Hi guys! Would you please take a look and see if my 750Ti config is good enough? I get a lot of errors 6 and 30 in cudaminer, sometimes with drivers crashing and barely running stable over 10 hrs. So here it is:

Biostar H61B mobo w/ 1 PCIe 16x and 5 PCIe 1x
XFX XXX Edition 750W PSU
2 Gb RAM
Celeron 1620 LGA1155
5x ASUS GTX750Ti all on 1 to 16 powered risers

This rig is running Win7 x86 and I spent a couple evenings trying to run off Linux with no success yet. Waiting for advice and any comments, thanks.