Hey xaqfields, I just realized you are running cudaPPSsieve on your computers. Perhaps you should try switching to OpenCL, it's usually up to 20% faster than CUDA. Install Nvidia drivers with OpenCL support from here and BOINC should automatically request OpenCL work then.

Similar story here:

EDIT: Nah, it appears Open CL isn't supported for PPS Sieve on Nvidia, just for GFN. Too bad, it woud probably yield better performance. Something to look ahead for.