I have a 8800 GTS 640 MB.
How many threads can this card
run concurrently, that they are really running
in parallel, regardless whether tey are in a
thread block or not.
The CUDA programming guide
says that a 8800 GTS has
12 Multiprocessors with 16 CPUs each.
So I think the number is 384 threads.
But I think that there are
other limitations in the warp size
so it is only 256.