Power Supply: CORSAIR Builder Series CX430 V2 430W ATX12V v2.3 80 PLUS Certified Active PFC Power Video card: SAPPHIRE 100315L Radeon HD 6850 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity Processor: AMD Athlon II X3 450 Rana 3.2GHz Socket AM3 95W Triple-Core Desktop Processor ADX450WFGMBOX Motherboard: BIOSTAR A880G+ AM3 AMD 880G HDMI Micro ATX AMD Motherboard 4 gb of RAM. So this computer (along with a few other things ex. monitor, case, dvd burner etc.) cost me about 600 dollars. I've really had no problem running games but I get to Assassins Creed Brotherhood and my computer starts lagging? Also if you need any more info about my PC just ask.