Advice on £700 Gaming Rig

[Guest]

APPROXIMATE PURCHASE DATE: Probably this week.

BUDGET RANGE: £650-£750

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, Internet, Homework, Music

PARTS NOT REQUIRED: Keyboard, Mouse, Speakers, Monitor

PREFERRED WEBSITE(S) FOR PARTS: From what I've seen Scan.co.uk has the best value for money, but I'm willing to use other sites.

COUNTRY OF ORIGIN: Scotland

PARTS PREFERENCES: None really

OVERCLOCKING: No experience in overclocking.

SLI OR CROSSFIRE: In the future

MONITOR RESOLUTION: 1280x1024,

Ok, so here's what I'm planning so far.

Hard Drive: 500 GB Samsung HD501LJ Spinpoint T166, SATA II, 7200 rpm, 16MB Cache, 8.9 ms, NCQ - £35.21
http://www.scan.co.uk/Products/500-GB-Samsung-HD501LJ-Spinpoint-T166-SATA-II-7200-rpm-16MB-Cache-89-ms-NCQ

Case: Antec 300 Three Hundred, Black Midi Tower Ultimate Gaming Case - £43.45
http://www.scan.co.uk/Products/Antec-300-Three-Hundred-Black-Midi-Tower-Ultimate-Gaming-Case-w-o-PSU

RAM: 6GB (3x2GB) Corsair XMS3, DDR3 PC3-12800 (1600) Non-ECC Unbuffered, CAS 9-9-9-24, 1.65V - £139.97
http://www.scan.co.uk/Products/6GB-%283x2GB%29-Corsair-XMS3-DDR3-PC3-12800-%281600%29-Non-ECC-Unbuffered-CAS-9-9-9-24-165V

Processor: AMD Phenom II X4 955 BlackEdition, Sok AM3, 3.2GHz, 8MB Total Cache - £130.37
http://www.scan.co.uk/Products/AMD-Phenom-II-X4-955-BlackEdition-Sok-AM3-32GHz-8MB-Total-Cache-125W-Retail

PSU: 700W CiT Silent PSU - £31.69
http://www.scan.co.uk/Products/700W-CiT-Silent-PSU-20-24Pin-120mm-Silent-Fan-ATX12V-22-Dual-12V-Rails-SATA-and-PCI-E-Ready

GPU: 1GB Powercolor HD5770 - £116.29
http://www.scan.co.uk/Products/1GB-Powercolor-HD5770-PCI-E-20%28x16%29-4800MHz-GDDR5-GPU-850MHz-Cores-800-2x-DL-DVI-I-HDMI

OS: Microsoft Windows 7 Home Premium 64 Bit - £77.63
http://www.scan.co.uk/Products/Windows-7-Home-Premium-64-bit-%28Single%29-OEM

Cooler: Coolermaster Hyper TX3 - £13.68
http://www.scan.co.uk/Products/Coolermaster-Hyper-TX3-3-Heat-Pipe-CPU-Cooler-S775-1156-1366-AM2-2plus-AM3-940-939-954

Optical Drive: Samsung SH-S223C/BEBE 22x DVD±R - £14.91
http://www.scan.co.uk/Products/Samsung-SH-S223C-BEBE-22x-DVDR-12x-DVDR-DVDplusRW-x8-RW-x6-SATA-Black-OEM

Motherboard: Asus M4A89GTD PRO, AMD 890GX - £103.01
http://www.scan.co.uk/Products/Asus-M4A89GTD-PRO-AMD-890GX-S-AM3-PCI-E-20-%28x16%29-DDR3-2000%28OC%29-SATA-6Gb-s-SATA-RAID-ATX

I plan to add a second 5770 in a month or two. I wanted to focus on a solid base of a Motherboard and CPU. Thing I'm most unsure about is the RAM.

 

[Silvune]

If you're not going to overclock then you don't need an aftermarket CPU cooler.

You want to get 4GB as your motherboard uses dual channel memory, so you are likely to have a performance hit by running 6GB in single channel. I recommend this Corsair DDR3 1333mhz 4GB (2x2GB) CMV4GX3M2A1333C9 (9-9-9-24) 1.50V £95 I know that for the price you can get better RAM from ebuyer and probably overclockers.co.uk.

CIT aren't known as being good PSU makers, so unless you can find a review that gives it the thumbs up, then it is advisable to get something more reliable. A good PSU that can deliver ~550W on it's 12V rail(s) will be powerful enough for two 5770s. I suggest this: Seasonic S12II-620 80Plus Bronze £70

I don't know what that HDD is, it doesnt look like it is one of Samsung's fast ones, I could be wrong. Unless I was corrected I would get either of these:
Samsung Spinpoint F3 500GB £40
Seagate Barracuda 7200.12 500GB £39