Hi there. I am totally new at building PCs. I am currently in the process of building a new gaming PC. But before I order all the hardware, I just wanted to get some advice from the forums on whether my PC would work. Main functions I will be using the PC for is hardcore gaming; normal uses (such as word processing, surfing the net, etc.) but also want to try my hand at overclocking. I am not on any strict budget at the moment, as I will be buying the hardware each month and building it up, so I am open to all ideas. Some of the parts I am going to mention are a little uncertain at this point as I don't know whether they will be suitable or not. Ok, so here is the build I hoping to go for - all parts and prices are from a UK based website called overclockers and all include VAT: CPU Intel Core 2 Quad Q9650 LGA775 'Yorkfield' 3.0GHz 12MB-cache (1333FSB) Processor - Retail - £339.49 CPU Cooler Thermalright Ultra-120 Extreme CPU Cooler (Socket AM2/LGA775) - £41.11 (plus I will be buying a 120mm fan to go with it) MOBO (uncertain) Main features I am looking for is the ability for TriSLi, and must be stable enough to overclock on as well. EVGA nForce 780i SLI nForce 780i (Socket 775) PCI-Express DDR2 Motherboard (132-CK-NF78-A1) - £187.99 GPU (uncertain) Point of View GeForce GTX 280 1024MB GDDR3 TV-Out/Dual DVI (PCI-Express) - Retail - £317.24 BFG GeForce GTX 280 OC 1024MB GDDR3 TV-Out/Dual DVI (PCI-Express) - Retail - £323.11 Memory (uncertain) RAM I am totally unsure about at this point. I am unable to find the right RAM to fit the MOBO at the moment. So any help with that would be greatly appreciated. Hard Drives (uncertain) Hitachi Deskstar 7K1000 1TB SATA-II 32MB Cache - OEM (0A35155) - £85.76 Optical Drives Sony NEC Optiarc AD-7201S 20x DVD±RW SATA Dual Layer Lightscribe ReWriter (Black) - OEM - £17.61 PSU (uncertain) Could anyone recommend a good PSU to go with my build. Looking for one at around 1000watts - 1200watts, so that maybe in the future I can run TriSli. Case Main features I am looking for, is good air circulation; a good amount of space to hold GPUs; must also be big enough for easy access to the MOBO, and must be able to fit my MOBO onto. XClio A380Plus Twin Engine Gaming Case - Silver (No PSU) - £76.36 or Antec Twelve Hundred Ultimate Gaming Case - £111.61 or Thermaltake VA7000BWA Shark Aluminium Full Tower - Black - £88.11 OS Not too sure which one to get from these two: Microsoft Windows Vista Ultimate SP1 64-Bit - OEM (66R-02034) - £135.11 Microsoft Windows Vista Ultimate SP1 - Retail (66R-02266) - £184.46 Could anyone also recommend any good anti-virus software that runs quietly in the background. I heard Eset Nod32 is supposed to be good. That's basically the list for now. I am open to all suggestions and criticisms. Any advice, plus money saving tips will also be greatly appreciated. Looking at some of the prices on my list, the total cost of my rig is looking to be about £1000-£1200, so the money saving tips would be hugely appreciated, lol. I would like to say thanks beforehand for taking the time to reading this, plus for any given information. Thanks!