SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: gaming, photoshop, video, internet
PARTS NOT REQUIRED: OS, HDD, Peripherals, Monitor, Case, PSU (425W Hiper Power)
PREFERRED WEBSITE(S) FOR PARTS: ebuyer.com
COUNTRY OF ORIGIN: UK
PARTS PREFERENCES: no preference
OVERCLOCKING: Maybe (case has two 120mm fans)
SLI OR CROSSFIRE: No
MONITOR RESOLUTION: 1280 x 1024
ADDITIONAL COMMENTS: Needs to make MW2, Crysis, Bioshock, GTAIV playable. Currently on an Athlon 64 3000+, 2GB DDR400, Radeon X700 256MB. Current system is 5 years old, would like 2-3 years out of this system.
Here's an idea of what to look for. It should be about in your price range...
CPU: Athlon II X4 620 Propus
Mobo: Asus M4A79XTD EVO
RAM: Cheapest 1600 mhz (or 1333 mhz) DDR3 CAS Latency 7 2x2 GB kit you can find. Might have to drop to 2x1 GB.
GPU: HD 5770. Overkill for your resolution, but if you upgrade to an 1900x monitor, it should still be good.
Let me know what that comes out to, and I can tweak it from there.