Upgrading on a Budget

[bnix13]

Currently I have two computers and I'm debating selling one upgrading some things and hopefully come out with a pretty decent gaming machine.

Computer 1
MB: m2n32 sli deluxe am2
CPU: AMD Athlon 64 x2 overclocked to 3100 mhz 65w @ 2600 mhz
HD: seagate 320gb 7200.10
PSU: Ultra X3 600W
Video: EVGA Nvidia 7900 gt ko
Case: Ultra case no longer manufactured
Memory: 2x2gb corsair xms2 800
Tuniq tower

Computer 2
MB: M3A78-EM am2+
CPU: AMD Athlon 64 x2 5050e 2600 mhz 45w @ 2600 mhz
HD: 640GB WD green
60GB 5400rpm drive
PSU: OCZ 430W
Video: Ati Radeon 3450 (initial intention was for a HTPC)
Case: Thermaltake Lanparty
Memory: 2x1gb corsair xms2 800

Selling:
MB: m2n32 sli deluxe
CPU: 5050e
HD: 320 GB
PSU: OCZ 430w
Video: 7900 gt
Case: Ultra case
Memory: 2x1gb
120mm fans, cd/dvd drives, etc

Keeping:
MB: M3A78-EM am2+
CPU: AMD X2 5000+ BE hoping for 3.2 Ghz
HD: Spinpoint F3 1TB
PSU: Ultra X3 600W
Video: XFX ATI HD 5770
Case: Thermaltake Lanbox Lite
Memory: 2x2 Gb
Cooler: GeminII S
Windows 7 student edition

P.S. The first computer was the first I ever built (added to over the years) and I have overclockers to thank and as always thanks in advance.