Computer advice needed

I revised the system a bit, and cut the costs by more than 25% to $856.

• Ace Heroes Miditower 480W
• Asus P5QL PRO P43
• Intel Core 2 Duo E8500 (3.16 GHz)
• ATI Radeon HD4850, 512MB, GDDR3, PCI-Express
• DIMM DDR2 667 MHz, 4 GB
• Hitachi Deskstar T7K500 500GB S-ATA/300
• Samsung DVD±RW 22x Dual Layer
• Logitech S-120 speakers 2.0 (part of a bundle offer)
• Microsoft Wired Slim 500, black
• Logitech Optical Wheel Mouse, black

I really wanted a quad CPU at first, but realized I'm more likely to use the system for gaming rather than film editing. The E8500 duo CPU can easily be overclocked to 4 GHz (or closer to 4.5 GHz, but that's a bit risky), which I think should be fine. I'm still not sure about the Radeon HD 4850 GPU, but from what I've read about it, it seems to handle Crysis well.

What would you change, if anything?