I just put a new box together, but I don't think it's working right, at least not to it's full potential. I have an Asus P5N-D motherboard, Q9300 cpu, 2 gig strip of ddr2 800 memory, two 9600GT 512mb video cards, a 650w PSU, and some other things. My issues are these; In bios it shows which chip I have, but says CPU speed is only 2.0, not the 2.5 it should be. I did install the lastest bios, 502, but it didn't help much. Whether I have the SLI hooked up or not, there isn't a performance difference. I took one card out, I've had both cards in not hooked up, and both cards in hooked up and the results are all the exact same. The lastest Nvidia software/driver says SLI is enabled, but that doesn't change any performance issues. In general the computer just doesn't seem to run nearly as fast as it should. I upgraded from a P4 2.8 1 gig mem. 4-5 year old board, but the performance isn't very different. I'd like to know if anyone else has the same board with 9600GT cards SLIed and has it noticably working.? If so, at boot up in dos, will it show 1 gig of video memory or just one card's 512? My dos screen only shows one card's info where I'm guessing if SLI was correctly done it would show both. I could be wrong there tho. Any advice or ideas would be great. Thanks.