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Title: MSI 970A-G43 with 4x GPU in W7 x64 Post by: marhevek on January 22, 2014, 09:57:01 PM Hi guys,
I can't make my MSI 970A-G43 work with 4x Sapphire 7950. I've tried varies of risers 1x-1x and 1x-16x and Windows 7 x64 doesn't see more than 2 GPUs. I turned all of the unnecessary gear in bios. I am using 1600W PSU. I also tried to change PCI latency, empower the risers and I checked the system with Sempron 145 and Athlon x2 I am using now - nothing has helped, W7 sees only 2 GPUs. Is it possible to make this mobo work with more than 2 GPUs? Best regards, LG Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: Christiaan on January 23, 2014, 10:55:22 AM Your best option is using Linux Xubuntu intead of W7 wich is known for its difficultuy handling more than three video cards. You can find a desrciption of installing Linux on cryptobadger:
http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-linux/ Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: EPiSKiNG on February 14, 2014, 03:00:54 PM Hi guys, I can't make my MSI 970A-G43 work with 4x Sapphire 7950. I've tried varies of risers 1x-1x and 1x-16x and Windows 7 x64 doesn't see more than 2 GPUs. I turned all of the unnecessary gear in bios. I am using 1600W PSU. I also tried to change PCI latency, empower the risers and I checked the system with Sempron 145 and Athlon x2 I am using now - nothing has helped, W7 sees only 2 GPUs. Is it possible to make this mobo work with more than 2 GPUs? Best regards, LG I have that same Motherboard and I haven't been able to get more than 2 GPUs detected in windows. I should have some time this weekend to use a combination of USB risers, powered risers, shorting pins on PCI-E slot, and multiple configurations to see if it's possible.... I've read somewhere that you need to update to the latest BIOS and enable IOMMU. I have like 5 of these boards, so getting 4 GPUs to work would be very good... Let's both work on it and get it figured out. -EP Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: UntouchedApple on February 14, 2014, 09:10:49 PM i saw someone using windows 8 and he was using 6 videocards and they were working correctly so you could try windows 8
Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: EPiSKiNG on February 14, 2014, 09:27:06 PM i saw someone using windows 8 and he was using 6 videocards and they were working correctly so you could try windows 8 The issue is unrelated to the OS.... Windows 7 will support 4 GPU no problem.. The issue is getting the motherboard to recognize cards installed in the PCIe slots. -EP Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: DMP87 on February 24, 2014, 06:02:24 PM Hi OP,
Did you ever get more than 2 cards to work on this board? I am having the same problem. Thanks. Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: ipcoins on March 01, 2014, 11:04:12 PM Did you ever get more than 2 cards to work on this board? I am having the same problem. Enabling the IOMMU in BIOS worked for me with the same MOBO. But I couldn't find the IOMMU! So for anyone else looking... It's under the OC Menu, then look at CPU features. Title: Re: MSI 970A-G43 with 4x GPU in W7 x64 Post by: DMP87 on March 05, 2014, 01:57:43 PM Did you ever get more than 2 cards to work on this board? I am having the same problem. Enabling the IOMMU in BIOS worked for me with the same MOBO. But I couldn't find the IOMMU! So for anyone else looking... It's under the OC Menu, then look at CPU features. That didnt work for me. I ended up RMA the board. I have a gigabyte coming in today. Thanks for the reply though. |