what kind of hashing power does get the gtx750ti on MRC ?
152-155khs, overclocked to 1360mhz
Yes it does happen when I use -d 4. Just confirmed.
For people asking questions about risers... I'm not sure whether the 5th/6th GPU aren't getting enough power or if they're having issues communicating because of the risers, but the other cards seem to be doing just fine. Here's a pic of the rig
The HF engineer in me cries "OMG THAT CABLE LENGTH!". Do you have somewhat shorter USB 3 spec cables to try this with? Maybe some of the nVidia cards are having trouble with signals getting distorted on these long cables.