I haven't overclocked or undervolted the system or any cards. It was a clean install, I got 3 cards stable seated on the motherboard then started trying with the risers. The only time I get the artifacts is with the 1x risers, the 4x(they're actually 8x) risers work just fine, and if I remember right I don't even get to the bios with a 16x riser. I have checked each riser in a different motherboard and they all worked but I'll double check. I have an identical motherboard so that will help. (On a side note, the machine that I checked the risers on will now only see a pci-e card with a 1x-16x riser, doesn't even work if seated on it.)
I guess since you left your z77a bios at default you never messed with turning off pci-e 3 the pci latency. I probably should have asked this a long time ago but do I need to short slot 5 if no card/riser is in there? It seemed to help but I'll test that too. Thanks for helping.
Topic: 6 GPUs on mobo MSI Z77A-G45 - page 2. (Read 4240 times)
I have my BIOS at default. To test the risers I would try each one individually on slot 2. I have in the past noticed weird behavior on getting GPUs noticed. I have always found the best success to use the slots in this order if running less than 5 cards. 2,1,7,6,3, & 5 last with 5 being the only shorted slot and to be used for the 6th card. I also use 1x risers on everything, I can't say for sure on this mobo, but some mobos have issues supplying the bandwidth with larger risers.
Also artifacts are often a clock/voltage issue, have you overclocked or undervolted?
Also artifacts are often a clock/voltage issue, have you overclocked or undervolted?
tsg (or Gazza1),
what are your settings in bios? I have the same motherboard and cards but I can't get past bios with cards on my risers. Right now I have a 1x-16x powered riser in slot 2 and a 1x-16x powered riser in slot 5. Slot 5 is shorted. I can see the bios screen but it is off center and the text is all messed up and there are artifacts everywhere. Then windows tries to start and crashes.
nI can get to windows with 2 cards on risers in slot 2 and 5 (shorted) with 4x-16x risers. But Nothing else works, if I try to install a 3rd card on a 1x-16 riser or exchange one of the 4x-16x risers for a 1x-16x riser I can't make it past bios.
Any ideas? Could my 1x-16x risers be bad?
Thanks in advance.
what are your settings in bios? I have the same motherboard and cards but I can't get past bios with cards on my risers. Right now I have a 1x-16x powered riser in slot 2 and a 1x-16x powered riser in slot 5. Slot 5 is shorted. I can see the bios screen but it is off center and the text is all messed up and there are artifacts everywhere. Then windows tries to start and crashes.
nI can get to windows with 2 cards on risers in slot 2 and 5 (shorted) with 4x-16x risers. But Nothing else works, if I try to install a 3rd card on a 1x-16 riser or exchange one of the 4x-16x risers for a 1x-16x riser I can't make it past bios.
Any ideas? Could my 1x-16x risers be bad?
Thanks in advance.
Have you tried CGMiner?
I installed cgminer today
Now it works perfectly
Mobo for 6 gpu for 100-120 usd, great
Have you tried CGMiner?
Glad you got it workin Not sure about multiminer, maybe someone else can chime in 
Not sure about multiminer, maybe someone else can chime in You need to only short slot number 5. Then don't use slot number 4 as it deactivates. Use slots 1,2,3,5,6,7 1x risers must be used on all slots.
It works!
Linux sees now 6 GPU, but when I install Multiminer, it can see only one GPU ;c
You need to only short slot number 5. Then don't use slot number 4 as it deactivates. Use slots 1,2,3,5,6,7 1x risers must be used on all slots.
Hi everyone,
I can't connect 6 GPUs (Asus r9 290) to my motherboard MSI Z77A-G45.
I read these posts: https://bitcointalk.org/index.php?PHPSESSID=nbigpv5ko1uc856pi2et7jjpj1&topic=102547.msg1124000#msg1124000 and https://bitcointalksearch.org/topic/m.1515460
and I know that it is possible to run 6 GPUs on that mobo.
Linux (ubuntu) can see max 5x cards when I short two middle x1 slots (http://pl.tinypic.com/view.php?pic=2qn48ip&s=8), PCI-E pins like that https://ip.bitcointalk.org/?u=http%3A%2F%2Fblog.zorinaq.com%2Fimages%2Fpcie-short-schematic.png&t=536&c=8DJ_1hJYAKw0Ag
Hardware:
6gb DDR3
Intel G1610
3x PSU Corsair 750 W 80+gold
Could you help me to solve the problem?
Thank you in advance
I can't connect 6 GPUs (Asus r9 290) to my motherboard MSI Z77A-G45.
I read these posts: https://bitcointalk.org/index.php?PHPSESSID=nbigpv5ko1uc856pi2et7jjpj1&topic=102547.msg1124000#msg1124000 and https://bitcointalksearch.org/topic/m.1515460
and I know that it is possible to run 6 GPUs on that mobo.
Linux (ubuntu) can see max 5x cards when I short two middle x1 slots (http://pl.tinypic.com/view.php?pic=2qn48ip&s=8), PCI-E pins like that https://ip.bitcointalk.org/?u=http%3A%2F%2Fblog.zorinaq.com%2Fimages%2Fpcie-short-schematic.png&t=536&c=8DJ_1hJYAKw0Ag
Hardware:
6gb DDR3
Intel G1610
3x PSU Corsair 750 W 80+gold
Could you help me to solve the problem?
Thank you in advance
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