Motherboards: What Works w/Four or More GPUs? List Them

[hmongotaku]

thanks for the confirmation, was freaking out that I might actually have to learn linux to run 5 gpus on a setup.

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[amazingrando]

Has anyone used a Gigabyte GA-970A-UD3 (not the -D3 version, but -UD3)?  Considering getting a few of those.

[Brunic]

Has anyone used a Gigabyte GA-970A-UD3 (not the -D3 version, but -UD3)?  Considering getting a few of those.

I didn't use them, but like I said earlier in this topic, if you want to boot with an USB key, this brand of motherboard can really be a pain in the ass.

[likuidxd]

WHAT WORKS
Motherboard Brand: MSI
Motherboard Model & PCIe Slots: Big Bang Masrshal B3 8x PCIe x16 slots
Power Supply Brand & Model: Antec HC 1200 & Antec HP 750
Number & Model GPUs: 8x 5870
Extender Cables w/Molex Power?: 8 x16 -> x16 Risers no molex

Works in BAMT & Windows 7. LinuxCoin final periodically crashes after 15mins to 1 hour. 1550W, 124V & 15Amps at peak load 3.2GHs.

This thing is a beast but a major pain in the ass build & not recommended to anyone that isn't technically inclined or hasn't built quite a few rigs.

[minero1]

WHAT WORKS
Motherboard Brand: EVGA
Motherboard Model & PCIe Slots: P55v/P55Sli 2 x Pci-e x16; 2 x Pci-e x1
Power Supply Brand & Model: Artesyn IBM blade server PSU 1000W
Number & Model GPUs: 2x 5970 & 2x 5830
Extender Cables w/Molex Power?: 2 x16 & 2 x1-> x16 Risers no molex

WHAT sort of WORKS
Motherboard Brand: MSI
Motherboard Model & PCIe Slots: 790FX-GD70 4 x Pci-e x16; 1 x Pci-e x1
Power Supply Brand & Model: Artesyn IBM blade server PSU 1000W
Number & Model GPUs: 2x 5970 & 2x 5830
Extender Cables w/Molex Power?: 2 x16 & 2 x1-> x16 Risers no molex
Only works if you plug 4th card to x1 Pci-e, plug it in the 4th x16 pci-e and it boot loops

[BinaryMage]

WHAT WORKS
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-EP45-UD3P; 2 x16, 3 x1
Power Supply Brand & Model: OCZ ZX1250W
Number & Model GPUs: HD 5870 Reference (AMD) x5
Extender Cables w/Molex Power?: 2 x16 to x16 extenders w/o power, 3 x1 to x16 extenders with molex power

Tested and working on both Ubuntu and Debian (BAMT). Note that X output is piped to the card on the first x16 slot and basic standard output (terminal w/o X) is piped to the first card. (on an x1 slot)

[check_status]

MSI 890FXA-GD70 MSI 890FXA-GD70 MSI 890FXA-GD70 MSI 890FXA-GD70 MSI 890FXA-GD70

thats all you need to know.

Been trying to buy one off Ebay for my target 'under $100' and those suckers are always goin for 110-140, with alot of snipers. **sons-of-bitches
This board has got to be broken to sell under $100.

[cmg5461]

just a suggestion, but could you make a list of the mobo's that work?

[mikeo]

No, I'm done with this thread. Some else is welcome to aggragate the info here though.

[check_status]

How do you determine what's working when you have conflicting reports on some boards?
P.S. Try Googling "ga h61 d2h-b3". That board does not compute.

[malevolent]

WHAT WORKS
1)
Motherboard Brand: Asus
Motherboard Model & PCIe Slots: P5Q-E, 3x PCIe x16 and 2x PCIe x1
Power Supply Brand & Model: Corsair TX850v2
Number & Model GPUs: max. 5GPUs tested so far: 3x HD 5850 1GB @ 945/280/1.088 + 1x HD 5830 800/200/0.9V + 1x HD 6770 @ 825/180/0.82V
Extender Cables w/Molex Power?: 5850s and 5830 on extenders and HD 6770 in PCIe x16 slot
none of the extenders are powered

PCIe x1 slots require shorting pins (A1-B17).

Max. 4 GPUs under 12.1, 5 GPUs (all pcie slots are used) under previous driver versions.


2)

WHAT WORKS
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-965-S3, 1x PCIe x16 and 3x PCIe x1
Power Supply Brand & Model: Tagan TG1000-U33II 1000W
Number & Model GPUs: 3x HD 5870 between 910 and 1000/210 + 1x HD 5850 900/300 all stock voltage
Extender Cables w/Molex Power?: 5870 on normal unpowered extenders, 5850 in slot

NOTE: the x16 slot stopped working (no device in that slot gets recognized) after a few weeks and now only PCIe x1 slots work

[e21]

WHAT WORKS
Motherboard Brand: ASUS
Motherboard Model & PCIe Slots: P8P67 WS Platinum 1503 BIOS, 4 PCIE-16X + 3 PCIE-1X
Power Supply Brand & Model: KingWin LAZER 1050W
Number & Model GPUs: 3x 6950 + 3x 6570
Extender Cables w/Molex Power?: 3x 6950s using 1X risers, no power, 3x 6570s seated in X16 slots, no risers

All 6 GPUs recognized and mining on Windows 7 64bit @1.57GH/s, 11.12 driver (12.1 DOES NOT WORK!) 2.5 SDK.

[ZPK]

WHATS WORK
Sempron 145 ... UCC OFF
ASRock 970 Extreme 4
2GB ram + HDD 2.5" 250Gb
6970(950/340)+5870(950/300)+5850(900/300)+5870(950/300)=1590+ mhs avg...
*DEAD PSU Chieftec BPS-1200C - work <3 months
*NEW PSU Corsair AX1200
*DEAD Gigabyte 5850
*DEAD Sapphire Dual-X 7970 06-40G 1/2 fan stop
Win 7 x64 SP1

WHATS WORK
Core E4400
Gigabyte 945P-S3 rev 1.0
2Gb ram + 250Gb HDD
5870 (950/300) + 2*5850 (shit work on 900/300,350) + 5770 (950/300) = 1378 mhs avg
PSU Corsair 750WTXV2
Win 7 x64 SP1 (maybe go to BAMT in future)

[tnkflx]

WORKS: Gigabyte GA-990FXA-UD7 with 4x ATI 6990.

[fabrizziop]

WHAT WORKS

MSI 785G-E53 (1 16x, 3 1x)
Tested with 4 5830s, running for 1.5 months now!.

[ModusPwnd]

Has anyone used a Gigabyte GA-970A-UD3 (not the -D3 version, but -UD3)?  Considering getting a few of those.

I didn't use them, but like I said earlier in this topic, if you want to boot with an USB key, this brand of motherboard can really be a pain in the ass.

Older post, but I will echo the words.  I have that model of mobo packaged up for return right now because it wont boot off of my USB key  (not sure if its the UD3 or D3...)

[ModusPwnd]

WHATS WORK
Sempron 145 ... UCC ON 2 core 3ghz
ASRock 970 Extreme 4
2GB ram+250Gb 2.5" HDD
6950(70)+5870+5850+5770=1440mhs avg.....want to build 6970+5870+3*5850(or maybe 6970+2*5870+2*5850)...no money....)))
PSU Chieftec BPS-1200C open rig

Win 7 x64 SP1

I have the same board, and it does work with 4 GPUs.  I am actually running 5 on one right now.  (same CPU too)

BUT, the last two I have bought have a bunk PCIe x16 slot!  Both of the last two I bought had a bad PCIE4 slot, that is the middle x16 slot.  I have a third coming from NewEgg right now...  I hope it works, because I like this board otherwise!

[jamesg]

I have the same board, and it does work with 4 GPUs.  I am actually running 5 on one right now.  (same CPU too)

BUT, the last two I have bought have a bunk PCIe x16 slot!  Both of the last two I bought had a bad PCIE4 slot, that is the middle x16 slot.  I have a third coming from NewEgg right now...  I hope it works, because I like this board otherwise!

I've had a couple of the asrock 970 boards come a little flaky. I just bought 20 of them so I had extras when I was building out my rigs.

They also sell these boards at amazon. If you have prime, you can same of the shipping charges.

http://www.amazon.com/ASRock-MB-970EX4-970-CrossFireX-Motherboard/dp/B0058HUQJ0

If you only need 4 PCIe slots on a board, you could also check this one out as it is $30 cheaper.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157280

[rograz]

http://www.newegg.com/Product/Product.aspx?Item=N82E16813130645&Tpk=MSI%20Z77A-G45

looks interesting, you don't see that many boards with 7 pci-e and especially not in that price bracket

[superfastkyle]

MSI 970a-g46 works good with 1x to 16x extenders
4 5850 sapphire about 480 watts with undervolted sempron

Anyone know how to get 1x working MSI 990XA-GD55 I've tried the pin shorting trick and added a molex adapter.

Asrock 970 Extreme3 I can only get one of the 1x slots working with extender so just 3 slots with this one