$1000-ish gaming PC -- would like to order tonight

Does anyone have comments on this build (I know it's similar to several posted recently, but I want to confirm that I have no know compatibility issues or opportunities to get a substantially better experience for little additional cost)

Motherboard: GIGABYTE GA-MA790XT-UD4P AM3 DDR3 AMD 790X ATX AMD Motherboard $139.99

Video Card: HIS Hightech H489F1GP Radeon HD 4890 1GB 256-bit PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card $234.99

RAM: Patriot Viper 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Dual Channel Kit Desktop Memory Model PVS34G1600LLKN $89.99

Optical Drive: Sony Optiarc 24X DVD/CD Rewritable Drive Black SATA Model AD-7240S-0B - OEM $25.99

Hard Drive: Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive - OEM $99.99

Processor: AMD Phenom II X4 955 Black Edition Deneb 3.2GHz Socket AM3 125W Quad-Core Processor Model HDZ955FBGIBOX $245.00

Power Supply: CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 $99.99

Case: COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case $74.99

Total--------- $935.94

Once again, this would be a primarily gaming machine. I am looking for any input about if I have compatibility issues I am not aware of, if I am wasting my money on something that I shouldn't be or if there is a way I could substantially improve performance/ future proof-ness without spending more than anther $100-200. As I said, I know this build is substantially similar to others posted recently, but I am a first-time builder and want to be sure I don't make any silly errors before I purchase these components. Thanks for all your help.

Rumor has it that RV870 may be pushed back to Q4/09 so the HD 4890 is mighty tempting for the impatient.

All looks great to me.

The build looks good. Don't forget to look for combos on all your hardware. You can save $30 by using this combo for the CPU and motherboard:

http://www.newegg.com/Product/Comb [...] mbo.190735

You didn't mention an OS. Just be sure to get a 64-bit OS. You could use the Windows 7 RC. If you prefer to get Vista, you can save $25 by bundling it with your GPU:

http://www.newegg.com/Product/Comb [...] mbo.186035