Hello all, I recently ordered a new computer system with the following specs: Athlon 64 X2 5000+ (2.60GHz, 512Kx2) 2GB DDR2 SDRAM at 667MHz 256MB NVIDIA GeForce 8600GT- DDR3 250GB SATA II Hard Drive Since it's a Dell system, it'll ship with Vista pre-installed on it; however, I can also get my hands on a 64-bit XP version. I was wondering which would be the better choice in terms of gaming performance for now. I've leafed through a series of articles that scrutinize the Nvidia driver / hardware performance on Vista with as much as 30% performance loss for some titles; however, I am a bit worried about the 64 bit / dual core support under XP opposed to Vista. Ultimately, it seems like a tradeoff between GPU and CPU optimization, with XP doing good on the graphics, but Vista making the most of the duals and the 64-bit support. Also, with controversy on 64-bit XP being unstable, would a 32-bit XP as a third alternative even make sense with this setup? I get the feeling that I'd be missing out on some potential performance, however I'd have a solid platform to rely on since I've been using XP on my past 2 machines without any major issues. Thoughts, ideas, flames, tossed rocks? Thanks in advance!