I've just noticed that the two units that I have completed on my
660Ti have the same amount of CPU time as GPU time.

Is this correct?
I also notice that despite Boinc showing (0.03 CPU and 1 Nvidia GPU) that according to my resource monitor, ACEMDLONG is averaging 12.5% cpu, which, on my system, is a full core (i7-2600K)

http://www.gpugrid.net/result.php?resultid=6111707

http://www.gpugrid.net/result.php?resultid=6043519

Are these tasks just using a lot more CPU than they used to, or do I need to change something??

Also, I am running 8 Docking tasks at the same time, I never worried about leaving a core free before because GPUGrid used to use so little CPU and leaving a core free did not make any difference to the runtime.

I thought this was normal... in my case BOINC shows 0.615 CPU + 1 NVIDIA GPU. It basically takes a whole thread (HT'ed CPU). I let BOINC use only 88% of my cores as to leave one thread available for GPUGRID, doing this, the task manager shows 100% CPU usage.

Also, freeing TWO threads increases the GPU utilization from 96-97% to a solid 99%, but I rather crunch another WU with that thread at the expense of 1-2% of GPU usage.

CPU: i7 3610QM
GPU: GTX 660M

I'd imagine the faster the GPU, the more CPU time it'd need to keep it fed... so yours should use even more CPU than mine.

True, but the never used to be equal.
it might have been 20 to 1 in favor of the GPU.

no big deal.

I tried freeing up a thread, but it didn't make any difference to the runtime that I could see, nor did it change the GPU usage (96%)
Probably because of the lack of GPU scheduling and that I run my CPU at 4.5 Ghz.

It is interesting that these tasks on a Kepler card use so much more CPU time than on a Fermi.

Use lots of Vram too, They seem to take around 1GB.