I've been lurking for quite a while now and have finally decided I need a new build. I've put together my parts and I just can't come to decision on the power supply. If anyone could give me some input it'd be greatly appreciated. I'll be doing a slight OC to the CPU and want to leave enough juice for crossfire if I decide to go that route down the line. I'm looking for a high quality PSU (preferably ~$100) that will work well with this build. Build: CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory Storage: Samsung 830 Series 128GB 2.5" Solid State Disk Storage: I have additional storage. Video Card: Gigabyte Radeon HD 7870 2GB Video Card Case: Cooler Master RC-692 ATX Mid Tower Case (Picked up for next to nothing) Power Supply: Optical Drive: Lite-On iHAS124-04 DVD/CD Writer I'm looking at a few of the SeaSonic units, namely the SeaSonic 620W 80 PLUS Bronze Certified ATX12V / EPS12V, but don't know if that will be enough power. Please help me decide! Please and thank you!