yeah normally with dnet and nvidia cards. it will take a whole cpu core to feed the video cards. but the cpu cant keep up with the gpus. if you want to get 99% load on the gpus you will need to switch projects. or go to 1 nvidia.
I have 2 nvidia cards in my system(total of 4 GPUs), but it will only use 1 card at a time... is it able to use all 4?
I tried putting dummy plugs in and extending the desktop too.
I have 4 CPU cores, so its no big deal if they are CPU hungry
since the 295's are 2 gpus, but still one pcb i think that they will split a single work unit. not for certain on that. the last 2gpu card i had was a 7950gx2 and boinc didnt support cuda then. in the messages tab does it see both cards?