I've picked out the components listed below to build a portable gaming computer. My budget is around $800. It's been about ten years since I built my last computer, so I'm a bit rusty. I would greatly appreciate any opinions you have about the compatibility, cost, and performance of this system.
ASPIRE X-QPACK-AL/420 Black/Silver Aluminum MicroATX Desktop Computer Case 420W Power Supply - Retail
http://www.newegg.com/product/product.asp?item=N82E16811144109MSI RS480M2-IL Socket 939 ATI Radeon XPRESS 200 Micro ATX AMD Motherboard - Retail
http://www.newegg.com/product/product.asp?item=N82E16813130485AMD Athlon 64 3200+ Winchester Integrated into Chip FSB Socket 939 Processor Model ADA3200BIBOX - Retail
http://www.newegg.com/product/product.asp?item=N82E16819103502SAPPHIRE 100600L-Red Radeon X800PRO 256MB GDDR3 PCI-Express x16 Video Card - Retail
http://www.newegg.com/product/product.asp?item=N82E16814102466Rosewill 1GB (2 x 512MB) 184-Pin DDR SDRAM DDR 400 (PC 3200) Unbuffered Dual Channel Kit System Memory Model RW400/1024KITDP - Retail
http://www.newegg.com/product/product.asp?item=N82E16820223030Western Digital Caviar SE WD800JD 80GB 7200 RPM Serial ATA150 Hard Drive - OEM
http://www.newegg.com/product/product.asp?item=N82E16822135106SONY Black IDE Combo Drive Model CRX320E Black - OEM
http://www.newegg.com/product/product.asp?item=N82E16827106819
I'm considering replacing the 7200 RPM hard drive with Western Digital's 36.7GB 10,000 RPM Serial ATA150 drive, but my budget is pretty tight and I only want to do it if there is a huge difference in performance. I play Counter-Strike: Source and Battlefield 2.