-£400 First system build.

Hey, I'm thinking of building a gaming/internet pc for under £400, I have thought of these parts:

CPU: AMD Phenom II X2 550 AM3 3.1Gh 7Mb
http://www.dabs.com/products/amd-p [...] -5KQ7.html

Ram: Corsair 4GB TwinX DDR3 PC3-10600 1333Mhz Dual Channel DDR3 (2x2GB)
http://www.aria.co.uk/Products/Com [...] ctId=35381

MoBo: MSI 770-C45, AMD 770, AM3, PCI-E 2.0(x16), DDR3 1600(OC), SATA 3Gb/s, SATA RAID, ATX
http://www.scan.co.uk/Products/MSI [...] GB-LAN-ATX

Graphics Card: XFX ATI Radeon 4670 HD 750Mhz 1GB PCI-Express 2.0 DVI
http://www.dabs.com/products/xfx-a [...] -654S.html

Hard Drive: Samsung Spinpoint F3 1TB 7200rpm SATA 3Gb/s 32MB
http://www.dabs.com/products/samsu [...] %207200rpm

DVD: Sony 24x Int DVDRWRAM SATA Black Bare
http://www.dabs.com/products/sony- [...] -63FP.html

Case + PSU: Coolermaster Elite 330 Black Case With CM eXtreme Power 460W PSU
http://www.ebuyer.com/product/135101

I would like to be able to play games like L4D and Dragon Age: Origins.
What do you think of this build? Is there any room for upgrade in the future?

AMD Athlon II X3 Socket AM3 435 Retail Box Processor

http://www.ebuyer.com/product/176043

Kingston 4GB (2x2GB) DDR3 1333MHz HyperX Memory Kit CL7 1.5V

http://www.ebuyer.com/product/169488

Corsair 450W VX Series PSU - ATX12V v2.2

http://www.ebuyer.com/product/131052

Samsung HD103SJ Spinpoint F3 1TB Hard Drive SATAII 7200rpm 32MB Cache

http://www.ebuyer.com/product/173804

Sony AD-5240S 24x DVD±RW DL Internal SATA Black Bare Drive

http://www.ebuyer.com/product/170014

Gigabyte GA-MA770T-UD3P AMD 770 Socket AM3 6 Channel Audio Out ATX Motherboard

http://www.ebuyer.com/product/167782

Antec 200 Two Hundred Mid Tower Case - No

http://www.ebuyer.com/product/168615

PowerColor HD 4850 PCS 512MB GDDR3 HDMI DVI VGA Out PCI-E Graphics Card

http://www.ebuyer.com/product/168023

$474

'k..... I've decided to post with the sticky thread format:

APPROXIMATE PURCHASE DATE: This month

BUDGET RANGE: £350 - £400 After Rebates

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, internet

PARTS NOT REQUIRED: OS, mouse, keyboard, monitor.

PREFERRED WEBSITE(S) FOR PARTS: any RELIABLE site, please!

COUNTRY OF ORIGIN: England, UK

PARTS PREFERENCES:

OVERCLOCKING: Probably not, but may do in the future.

SLI OR CROSSFIRE: Maybe

MONITOR RESOLUTION: 1680x1050 / 17"

ADDITIONAL COMMENTS: I would like it to be under £400 please. Also able to play newer games like Dragon Age: Origins and L4D2, and to be upgradable in the future.