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Title: Stable motherboard for 4 GPUs? Post by: amazingrando on August 22, 2011, 07:10:09 PM I have a Biostar A870 that is rock solid with 2 GPUs, but flaky with 3, and with 4 is very unstable. There is plenty of PSU power (1000W with max power draw at socket <800W with 4 GPU on full load).
Is there a board that is working well for others with 4 GPUs without the need for the extender with the molex connector (way too expensive)? Thanks Title: Re: Stable motherboard for 4 GPUs? Post by: SuperTramp on August 22, 2011, 10:57:04 PM Check this thread out...... https://bitcointalk.org/index.php?topic=37880.0
-ST Title: Re: Stable motherboard for 4 GPUs? Post by: jamesg on August 23, 2011, 12:59:06 AM I have a Biostar A870 that is rock solid with 2 GPUs, but flaky with 3, and with 4 is very unstable. There is plenty of PSU power (1000W with max power draw at socket <800W with 4 GPU on full load). Is there a board that is working well for others with 4 GPUs without the need for the extender with the molex connector (way too expensive)? Thanks I would highly recommend the asrock board linked below. It's been rock solid (no pun indented). http://www.newegg.com/Product/Product.aspx?Item=N82E16813157262 Title: Re: Stable motherboard for 4 GPUs? Post by: amazingrando on August 23, 2011, 05:41:36 PM I would highly recommend the asrock board linked below. It's been rock solid (no pun indented). http://www.newegg.com/Product/Product.aspx?Item=N82E16813157262 Thank you for the suggestion. Are you using yours with 4 or 5 GPUs? What extender cables are you using (1x/16x, with/without molex power, etc.)? Title: Re: Stable motherboard for 4 GPUs? Post by: jamesg on August 24, 2011, 04:04:12 AM I would highly recommend the asrock board linked below. It's been rock solid (no pun indented). http://www.newegg.com/Product/Product.aspx?Item=N82E16813157262 Thank you for the suggestion. Are you using yours with 4 or 5 GPUs? What extender cables are you using (1x/16x, with/without molex power, etc.)? 5 5830s with 3 16x and 2 1-16x extenders without molex. I now have 5 boxes running this configuration and everything is working out great. Title: Re: Stable motherboard for 4 GPUs? Post by: amazingrando on August 24, 2011, 05:57:08 PM Nice. I'll have to give that some thought as I look to expand. Right now, I have one of my rigs using a Biostar A870 with 4 x 6950's and it's totally solid. For some reason with another one I'm having issues. At first I thought it was a mobo issue, but now I'm thinking that it's a software issue. I changed out the mobo and had the same effect.
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