Salutations from Down Under! After much thought, I have come to the conclusion that I need a new computer. Thoroughly agitated by the expense of pre-built 'high-end' machines, I have decided that I will take the plunge and build the computer myself. After living with a Compaq Presario SR1710AN for several years now (1.8GHz processor anyone? ), I have futhermore decided for it to be somewhat of a powerhouse (at least by my standards). So, without further ado I present to you the specifications: (Case) Gigabyte Poseidon 310 (Black) (Motherboard) Asus P5N32-E SLi (CPU) Intel Core 2 Quad Q6600 2.40GHz (Memory) 4GB Corsair TwinX PC6400 DDR2-800 C4 (4x 1GB modules) (Hard disk) 2x Seagate 500Gb SATA HDDs (Graphics) 2x Leadtek nVidia GeForce 8800GT 512Mb (Optical drive) ASUS 1814BLT SATA (Monitor) BenQ FP222W-B Widescreen LCD Monitor Those of you who haven't gone 'tl;dr' or 'Another build thread?!' have probably noticed that I am lacking a PSU. A 'friend' (more like an acquaintance) of mine told me that I'd need at least a 900W PSU, but I however think that something lesser will suffice. Additionally, I haven't decided on cooling yet. The Poseidon supports water cooling, so my options are open. Ideally, I'm looking for the best 'choice' in a system like this. Also bear in mind that I may eventually wish to overclock a few components. To summarise what I am asking, > Will this 'build' work? (And are there any noticeable flaws/better options), > What degree of wattage will my PSU require to power this 'rig', and > Is water cooling necessary, or would air cooling be a better idea? If all goes well, you may even see a case mod for my new PC in the near future. Many Thanks.