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Title: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: wojgp on July 16, 2013, 03:00:28 PM Hi
I am trying to get more than 4 GPU working with 990FXA-GD65 and Sapphire 7870XT Tahiti, but every 5th card get error I shorten pins in all PCI-E x1 sockets on motherboard, except x16 sockets. I use win64-bit , Sempron X2 190 cpu and 2GB RAM Please help http://gsm-support.net/download/msi/screenshot.jpg In another PC with the same mobo I use 3 x Sapphire 7870 XT Tahiti + 1 x HD6990 and all 5 GPUs are workable. Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: malevolent on July 16, 2013, 04:03:53 PM What drivers and SDK combination are you using? Are they the same ones as in your other rig that is working fine with 5 GPUs? Some driver versions won't let you run with more than 4 GPUs. Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: wojgp on July 16, 2013, 04:07:40 PM I use ATI 13.1 same as in another rig-without SDK , becuase I use it for sha1 algo. I've just tried to connect powered riser to one of cards, but it is the same.
Is there any sense to shorten pins in 16x slots if I connect them with card using 16x-16x riser ? The last thing I could try is to use all powered risers. Do You have any other ideas ? Thanks. Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: crazyates on July 16, 2013, 04:26:56 PM 32 or 64 bit windows?
Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: wojgp on July 16, 2013, 04:42:09 PM Win7 64-bit ultimate
Just connected 2nd powered riser, result is the same Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: anderl on July 17, 2013, 03:18:12 PM Win7 64-bit ultimate Go Windows 8. I had the same problem with Win7 and 5 cards.Just connected 2nd powered riser, result is the same Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: wojgp on July 17, 2013, 03:44:42 PM Thanks. Could You recommend any other mobo which will allow to work with 6 GPUs ? Prefered MSI ;) Any CPU , but I hope not MSI Bing Bang X-Power II ;)
Title: Re: MSI 990FXA-GD65 and Sapphire 7870 XT Tahiti - only 4 cards working Post by: Zanatos666 on July 17, 2013, 03:56:34 PM Read this today. Maybe this would work.
https://bitcointalk.org/index.php?topic=257486.0 (https://bitcointalk.org/index.php?topic=257486.0) |
