Just picked up an 8800GTS 512 off of newegg. Curious if I will really notice the difference over my 8800GTS 320. I know I can use the step up program if something better comes along soon. Im not intrested in the 9800GX2 as I wont spend that much $ and not sure id like the extra heat and noise along with probably needing a larger PSU.. I assume the 9800GTX if it releases would be the next upgrade?