Hi guys, I'm having an interesting issue with miner and cards. This is my first nVidia rig and been running it with x86 Win7. Cudaminer seems to crash when cards are either in overclocked or in stock mode, software like Afterburner, Gpu Tweak and OC Guru just crash the system. I'm pretty sure the issue is with the cards brand/risers, but would like to see if anyone is having similar issues. Hardly breaking 280 kh/s barrier per card with a 5 card setup:
Biostar H61B, 1*PCIe 16x, 5*PCIe 1x
2Gb RAM
32 GB SSD
Celeron G1620
XFX XXX Edition 750W PSU
Win7 pro x86
5*ASUS GTX 750Ti, all on 1 to 16 powered risers (seems that the problem is here?)
The longest I've run before Cudaminer crashing is about 8hrs. Does anyone have nice Kepler bios settings I can flash or other remedy to break the 300 kh/s per card?