First of all - hello! This isn't a completely new build. I'm looking for advice on what I should go for in terms of upgrading my existing system. I will edit this post a little later when I'm at home and can check the other components. It's not a system I built myself - I bought it at a local computer fair. If you guys need a budget in mind for making suggestions then I'll need to have a think - I'll only be buying one component to start with - whichever gives me the greatest performance boost for gaming (which I assume would be the graphics card). Beyond a new GFX card, I'm looking to either extend the life of my system or possible scrap it altogether and get a new system and put the new card in it (alone or buy a system with the same card and run them in crossfire/SLI). A key question is whether or not my processor can last me much longer by overclocking it, or if I should consider a new mobo and go for i5 or i7. If overclocking is the way to go, would a new case/board be required? I'll let you see what I've got at the moment and I can answer any other questions or fill in any gaps when I';m back home later this evening (I don't know offhand what my case or PSU are). Budget: Minimum of £320 (I've been looking at a Radeon HD 5870) but in total I can go higher over several months Main uses of intended build: Gaming Parts required: At the least, a new graphics card. Previous build information (list details of parts): CPU: Intel Core 2 Quad Q9550 2/83GHz Memory: 4GB DDR2 RAM (will update with the speed later) Motherboard: Asus PK5PL-C/1600 GFX: nVidia 9600GT 1024MB Monitor: Dell SP2309W HDD: 1TB SATA Case: ATRIX 9006-C4 Black Midi PSU: 520W Monitor resolution: 2048 x 1152 Storage requirements:Nothing specific. I'm not really interested in SSD's at the moment will you be overclocking: Most likely Any motherboard requirements (no. of USB, Xfire/SLI, fan headers): I'd like the option of eventually having two graphics cards Extra information about desired system: What I'm really after is recommendations of upgrades. For example - get a Radeon HD 5870 to replace the nVidia 9600GT and overclock the CPU to 3.4 - this will last you another 18 months, at which time you should consider a Core i7 system and another HD 5870 running in crossfire with the other one. or just go for a lighter card upgrade such as a 5850, and upgrade your processor now as well. I'm basically unsure of how capable my current CPU is.