First build, need a little help.

[mouner]

Basically I'm about to build a gaming pc on a reasonable budget (about £1500/$2500) and so far I have picked this stuff. TBH, I have no reason for picking any of this stuff other in sounded quite good. Here's the list :

Aspire X-Cruiser Silver ATX Windowed Gaming Case - No PSU
OCZ ModStream 450W Modular PSU
Benq FP222WA 22" Widescreen 5ms 700:1 (1680x1050) Silver/Black
LG GSA H12N Super-Multi DVD±RW Dual Layer DVD-RAM 18x/18x/12x
Western Digital WD2500BB 250GB 7200RPM ATA/100 2MB Cahce - OEM
Microsoft OEM Windows XP Pro SP2B (Includes Vista Upgrade Coupon)
AMD AM2 Athlon64 X2 5000+ Dual Core OEM
ASUS M2N-SLI DELUXE
BFG 7950 GT OC 512MB GDDR3 dual DVI PCI-E
Corsair (VS2GBKIT667D2) 2 x 1 GB DDR2 667 MHz 2x128Mx64non-ECC 2x240 DIMM Unbuffered CL5
Linksys Wireless 54mbps PCI Adapter Card
Western Digital 250GB MyBook Essential USB2.0 7200RPM 8MB Cache
Extra Value Silver Wireless Multimedia Keyboard (Black Keys)
Microsoft Habu Gaming Mouse With 200DPI Razer Precision - USB
Creative SoundBlaster X-Fi Xtreme Gamer Soundcard - Retail Boxed Creative GigaWorks ProGamer G500 310W RMS THX 5.1 Speakers
Extra Value 12" Blue Dual Cold Cathode Kit

I was just wondering what other bits I'm gonna need to actually put it all together, and mainly whether it will outperform this PC Chillblast Fusion Pro 6300 OC, and if it will outperform it, by how much?

Thanks for any help you may able to give,
Mouner

 

[yas]

WHy did you choose AMD because conroe would be better value and performance

 

[mouner]

I just chose AMD, because I've always used them in the past. Which Intel would you advise instead?

 

[mouner]

Would I be able to use 2 GPU's (SLI / Crossfire) with the Gigabyte mb?