost 25-30% are smaller than 1 quality 1600,

2) preferably in the settings of cgminer to set gpu-fun auto (when you run load on the power supply will be softer than if gpu-fun 80),

3) Be sure to read how to do simultaneous launch of two power units with the power key (it's very simple, you need to find the right two wires and link blocks).

4) when selecting a power supply must pay attention to the next thing!!!: in the power supply have to be auto-stabilizer (auto-correction) input voltage:
   eg 90-265 v much better than 220-240 v.

last point is often overlooked, but .... I spent two weeks searching for the causes of system instability until set external stabilizer. And all because of the fact that my power supply is not self-stabilization.

[CartmanSPC]

Hey there

i just bought  msi 990fxa-gd65  and 5x 7950 asus so i wonder to ask does msi 990fxa-gd65  will support 5x 7950?

btw ill run em on 1600psu so its enough for 5x gpu?


thanks

3x7950 running smoothly on 850w PSU here. 1600w should be ok for 5

Just an FYI...my (6) 7970 GPU rig uses 1776w (at most) but they are under volted.

[Burninj]

All my 6 cards rigs uses less than 1500w... 7970 and 7950 here

[fran2k]

Im' actually trying to run 7 cards on a MSI Z87-G45 GAMING with a Pentium g3220. So far I can't get more than 5 gpus to mine together under win 8, and I cant try linux because of shitty ethernet controller... Any idea about the 5 cards limit?

Just install the correct ethernet driver.

[iqacid]

Hey there

i just bought  msi 990fxa-gd65  and 5x 7950 asus so i wonder to ask does msi 990fxa-gd65  will support 5x 7950?

btw ill run em on 1600psu so its enough for 5x gpu?


thanks

my experience suggests that better  2 PSU x 850 w (or 1000 w) much better than 1 x 1600, because:

1)  2 quality PSU x 850 w (or 1000 w) cost 25-30% are smaller than 1 quality 1600,

2) preferably in the settings of cgminer to set gpu-fun auto (when you run load on the power supply will be softer than if gpu-fun 80),

3) Be sure to read how to do simultaneous launch of two power units with the power key (it's very simple, you need to find the right two wires and link blocks).

4) when selecting a power supply must pay attention to the next thing!!!: in the power supply have to be auto-stabilizer (auto-correction) input voltage:
   eg 90-265 v much better than 220-240 v.

last point is often overlooked, but .... I spent two weeks searching for the causes of system instability until set external stabilizer. And all because of the fact that my power supply is not self-stabilization.

thanks for your advice but one more question :> i just have 5X none powered riser so does my MB will handdle that volltage from all of my Gpu?

[nixifo]

Hello,
I am going for a rig with 7 gpus.
I know that MSI Z77A-GD65 can see 7 gpus with an Ivy Bridge cpu but I cannot find it .
Is the MSI Z77A-GD65 GAMING able to handle 7 gpus with an Ivy Bridge cpu?
What about the MSI Z87 - GD65 Gaming?
Thanks!

[Burninj]

I tried 7 7970 with z87 g55, got 7 gpu with no error in hardware manager, but when I loaded up trixx the gpu had 0mhz core and 0mhz memory... So I couldn't get it hashing.
I Tried this setup using lbr amd modified drivers.

[nixifo]

I tried 7 7970 with z87 g55, got 7 gpu with no error in hardware manager, but when I loaded up trixx the gpu had 0mhz core and 0mhz memory... So I couldn't get it hashing.
I Tried this setup using lbr amd modified drivers.

Have you enabled the Graphics Overdrive in the AMD CCC?
I have to deal with all three> AMD CCC, Trixx and MSI Afterburner for 3 5850 to setup as I wish...

[Burninj]

I tried 7 7970 with z87 g55, got 7 gpu with no error in hardware manager, but when I loaded up trixx the gpu had 0mhz core and 0mhz memory... So I couldn't get it hashing.
I Tried this setup using lbr amd modified drivers.

Have you enabled the Graphics Overdrive in the AMD CCC?
I have to deal with all three> AMD CCC, Trixx and MSI Afterburner for 3 5850 to setup as I wish...

I think my limit here is hardware related. The mobo can't get the seven pice ports populated, if it has same limitation as z77...

[Basil]

Hey there

i just bought  msi 990fxa-gd65  and 5x 7950 asus so i wonder to ask does msi 990fxa-gd65  will support 5x 7950?

btw ill run em on 1600psu so its enough for 5x gpu?


thanks

my experience suggests that better  2 PSU x 850 w (or 1000 w) much better than 1 x 1600, because:

1)  2 quality PSU x 850 w (or 1000 w) cost 25-30% are smaller than 1 quality 1600,

2) preferably in the settings of cgminer to set gpu-fun auto (when you run load on the power supply will be softer than if gpu-fun 80),

3) Be sure to read how to do simultaneous launch of two power units with the power key (it's very simple, you need to find the right two wires and link blocks).

4) when selecting a power supply must pay attention to the next thing!!!: in the power supply have to be auto-stabilizer (auto-correction) input voltage:
   eg 90-265 v much better than 220-240 v.

last point is often overlooked, but .... I spent two weeks searching for the causes of system instability until set external stabilizer. And all because of the fact that my power supply is not self-stabilization.

thanks for your advice but one more question :> i just have 5X none powered riser so does my MB will handdle that volltage from all of my Gpu?

I can not say for sure, because the best friend, it's an experiment

I use 4 GPU on MB and 2 of them through the usual none powered 16x raiser and no problems.

[mangodream]

So, are you saying that we can use an MSI Z77A G45 with, for example, 6x R9 280X with latest drivers without presence pin ?

[llamabucket]

Hey guys,

I'm contemplating this board for my 5x 280x rig: http://www.newegg.ca/Product/Product.aspx?Item=N82E16813130727

MSI Z87-G55

Has anyone successfully gotten 5+ cards to run on this board yet? Perhaps 280x cards? If yes, what slots did you populate?
I ask because an older rig of mine runs on the Z77-GD65 and needed presence pins in ALL three 16x slots for six GPUs to run properly.

Thank you in advance

[crazyates]

Hey guys,

I'm contemplating this board for my 5x 280x rig: http://www.newegg.ca/Product/Product.aspx?Item=N82E16813130727

MSI Z87-G55

Has anyone successfully gotten 5+ cards to run on this board yet? Perhaps 280x cards? If yes, what slots did you populate?
I ask because an older rig of mine runs on the Z77-GD65 and needed presence pins in ALL three 16x slots for six GPUs to run properly.

Thank you in advance

If you're only going to be using 5 GPUs, get the 970A-D3P. It's much cheaper than the one you linked, and I can confirm it runs 5x 280x or 5x 290 just fine.

[Burninj]

Hey guys,

I'm contemplating this board for my 5x 280x rig: http://www.newegg.ca/Product/Product.aspx?Item=N82E16813130727

MSI Z87-G55

Has anyone successfully gotten 5+ cards to run on this board yet? Perhaps 280x cards? If yes, what slots did you populate?
I ask because an older rig of mine runs on the Z77-GD65 and needed presence pins in ALL three 16x slots for six GPUs to run properly.

Thank you in advance

I'm running a 6 79xx cards on a z87 g55, no presence pins, but usb risers...

[jerzees]

https://i.imgur.com/T4np4RL.png?1

Why is GPU4 at I=13? Because of stability problems?

[Burninj]

Why is GPU4 at I=13? Because of stability problems?

Running 7 gpu 5xxx and 6xxx is not an issue, I'd like to see a 7 x 79xx on these mobo

[CaptainBeck]

blah blah, picture with 7 video cards

Can you show me your device manager and cgminer screenshot to show all 7 gpu mining please

Done.


Please answer:

Not sure why "powered risers" and "hashrate" are in the same sentence in so many posts. Show me proof that powered risers remotely affect hashrate. I have 53 individual GPU cores all mining and not a SINGLE riser is powered. 666.2 MHash off a single 7970 at 1110/170 (Undervolted, can do 732.2 mhash at 1220 core stock volts), 408.3 mhash off a single 5870 at 880/176 (undervolted), single 5970 core @ 800/160 pushing 371.1 mhash (also undervolted), and so on.

How many cards are in the system, what OS, and catalyst drivers are you using? I've found that with Windows machines every card I add drops the hashrate of the other cards. Example. I have two 7970s in my desktop set at 1094mv, 1080e, 170m and they get 645mh each. One of my rigs has four 7970s and at the exact same settings those cards get 612mh each. I've had this issue since using 11.12, 12.6, 12.8, 13.1, and 13.3.

What 6870s are you running to get 400kh from??

[spinx]

I can anyone give me advice on a nice 5 or 6 slot AM3 mobo? No mods requeird.
I got the ASRock 970FX EXTREME4 but its driving me crazy never get more than 3 cards working, got x1-x16 powerd risers.

[GeekMan]

I can anyone give me advice on a nice 5 or 6 slot AM3 mobo? No mods requeird.
I got the ASRock 970FX EXTREME4 but its driving me crazy never get more than 3 cards working, got x1-x16 powerd risers.

The 990fxa-UD7.

[Velocd]

Hey guys,

I'm contemplating this board for my 5x 280x rig: http://www.newegg.ca/Product/Product.aspx?Item=N82E16813130727

MSI Z87-G55

Has anyone successfully gotten 5+ cards to run on this board yet? Perhaps 280x cards? If yes, what slots did you populate?
I ask because an older rig of mine runs on the Z77-GD65 and needed presence pins in ALL three 16x slots for six GPUs to run properly.

Thank you in advance

If you're only going to be using 5 GPUs, get the 970A-D3P. It's much cheaper than the one you linked, and I can confirm it runs 5x 280x or 5x 290 just fine.

Did this board need presence pin shorts for any of the slots?