Well, after a couple of problems I ran memtest and it comes up with a lot of errors. Orthos works fine on blend, small and large FFT. I've tried reducing my overclock, relaxing the RAM times and both decreasing and increasing the RAM voltage slightly. All just seem to result in memtest finding more errors more quickly! Any ideas on other stuff to try, or am I just gonna need to replace the RAM?
However the problems that led me to use memtest (CRC errors when extracting rar files + other stuff) have only started a few days ago. Before that everything was peachy. RAM is the system in my sig.
Odd how the P5B doesn't allow mem voltage to be set to 2.2V exactly though.