if you don't know what it is. it's for overclocking graphics cards. it works by overclocking a few Mhz at a time then running some D3D thing for about 30 seconds to see if your card can handle the overclock.
last night i overclocked my GPU from 398Mhz to 452Mhz then aborted it (staying at 452 instead of going higher) cos i got worried i would kill my card. when it's overclocked there's a small ammount of artifacting in videos but there is a noticable and flawless improvement in 3D performance.
could this be damaging my card?
PS. incase you're wondering, the problems i had the other day were tracked down to teamspeak. i don't know how it effects my graphics but it does. i was rid of the glitches until i tried playing with teamspeak on and they started again. close teamspeak and they're gone