I currently have had this PC for 2 1/2 years running Hyperthreading and Dual DDR mode. Intel P4 3ghz 512K cache SK478. Abit IS7 800FSB DDR400 Memory 8x AGP Mobo. 1gb (2x512mb) Samsung 512 Pc3200 DDR400 Mem. Hercules 128mb Radeon 9800 Pro. Sata HD, DVD RW, Case, Power etc etc. Is it worth putting a new AGP graphics card in or upgrading for about £400-450? Are the Dual core processors really worth it? Or should I just get a faster AMD 64? The 3800 is half the price of the X2 version. I'm looking to play UT2007 without everything turned off! Any advice?