Final parts/compatibility check please!

Thanks to everyone who has helped me put my rig together, I really appreciate it. I will be ordering tonight, so if some of you could have a look over and check if this all works, I will place the order. The main issue is if the PSU will be sufficient, as I had a modular OCZ 700W picked before, but it is sold out, so I had to go with the 600W modular instead.

COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case - Retail

GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard - Retail

AMD Phenom II X4 945 Deneb 3.0GHz Socket AM3 95W Quad-Core Processor Model HDX945WFGIBOX - Retail and OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Dual Channel Kit Desktop Memory Model OCZ3RPR16004GK - Retail COMBO

XFX HD-487A-ZHFC Radeon HD 4870 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Retail

Western Digital Caviar Black WD6401AALS 640GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive - OEM

OCZ ModXStream Pro OCZ600MXSP 600W ATX12V V2.2 / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC ... - Retail

SAMSUNG DVD Burner Black SATA Model SH-S223L LightScribe Support - OEM

Very nice build! however in the future you will definitely want to upgrade your motherboard to another with 2 PCIe x16 slots for Crossfire or SLI when the drivers are mature enough.