Put together this system using the Intel X79 Sandybridge - E 10300i Configurator - (Workstation & Gaming System)
Specification
Antec 300 Three Hundred Ultimate Gaming Case
Intel Core i7-3820 3.60GHz (Sandybridge-E) Socket LGA2011 Processor - Retail
OcUK H2 Flo Extreme CPU Cooler
Asus P9X79 PRO Intel X79 (Socket 2011) DDR3 Motherboard
Corsair Vengeance Blue 16GB (4x4GB) DDR3 1600MHz C9 Quad Channel Memory Kit
Asus GeForce GTX 560Ti DirectCU II TOP 1024MB GDDR5
Crucial RealSSD M4 128GB SATA 6Gb/s Solid State Hard Drive
Crucial RealSSD M4 128GB SATA 6Gb/s Solid State Hard Drive
OcUK 22x DVD±RW SATA ReWriter (Black)
OnBoard Sound Card
OCZ ZS Series 750W PSU
Fully Cable Managed
Sharkoon 120mm 2000RPM Fan
Main uses:
Processor-heavy modelling and simulation
Play Diablo III or Starcraft II (don't care if not Ultra detail but don't want frame rate drops) whilst streaming in 1080p
Already have:
Windows 7 Ultimate
2xHD monitors
NAS for large file storage
External USB sound card
Just a check that I'm not missing any obvious boosts or disproportionately over-speccing any areas.
After the basic ability to meet my usage requirements, my main concern is that the system is quiet rather than maximally powerful.
Specification
Antec 300 Three Hundred Ultimate Gaming Case
Intel Core i7-3820 3.60GHz (Sandybridge-E) Socket LGA2011 Processor - Retail
OcUK H2 Flo Extreme CPU Cooler
Asus P9X79 PRO Intel X79 (Socket 2011) DDR3 Motherboard
Corsair Vengeance Blue 16GB (4x4GB) DDR3 1600MHz C9 Quad Channel Memory Kit
Asus GeForce GTX 560Ti DirectCU II TOP 1024MB GDDR5
Crucial RealSSD M4 128GB SATA 6Gb/s Solid State Hard Drive
Crucial RealSSD M4 128GB SATA 6Gb/s Solid State Hard Drive
OcUK 22x DVD±RW SATA ReWriter (Black)
OnBoard Sound Card
OCZ ZS Series 750W PSU
Fully Cable Managed
Sharkoon 120mm 2000RPM Fan
Main uses:
Processor-heavy modelling and simulation
Play Diablo III or Starcraft II (don't care if not Ultra detail but don't want frame rate drops) whilst streaming in 1080p
Already have:
Windows 7 Ultimate
2xHD monitors
NAS for large file storage
External USB sound card
Just a check that I'm not missing any obvious boosts or disproportionately over-speccing any areas.
After the basic ability to meet my usage requirements, my main concern is that the system is quiet rather than maximally powerful.

You don't be disappointed (points at signature).