I've done well with overclocking my processor, but how do you test your video card overclock?
A64 3000+ @ 2.42Ghz
Saphire 9600 Pro
Chaintech VFN3-250
you run a benchmark like 3ds mark 2005
also unless the manufacturer is happy with overclocking say goodby to the warranty
usually you advance the clocks a small bit at a time than run a stress benchmark and look for visual artifacts (white specs or prismatic effects , anything that is not right) to see if the card is keeping up
if you get artifacts back off
usually you dont gain enough to make it worth the effort as it is fast enough out of the box
To overclock your graphics card i reccomend a program called ATITOOL.
However, i seriously do NOT RECOMMEND OVERCOCKING! If you want to be safe and not blow up your card, don't overclock.
But if you do, try this out. Get the newest version.