The F3 is cheap fast and quiet. Plus gives you 1TB, vs the 500gb of a WD black. The F3 is reliable and actually proves to be able to keep on par in benches with the Blacks. However it really doesn't matter because any modern decent speed HDD will perform the same in reality. Since they'll always just spin at 7200RPMs and it's not like an SSD.
Love the fact your going down the AMD route. Keep it up its a decent system just make sure you check your motherboards manufacturer listing for supported CPU's. It makes a huge difference in core stability. Dont complicate stuff you know what you want and need it looks like. let us know how the system runs for ya. oh one thing to add. Faster ram equals faster tab access....and if you can afford it. Throw in a few extra bucks and get a better Case. Makes a world of difference when setting stuff up.
Mobo - MSI P67A-C43 (B3) LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard (Model67A-C43 (B3))
Case - Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case, comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm Fan, 1x Rear 120mm Fan, option Fans-2x Side 120mm Fan (Model:CHALLENGER)
PSU - Antec EarthWatts EA-650 GREEN 650W ATX12V v2.3 SLI Ready CrossFire Certified 80 PLUS BRONZE Certified Active PFC Power Supply (Model:EA-650 Green)
RAM - G.SKILL Ripjaws X Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL8D-4GBXM (Model:F3-12800CL8D-4GBXM)
HDD - Seagate Barracuda ST31000524AS 1TB 7200 RPM SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive (Model:ST31000524AS)
Other - BYTECC 6 ft. 18AWG Power Cord w/ 3 Conductor PC Power Connector – Black Model POWERCORD-6K (ModelOWERCORD-6K)
Graphics Card - SAPPHIRE 100312-3SR Radeon HD 6950 Dirt3 Edition 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity