I am building a new machine and need some technical answers. Pentium 4, 3.0GHZ HT Prescott Gigabyte GA-8IPE1000G ATX Intel Motherboard 2X Kingston ValueRAM 512MB 184-Pin DDR SDRAM ATI Radeon X800 Pro 256MB (already purchased for 80, good deal?) Western Digital Caviar SE 250GB 3.5" SATA 3.0Gb/s Rosewill TU-155 Black 0.8mm SECC Steel ATX Mid Tower Computer Case Rosewill ATX12V 400W with P4 support Power Supply ZALMAN CNPS7000B-ALCU 92mm 2 Ball Cooling Fan First of all, is the memory good enough, or should i go with something such as Corsair? What is the difference anyways between Corsair and others? Also, the case comes with a 400W power supply. Is this adequate for all the stuff I have listed, or should I go with something different? Also, with a 3GHZ Prescott, how high could it conceivably be overclocked, and what would be a good number to overclock it to if it were on 24/7? Thanks a lot for your input, this is the best computer forum and site I have been too. Everyone is really cool and not elitist about helping people.