Which mainboard for five GPU's on Windows 7 (64-Bit)?

twistedtrick

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Quote from: crazyates on January 31, 2014, 08:02:44 PM

Quote from: punkrock on January 31, 2014, 08:13:42 AM

@crazyates:

- Do you have this mainboard and using five cards?
- Which OS?
- How many risers are powered?

Yes, we have multiple rigs using this board, all of which have 5 cards running. 5 280x and 5 290 rigs.

Ubuntu/Xubuntu 13.10. We've used the 13.12 and the 13.11beta drivers

All 5 are powered. We use the USB style risers for a few reasons:

1) They're powered. I'm not frying our motherboards, no matter how cheap.
2) They're powered with voltage regulation, so dual PSUs can be mix-and-match. One PSU can power the riser, when the other PSU powers the GPU.
3) The USB cables are longer than your standard riser.
4) The USB cables are more flexible than your standard riser. Combined with #3, allows for a lot more creativity and better airflow when mounting your GPUs.

Regarding that motherboard, do you need to jump any of the slots or are all five GPUs recognized right out of the box? This looks like a great option, especially if I don't need to mess around with jumper cables because I'm not super comfortable doing that.

twistedtrick

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Quote from: evilix on January 30, 2014, 09:50:50 AM

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157262

$99

You'll need pci-e raisers(1x > 16x) to be able to fit all 5 GPU's however, I would recommend that you should just split the cards between two systems you're asking for trouble.

Be careful with this board...the middle PCI-e 16x slot never works on them for me for some reason (Xubuntu). I only bought the board to run 4 GPU max anyway but I was really hoping to have the flexibility to expand to 5 if I chose in the future.

ungaro59

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Quote from: punkrock on February 01, 2014, 10:48:52 AM

Quote from: ungaro59 on January 31, 2014, 09:03:11 AM

AMD Drivers only accept 4 cards on Windows 7 64. You must modify drivers to accept more than 4 cards...

How do you modify the amd 13.12 drivers to support 5 cards?

Or you can look here for 13.12 modded drivers :

https://litecointalk.org/index.php?topic=11761.0

xgtele

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https://bitcointalksearch.org/topic/5x-his-7950-iceq-x2-windows7-64bit-amd-134-driver-support-updated-6x-his-257486

punkrock

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Quote from: ungaro59 on January 31, 2014, 09:03:11 AM

AMD Drivers only accept 4 cards on Windows 7 64. You must modify drivers to accept more than 4 cards...

How do you modify the amd 13.12 drivers to support 5 cards?

punkrock

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@crazyates: Thanks for the infos. Do you have a link to the risers you bought and to the shop?

crazyates

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Quote from: punkrock on January 31, 2014, 08:13:42 AM

@crazyates:

- Do you have this mainboard and using five cards?
- Which OS?
- How many risers are powered?

Yes, we have multiple rigs using this board, all of which have 5 cards running. 5 280x and 5 290 rigs.

Ubuntu/Xubuntu 13.10. We've used the 13.12 and the 13.11beta drivers

All 5 are powered. We use the USB style risers for a few reasons:

1) They're powered. I'm not frying our motherboards, no matter how cheap.
2) They're powered with voltage regulation, so dual PSUs can be mix-and-match. One PSU can power the riser, when the other PSU powers the GPU.
3) The USB cables are longer than your standard riser.
4) The USB cables are more flexible than your standard riser. Combined with #3, allows for a lot more creativity and better airflow when mounting your GPUs.

ungaro59

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Activity: 679

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Quote from: punkrock on January 31, 2014, 01:50:39 PM

Does 12.6 work with R9 280x's?

Quote

R9 cards won't mine on anything but the 13.11 beta drivers

No.

But where can i find amd drivers 12.6 for HD 7950 ??

PS : Here : http://www.techpowerup.com/downloads/2153/amd-catalyst-12-6-software-suite-vista-7-64-bit/mirrors

punkrock

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Does 12.6 work with R9 280x's?

Quote

R9 cards won't mine on anything but the 13.11 beta drivers

Blazed

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AMD driver 12.6 does 5 GPU in Windows 7

ungaro59

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AMD Drivers only accept 4 cards on Windows 7 64. You must modify drivers to accept more than 4 cards...

punkrock

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@crazyates:

- Do you have this mainboard and using five cards?
- Which OS?
- How many risers are powered?

crazyates

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http://www.newegg.com/Product/Product.aspx?Item=N82E16813128627

$83 shipped, and works with 5 GPUs.

punkrock

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I used the GA-990FXA-UD3 but it couldn't handle five cards. Only four worked and the fifth got Error Code 43. And I read that even the GA-990FXA-UD5 has problems with more than four cards, so I am confused.

evilix

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Quote from: punkrock on January 30, 2014, 12:19:42 PM

I have 10 cards and 3x Corsair 1000 W 80+ Gold. I want to run 5 on each mainboard. Are you sure 100% that ASRock 970 EXTREME4 will handle five cards? I have enough powered x1-Riser. That's not a problem.

I don't see why it wouldn't, I do not have it myself but it should do the trick.

punkrock

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I have 10 cards and 3x Corsair 1000 W 80+ Gold. I want to run 5 on each mainboard. Are you sure 100% that ASRock 970 EXTREME4 will handle five cards? I have enough powered x1-Riser. That's not a problem.

evilix

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http://www.newegg.com/Product/Product.aspx?Item=N82E16813157262

$99

You'll need pci-e raisers(1x > 16x) to be able to fit all 5 GPU's however, I would recommend that you should just split the cards between two systems you're asking for trouble.

punkrock

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Hi,

I am looking for a mainboard that can run 5 GPU's on Win 7. Unfortunately I have to stick with Win 7 (Afterburner) because undervolting with VBE does not work with my cards. Is any of you running such a board on Win 7, preferably with am3+ socket?

Topic: Which mainboard for five GPU's on Windows 7 (64-Bit)? (Read 1524 times)