Bitcoin Forum
June 15, 2024, 06:52:44 PM *
News: Voting for pizza day contest
 
   Home   Help Search Login Register More  
Pages: [1]
  Print  
Author Topic: 4x 280x GPU motherboard question  (Read 2537 times)
mrugala (OP)
Member
**
Offline Offline

Activity: 84
Merit: 10


View Profile
January 11, 2014, 12:07:12 PM
 #1

Hello, anyone knows which motherboard can support 4x GPU and does not need shortening the pins, nor using 16x16 risers, but 16x1? And system would detect them all without any issues?



Asus Maximus IV Extreme (has 12v GPU power on MB)
Sandybridge i7 processor
16GB Ram
Watercooled CPU

All of that is overkill, but I just pulled it from my desktop so meh...

Of interesting note, I had to use 16x to 16x risers on 2 of the slots or Windows wouldn't recognize the cards, I don't know why, but it is what it is.  1x to 16x risers on the other 3.


foodies123
Sr. Member
****
Offline Offline

Activity: 322
Merit: 250


View Profile
January 11, 2014, 12:23:58 PM
 #2

the fxa-ud5 or even ud3 from gb would take it but that proc is a no-go

nope
atp1916
Legendary
*
Offline Offline

Activity: 854
Merit: 1000



View Profile
January 11, 2014, 12:39:58 PM
 #3

mrugala, some personal favorites:
AMD (AM3/3+) -Asrock 970 Extreme4
AMD (FM2) -> Asrock FM2A85 Extreme6+
Intel -> MSI Z77A-G45

Note that there are lots of intel options in the Z77, Z87 range due to Intel fully embracing PCIE 3.0.
tysat
Legendary
*
Offline Offline

Activity: 966
Merit: 1004


Keep it real


View Profile
January 11, 2014, 03:15:23 PM
 #4

AMD (AM3/3+) -Asrock 970 Extreme4

Any idea if you'll need powered risers or not for that one?  I can't remember when you do and do not need them, been way too long since I've GPU mined.

Thanks
atp1916
Legendary
*
Offline Offline

Activity: 854
Merit: 1000



View Profile
January 11, 2014, 04:50:11 PM
 #5

AMD (AM3/3+) -Asrock 970 Extreme4

Any idea if you'll need powered risers or not for that one?  I can't remember when you do and do not need them, been way too long since I've GPU mined.

Thanks

I am running 5 Sapphire 7950 reference blower model cards like this one in that board: 3 Sapphire 7950 blower model reference cards inserted into the x16 slots, and 2 up on powered risers.  No issues.

You need powered risers when your pcie pins are overspecced past a reasonable amount due to the absence of the expected 75w from the physical pcie lane.  If you have say 4 290s up on unpowered risers, that would be 75w x 4 = 300w extra being pulled through the pcie pins.  You are virtually guaranteed to blow something up.
tysat
Legendary
*
Offline Offline

Activity: 966
Merit: 1004


Keep it real


View Profile
January 11, 2014, 04:54:46 PM
 #6

More than one 6 pin for powered risers makes sense... when I had a 5x 5830 (I think that was the card) I had some issues because the risers weren't powered.  1500w PSU should be enough to support 4x 280X, right?
atp1916
Legendary
*
Offline Offline

Activity: 854
Merit: 1000



View Profile
January 11, 2014, 04:57:35 PM
 #7

1500w would definitely be plenty for 4 280x.  Each 280x won't exceed 300w in a worst case scenario.
mrugala (OP)
Member
**
Offline Offline

Activity: 84
Merit: 10


View Profile
January 11, 2014, 05:04:17 PM
 #8

1500w would definitely be plenty for a 280x.  Each 280x won't exceed 300w in a worst case scenario.




Based on my rig readings with a 90% efficent PSU.

4x 280x @ 1080/1500 1125mv = 1190W from the wall. 750-755khs per card.
4x 280x @ 1030/1500 1075mv = 1050W from the wall. 715-720khs per card.
4x 280x @ 1000/1500 1037mv= 970W from  the wall. 695-705khs per card.

I assume he runs 800khs per card @ around 1160/1800 1120-1125mv. This should pull approximately 1550-1650w from the wall.
atp1916
Legendary
*
Offline Offline

Activity: 854
Merit: 1000



View Profile
January 11, 2014, 05:09:45 PM
 #9

1500w would definitely be plenty for a 280x.  Each 280x won't exceed 300w in a worst case scenario.




Based on my rig readings with a 90% efficent PSU.

4x 280x @ 1080/1500 1125mv = 1190W from the wall. 750-755khs per card.
4x 280x @ 1030/1500 1075mv = 1050W from the wall. 715-720khs per card.
4x 280x @ 1000/1500 1037mv= 970W from  the wall. 695-705khs per card.

I assume he runs 800khs per card @ around 1160/1800 1120-1125mv. This should pull approximately 1550-1650w from the wall.


1160/1800 exceeds a worst-case scenario.  One doesn't need near those clocks to get ~750khs on a 280x.  

Running 1160/1800 to get the extra 50khs to 800khs = I don't care about performance / watt and probably don't pay much if anything for electricity.
crazyates
Legendary
*
Offline Offline

Activity: 952
Merit: 1000



View Profile
January 11, 2014, 05:12:00 PM
 #10

5x 280x on a Gigabyte GA-970A-D3P ($90 @ Newegg). 2x Rosewill Capstone 750W PSUs. Undervolted the GPUs to 1.019V, and getting 3.5Mh/s @ 1250W.

Here's a similar rig, but with 290s. https://bitcointalk.org/index.php?topic=7216.msg4380855#msg4380855

Tips? 1crazy8pMqgwJ7tX7ZPZmyPwFbc6xZKM9
Previous Trade History - Sale Thread
therealbigcoin
Sr. Member
****
Offline Offline

Activity: 729
Merit: 251


View Profile
January 11, 2014, 05:17:05 PM
 #11

I think im ordering one of these Asrock FM2A85 Extreme6+ to begin my mining rig (begin just with 1 r9 290 card)
and upgrade later.
Can you guys pls tell me, are the components fit together?

http://imgur.com/WSZjQj1

this is my first experiment with mining, i dont look for profit but  i hope to get my investment back one day Wink

Greetings
kalus
Sr. Member
****
Offline Offline

Activity: 420
Merit: 263

let's make a deal.


View Profile
January 12, 2014, 01:43:06 AM
 #12

http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov

4 pci-e 16 in an Extended ATX motherboard. 

lots of fan headers aux power to the motherboard.  this is great with 4 cards.

DC2ngEGbd1ZUKyj8aSzrP1W5TXs5WmPuiR wow need noms
crazyates
Legendary
*
Offline Offline

Activity: 952
Merit: 1000



View Profile
January 12, 2014, 06:15:44 AM
 #13

http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov

4 pci-e 16 in an Extended ATX motherboard. 

lots of fan headers aux power to the motherboard.  this is great with 4 cards.
Seriously? The one I linked is $100 cheaper. Why would you spend more money, buy this one, when they're both going to do the exact same thing?

Tips? 1crazy8pMqgwJ7tX7ZPZmyPwFbc6xZKM9
Previous Trade History - Sale Thread
Will2117
Newbie
*
Offline Offline

Activity: 10
Merit: 0


View Profile
January 25, 2014, 03:21:26 AM
 #14

5x 280x on a Gigabyte GA-970A-D3P ($90 @ Newegg). 2x Rosewill Capstone 750W PSUs. Undervolted the GPUs to 1.019V, and getting 3.5Mh/s @ 1250W.

Here's a similar rig, but with 290s. https://bitcointalk.org/index.php?topic=7216.msg4380855#msg4380855

Thanks for the mobo info. I just RMA'd my asRock 970 ex4 because I couldn't configure 4 or more 280x's on them.

Can you tell me what CPU, and RAM you are running?
Silvano
Member
**
Offline Offline

Activity: 98
Merit: 10


View Profile
January 25, 2014, 04:06:57 AM
 #15

I'm building this rig:

MOBO gigabyte GA-970A-DS3P
CPU AMD Sempron 145 boxed
RAM 8gb DDR3 1333Mhz CL9 Geil
PSU 3x Fractal Design Integra R2 750w 80+ bronze
2x add2psu adapter
3x 1x to 16x PCI-E riser Powered
2x 16x to 16x PCI-E riser Powered
2x Aerocool external fan 120mm
1x Pendrive 8gb
5x Sapphire R9 280x Dual X cod. 11221-00-20g

Rig will work on BAMT 1.2 distro, controlled by my desktop via VNC

@crazyates: do you think that my experiment with 3 PSU (2 for 2 vga each, and 1 for 1 vga and mobo) should be good?
i have only a question about it, can the risers be powered by all the PSU or i must use only 1 psu for 5?

EAC: eStpUnXdAACnB8mntosy1H3yiumrFwUdYU  DOGE: DQvMVeWDzetrbcYU7FFrg9Q9KEcDTeQLm2
LOT: M5qBdb43nj53Jjjf8Ci95dgQzoUriQiKDv     MOON: 2UNbhV3RUdFNRiK6wWop6gPawM9xGbbaEn
crazyates
Legendary
*
Offline Offline

Activity: 952
Merit: 1000



View Profile
January 25, 2014, 04:19:37 AM
 #16

Can you tell me what CPU, and RAM you are running?
I used a Sempron 145 and a cheap 8GB stick on each rig.

@crazyates: do you think that my experiment with 3 PSU (2 for 2 vga each, and 1 for 1 vga and mobo) should be good?
i have only a question about it, can the risers be powered by all the PSU or i must use only 1 psu for 5?
I'm using 3 PSUs on my 290 rig, but a 5x 280 rig may be doable on only 2x 750W PSUs.

Either way, I don't think it matters which PSU powers the card, and which powers the risers. I typically put 4 risers on whatever PSU has the least load, and then the 5th riser on the other PSU. I basically do this because our risers take SATA plugs, and our PSU only has 4 SATA plugs per cable. Tongue

TL:DR Your GPU doesn't have to have it's PCIe plugs and it's riser powered by the same PSU.

Tips? 1crazy8pMqgwJ7tX7ZPZmyPwFbc6xZKM9
Previous Trade History - Sale Thread
Will2117
Newbie
*
Offline Offline

Activity: 10
Merit: 0


View Profile
January 25, 2014, 10:45:04 PM
 #17

5x 280x on a Gigabyte GA-970A-D3P ($90 @ Newegg). 2x Rosewill Capstone 750W PSUs. Undervolted the GPUs to 1.019V, and getting 3.5Mh/s @ 1250W.

Here's a similar rig, but with 290s. https://bitcointalk.org/index.php?topic=7216.msg4380855#msg4380855

Hi, thanks for the info. Did this Mobo also require a power switch? The asrocks had them integrated on the mobo.
twistedtrick
Full Member
***
Offline Offline

Activity: 154
Merit: 100


View Profile
February 01, 2014, 01:29:57 AM
 #18

Regarding the 970ex4 mobo, I have some problems running 4x R9 280x on it as well. Not sure what the heck is causing the issue, but I'm about one more frustrating moment away from smashing this pile of crap with a hammer and buying a different board (or scaling back to 2 GPU rigs).
crazyates
Legendary
*
Offline Offline

Activity: 952
Merit: 1000



View Profile
February 01, 2014, 03:12:23 AM
 #19

5x 280x on a Gigabyte GA-970A-D3P ($90 @ Newegg). 2x Rosewill Capstone 750W PSUs. Undervolted the GPUs to 1.019V, and getting 3.5Mh/s @ 1250W.

Here's a similar rig, but with 290s. https://bitcointalk.org/index.php?topic=7216.msg4380855#msg4380855
Hi, thanks for the info. Did this Mobo also require a power switch? The asrocks had them integrated on the mobo.
You don't need a power switch. We have the BIOS to auto-power-on upon power failure, so you just flip the PSU switch off and then on again, and the MB turns itself on.

You will need to turn it on once, before you configure the BIOS settings, but that's pretty easy to do, using a switch from an old PC case, or just simply touching the two power on pins in the MB header together with something metal, like a screwdriver or a metal pen tip.

Tips? 1crazy8pMqgwJ7tX7ZPZmyPwFbc6xZKM9
Previous Trade History - Sale Thread
Sophokles
Hero Member
*****
Offline Offline

Activity: 1218
Merit: 516


Eloncoin.org - Mars, here we come!


View Profile WWW
February 02, 2014, 12:14:04 PM
 #20

5x 280x on a Gigabyte GA-970A-D3P ($90 @ Newegg). 2x Rosewill Capstone 750W PSUs. Undervolted the GPUs to 1.019V, and getting 3.5Mh/s @ 1250W.

Here's a similar rig, but with 290s. https://bitcointalk.org/index.php?topic=7216.msg4380855#msg4380855

Cool, what brand of 280x did you use ?









▄▄████████▄▄
▄▄████████████████▄▄
▄██
████████████████████▄
▄███
██████████████████████▄
▄████
███████████████████████▄
███████████████████████▄
█████████████████▄███████
████████████████▄███████▀
██████████▄▄███▄██████▀
████████▄████▄█████▀▀
██████▄██████████▀
███▄▄█████
███████▄
██▄██████████████
░▄██████████████▀
▄█████████████▀
████████████
███████████▀
███████▀▀
.
▄▄███████▄▄
▄███████████████▄
▄███████████████████▄
▄██████████
███████████
▄███████████████████████▄
█████████████████████████
█████████████████████████
█████████████████████████
▀█
██████████████████████▀
▀██
███████████████████▀
▀███████████████████▀
▀█████████
██████▀
▀▀███████▀▀
.
 ElonCoin.org 
.
████████▄▄███████▄▄
███████▄████████████▌
██████▐██▀███████▀▀██
███████████████████▐█▌
████▄▄▄▄▄▄▄▄▄▄██▄▄▄▄▄
███▐███▀▄█▄█▀▀█▄█▄▀
███████████████████
█████████████▄████
█████████▀░▄▄▄▄▄
███████▄█▄░▀█▄▄░▀
███▄██▄▀███▄█████▄▀
▄██████▄▀███████▀
████████▄▀████▀
█████▄▄
.
"I could either watch it
happen or be a part of it"
▬▬▬▬▬
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!