SuperPi on GPU, were going CUDA

[audiofreak]

can't you just get a cheapo pci card for your primary display?

Last time I checked it had to be an NVIDIA card or the drivers will not load.

I didn't say you can't run CUDA with just one card -- I said you can't run a CUDA task that lasts longer than 5 seconds on a primary display or it will get aborted by the OS (Windows XP, don't know about Vista but probably the same applies).

As for the formula, best known PI algorithm is Chudnovsky at the moment as used in PiFast43.