Having previously built two office PCs, this was my first gaming build.
My main aim was for it to be fast enough for HD gaming but relatively cool and quiet, hence the CPU is not overclocked, and the front fan is disabled as this contributed the most noise. It runs games like Skyrim and Modern Warfare 3, with high settings, and no noticeable slow down.
Since building this last year, I have upgraded to Windows 8 Pro, with a Logitec K400r wireless keyboard, which suits its additional use as a multimedia PC, hooked up to an LG Flatron M2780D TV.
To make up some additional illumination I added a Lian Li LED50-R inside from Overclockers.co.uk.
The only difficulty encountered with the build was connecting the front USB 3.0 ports. A suitable adapter was hard to find in the UK but finally found from Scan.co.uk who had to restock before it became available.
Update: added a BitFenix Alchemy 4-Pin ATX12V Extension from Overclockers.co.uk so the ATX power lead does not have to cross the processor fan.
Update: added another Sapphire Radeon HD 7850 in a Crossfire configuration and front fan re-enabled for extra cooling. Now hooked up to a 28" Asus PB287Q LED 4K UHD Monitor and with a Keysonic KSK-6001UELX Compact Gaming Keyboard.
Update: upgraded RAM to 16 Gb with an 8GB (2x4GB) Corsair DDR3 Vengeance kit. Replaced the hard drive with a 3TB Western Digital WD3003FZEX Black, suitable for HD video capture with the BLACKMAGIC Intensity Pro card, and system drive is a Sandisk Ultra Plus 256 GB. Replaced the CPU cooler with a Cooler Master Seidon 120V, so CPU is now overclocked to 4.4 GHz. Removed the red LED strip and replaced the front fan with a Cooler Master MegaFlow 200 LED - Blue inline with a Dynamode 3 Pin Fan Speed Reduction Low Noise Cable.