New Development machine

[abhidotnet]

I'm considering building a development rig(no gaming) and I'd love to know you guy's thoughts on whether this is a good build both in terms of being performant, cost effective and energy efficient and or whether any additional components are needed

Intel Core i7-930 Bloomfield 2.8GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Desktop Processor BX80601930 ($289)

G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory Model F3-12800CL9T-6GBNQ
+
GIGABYTE GA-X58A-UD3R LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard --- Combo Deal ($300)

RAIDMAX Quantum ATX-798WB Black SECC ATX Mid Tower Computer Case ($49.99)

CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply
($69.99)

ASUS CuCore Series EAH4850 CUCORE TOP/2DI/1GD3 Radeon HD 4850 1GB 256-bit DDR3 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card ($84.99)

Western Digital Caviar Blue WD10EALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive($69.99)

Sony Optiarc 24X DVD/CD Rewritable Drive Black SATA Model AD-7240S-0B - OEM ($19.99)

Total:$813.96

I might do some overclocking but not quite sure as to how to do so.
The I930 comes with a stock heatsink and fan and I wonder whether I need to buy a better heat sink such as the Cooler Master Hyper 212 Plus for overclocking or whether the stock one will do fine.
It's a little spendy($49.99 on newegg)

 

[batuchka]

$703AR?

If you apps take no advantage of GPU acceleration config is sweet as is else could be a professional class GPU would net u most gains ^^