I have absolutely no idea how it came up to be this expensive. I took about 2 minutes picking parts (they don't have a big choice btw) and came out with something.
Look at this:
Case STYLISH PIANO BLACK FUSION CASE inc. 2 FRONT USB
Processor (CPU) AMD PHENOM II X2 550 SOCKET AM3 (3.10GHz/6MB CACHE) - BLACK EDITION
Motherboard ASUS® M4A78LT-M LE: DDR3, S-ATA II, 1 x PCIe x16, 1 x PCIe x1, 2 x PCI
Memory (RAM) 4GB CORSAIR DDR3 DUAL-DDR3 1333MHz - LIFETIME WARRANTY!
Graphics Card 1GB ATI RADEON™ HD 5770 PCI EXPRESS - DirectX® 11
2nd Graphics Card NONE
Memory - 1st Hard Disk 640GB WD CAVIAR GREEN WD6400AARS, SATA 3 Gb/s, 64MB CACHE
2nd Hard Disk NONE
RAID (HDD 1 & 2) NONE
1st DVD/BLU-RAY Drive NONE
2nd DVD/BLU-RAY Drive NONE
Memory Card Reader INTERNAL 52 IN 1 CARD READER (READS XD, MS, CF, SD, etc)
Power Supply & Case Cooling CORSAIR 650W PSU (TX650) 80+ ULTRA QUIET (£69)
Processor Cooling STANDARD AMD CPU COOLER
Sound Card ONBOARD 8 CHANNEL (7.1) HIGH DEF AUDIO (AS STANDARD)
Network Facilities ONBOARD 10/100/1000 GIGABIT LAN PORT
USB Options 4 x USB 2.0 PORTS @ BACK PANEL (MIN 2 FRONT PORTS) AS STANDARD
Modem NONE, I WILL BE USING BROADBAND
Floppy Disk Drive NONE
Firewire & Video Editing NONE
TV Card NONE
Operating System Genuine Windows 7 Home Premium 64 Bit - inc DVD & Licence (£79)
Office Software FREE 60 Day Trial of Microsoft® Office® 2007 Professional Edition
Anti-Virus MICROSOFT SECURITY ESSENTIALS - Free Basic Protection
Monitor NONE
2nd Monitor NONE
DVI Cable NONE
GeForce 3D Vision NONE
Keyboard & Mouse NONE
Mouse NONE
Speakers NONE
Webcam NONE
Headsets (VOIP) NONE
Surge Protection NONE
Printer NONE
External Hard Drive NONE
Home Installation NONE
Warranty 1 Year Return-to-Base incl 1st Month Free Collect & Return
Delivery STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time Standard Build - Approximately 7 to 9 working days
Quantity 1
£532.77 ex VAT.
£626 inc VAT and Delivery.
And it's a very good multimedia computer that will handle top notch games.
I'm not sure about quality and noise since they don't mention for example companies making these video cards but generally this model is very good (above mid-end).
Oh and I suggest getting a PC display elsewhere. This one is very nice if you want full HD:
Samsung P2350 23" Wide High Definition LCD Monitor: Amazon.co.uk: Electronics & Photo
And this one if you don't:
http://www.amazon.co.uk/Samsung-SM2...5?ie=UTF8&s=electronics&qid=1270752307&sr=1-5
You absolutely don't have to worry about image sharpness and such. The second one is probably a bit superior if it comes to image quality alone (and 16:10 is more comfortable to work with than 16:9).