Super fast and quiet PC ?

Intel core duo 8400 3 GHz CPU with 6Mb cache with Scythe Shuriken low profile quiet CPU cooler 4 Gb Crucial DDR3 RAM CT2KIT25664BA1339A Super fast OCZ 60 GB Agility 3 Solid State HDD. Run programmes at incredible speeds. Loaded with 64 bit Windows 7 Professional, Open Office, Anti-virus, and back-up software. Nvidia Geforce 8800GT 512Mb graphics card. Dual DVI and will display to HDMI TV with correct cable and adapter. Seagate Barracuda 500 Gb SATA II HDD for data storage. 70Gb backup-drive. This machine has been used for high quality audio recording and gaming and is being sold only due to emigration. Gigabyte G41MT-S2P micro-ATX motherboard (4 Gigabit LAN, on-board graphics, 6 USB ports, front audio). Samsung Writemaster SATA DVD writer X-case own branch midi tower with 2 120mm case fans and 550 Watt power supply Gigabyte keyboard and mouse Legitimate Windows 7 professional installation disk and licence code. Can be seen working. The only problem is that the rear headphone jack on the motherboard is not working, However the front one works fine. £300 ono