I've used ATI cards for years, ATI is currently owned by AMD. I once used nvidia cards as well although since the whole geforce 8400gs/8600gt overheating fiasco I have not purchased an nividia card. It appears that nvidia has corrected these issues and I would consider a card from them on my next build if their cards are competitive price/performance wise at that time. I currently have a Radeon HD5870 in my main system (no longer made but equivelent to a HD6950 performance wise) and it has been excelent performance wise. The 6850 is verry similar performance wise to the GTX 460 here is a comparison (this is a comparison of last year's cards but the 6850 is roughly equivelent to the HD5830) The HD5830 actually scores better than the gtx 460 in some benchmarks. The ATI HD 6850 has a slightly higher core clock and nearly three times the cores as the GTX 460 but the GTX 460 has a much higher memory clock. These more or less balance each other out making the HD6850 slightly better at some aplications and the GTX 460 slightly better at others. However due to this higher clock the GTX 460 runs much hotter and is far less efficent then the HD 6850 (This is why the GTX 460 is not avalible in single slot form).I was pretty much Hooked on GTX 460, so thats disappointing for me. Is there any way to remedy the situation like buying a new Dell casing that supports dual slot. Also can u give me ur take on the HD 6850. i have never used the Ati brand so im a bit affraid to experiment?