800 "from scratch" gaming computer

APPROXIMATE PURCHASE DATE: Thanksgiving Week BUDGET: $800

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Surfing the Web, hardcore video gaming, watching HD video

PARTS NOT REQUIRED: Monitor, Keyboard and Mouse(will be acquired elsewhere)

PREFERRED WEBSITE(S) FOR PARTS: newegg.com COUNTRY OF ORIGIN: US

PARTS PREFERENCES: Prefer Antec for PSU and Case

OVERCLOCKING: Maybe SLI OR CROSSFIRE: Maybe

MONITOR RESOLUTION: 1920x1080

ADDITIONAL COMMENTS: Friend keeps on insisting Intel and Gigabyte, but he keeps on building me builds over budget. The budget is $800, and is pretty tight. I really don't care if the CPU is Intel or AMD. First build, and nothing salvageable from my old computer other than a DVD drive, and even then I still want a new one. Up for some light overclocking, but isn't really a priority.

Trial build, under the $800 budget, has eventual crossfire capabilities. Using a 5770 for the low noise/heat/power and it overclocks well.

CPU/RAM combo - $223 PhenomII x4 925 with G.Skill 2x2 GB DDR3 1333 8-8-8-21
http://www.newegg.com/Product/Comb [...] mbo.286528

Mobo/OS combo - $195 ASUS 790X AM3 with Windows& 64 bit
http://www.newegg.com/Product/Comb [...] mbo.292798

Case/ PSU combo - $110 Antec 300 with Antec Earthwatts 650w
http://www.newegg.com/Product/Comb [...] mbo.285167

GPU - $175 XFX 5770
http://www.newegg.com/Product/Prod [...] 6814150447

HD - $55 Samsung F3 500GB SATA
http://www.newegg.com/Product/Prod [...] 6822152181

Burner - $32 Lite on SATA
http://www.newegg.com/Product/Prod [...] 6827106334

You could get a more powerful graphic card in the 4890 and still stay in budget, depends if you want a DX11 card now or not. Replace the 4890 with a 5850 when you have the cash in the future.