So you have one molex that is split into two to get both risers powered?
This could be a problem.
From my experience blue screens are caused mostly because of powering problems.
Check on your motherboard if it has an additiona molex connection for additional powering of PCIe ports. Some mobos have it and if you connect many cards under heavy load - it's necesary to connect this additional power source.
PCIE USB Risers/ PCIE Splitters
Moderators: ChrisHekman, aoktar
I think that might be my problem. When I run two risers i get blue screens, but I tried one this morning and it worked fine. I'll try powering the second splitter with its own molex connecter and see how that works.
Just to be curious how much risers are you running? And thanks so much for the help.
Just to be curious how much risers are you running? And thanks so much for the help.
I don't use risers now.
I've upgraded my motherboard and have 4 dual PCIe slots, so all cards fit. No need for risers at the moment.
Just one more thing. In the beginning I had a MoBo with 3 PCie slots. With 2 cards connected everything was fine. But with additional one (3 in total) I was geting blue screens too.
It appeared that this MoBo was not meant to work at such heavy loads. Blue screens of death all the time.
So sometimes it might not be a problem with risers. It might be just Mobo which istn't produced for such hard work.
I've upgraded my motherboard and have 4 dual PCIe slots, so all cards fit. No need for risers at the moment.
Just one more thing. In the beginning I had a MoBo with 3 PCie slots. With 2 cards connected everything was fine. But with additional one (3 in total) I was geting blue screens too.
It appeared that this MoBo was not meant to work at such heavy loads. Blue screens of death all the time.
So sometimes it might not be a problem with risers. It might be just Mobo which istn't produced for such hard work.
Ahh I see. I actually have an Asus Z9PE-D8 which has 7 PCIE slots so I'm sure it can handle the work load. The reason I'm using risers is because i get way better thermals when two cards are outside the case therefore i can push the overclock a little bit more. I changed around the power cables running the risers and it seems to be more stable. I'm stress testing them tonight to see how well they do.
Thanks again for the help!
Thanks again for the help!
Yea guys I think I'm going to give up on this. I still get errors no matter what I do. I think I might try a cluster from amfeltec. The cards get more bandwidth which should be better for more high poly scenes. Will let you guys knwo how it goes.
Actually, GPU cluster & backplate (that I've build this based on) will not give more bandwith.. as it's x1 "splitted" so You get the same cap as You do with x1 risers..sekani20 wrote:Yea guys I think I'm going to give up on this. I still get errors no matter what I do. I think I might try a cluster from amfeltec. The cards get more bandwidth which should be better for more high poly scenes. Will let you guys knwo how it goes.
honestly, I would advise to get something like longer PCIe ribon cable if You want to have more speed (as far as I know You can get up to 50cm from company like 3M) Latelly I've got this combo to play with (but it's yet to be seen how stable it will be). However One GPU on that long cable seems to work fine & from limmited testing I've done seems splitter works on ribbon PCIe cable as well (but I need mroe testing to do on this - waiting for some news about performance of 1080s & new AMD cards before jumping in with this build =)