Tweaked for Green Gandalf to add a monitor and speakers:
http://www.cyberpowersystem.co.uk/system/gamer_infinity_600/detail
Note that you must use this link to get the total listed here. Configuring a more expensive base-system will yield a higher overall cost. This business appears to charge a cost-to-build by equating a percentage of the base cost.
Core Components:
* Case: Coolermaster Elite 330 Mid Tower 420W Black
* Light & Illumination: None
* Extra Case Fan Upgrade: None
* Power Supply Upgrade: Standard case power supply (this should be fine)
* CPU: C2D E8500 3.16GHz 1333FSB 6MB L2
* Overclocking Service: No overclocking
* Cooling Fan: Thermalright Ultra 120 Extreme CPU Cooler
* Motherboard: EVGA nForce 780i SLI Mainboard FSB1333 DDR2 3 x PCIe x16 SATA RAID w/ USB2.0, IEEE1394, 7.1 Audio
* Memory: 3GB G.SKILL Value Select or Major Brand
* Video: NVIDIA GeForce GTX260 896MB 16X PCI Express
* Video Card 2: None
* Video Card 3: None
* Monitor & LCD: Samsung SM2032BW 20" 2ms Wide LCD DVI Display Monitor
* Hard Drive: 500GB SATA-II 3.0Gb/s 16MB Cache 7200RPM HDD
* Data Hard Drive: None
* Hard Drive Cooler: None
* Optical Drive: Sony Dual Format 20X DVD±R/±RW + CD-R/RW Drive Dual Layer
* Optical Drive 2: None
* Sound: (Onboard, none selected) High definition on-board 7.1 audio
* Speakers: Logitech X-240 2.1 Configuration Speakers System
* Networking: (Onboard, none selected) 2x gigabit ethernet
Software & Services:
* Microsoft® Windows XP Home w/ Service Pack 3 (XP, unless you really want Vista)
Accessories:
* Logitech PS/2 Keyboard (Black)
* Logitech Optical PS2 Mouse (Black)
* INTERNAL 12in1 Flash Media Reader/Writer (Black)
£862.00 ex. VAT
£991.30 in. VAT
You can squeeze a little bit more money by getting a different heatsink. I also didn't specify any additional fans (pointless) or glow/lights. The question I always ask is: do you want a computer or a glow-in-the-dark vacuum cleaner?
I would also recommend an additional £70 for the Antec case. These are in my opinion the best (quietest!) cases around.
I skimped on the memory (3GB should be enough) to keep it close to £1000 after VAT.
Highlights:
* C2D 1333Mhz bus CPU (plenty of wiggle-room for upgrades)
* Silent CPU sink
* Super DVDRW/CDRW optical drive
* Onboard 2x gigabit ethernet
* Onboard high-definition 7.1 audio
* Plenty of USB ports
* Motherboard is SLI-compatible
Warranty:
Rely on OEM not builder warranty: The EVGA motherboard comes with a lifetime warranty but must be registered with their respective OEM within 30 days:
http://www.evga.com/support/lifetime