Things that are (pretty much) set:
Intel® Xeon® Processor E5-2603 (low latency)
Intel® SSD 330 Series 120GB 2.5″, 25nm (sata 3.0)
ASUS GeForce GTX 660 2GB PhysX CUDA (pcie 3.0)
Logitech Keyboard K120 (classic look)
Logitech Mouse M90 (classic look)
USB-stick: Transcend JETFLASH 760 4GB USB 3.0
Webcam: Sony EyeCreate Camera (low latency, high fps)

Things that may change:
Cooler Master Silencio 550 Midi Tower | mainpoint quietness
Corsair H70 Cooler + 2x SP120 Quiet (? – need to look closer into this) | mainpoint quietness.
Cooler Master Silent Pro Gold 600W PSU | mainpoint quietness and enough power for the rest.
Asrock x79 extreme 3 Mainboard (usb3) | Mainpoints usb3, and 2603 support + nice o/c (particulary ram) options.
Hewlett Packard 4GB DDR3-1333 NECC UDIMM 1x4GB PC3-10600 DDR3-1333 nonECC Unbuffered DIMMs F/ DEDICATE WORKSTATION LB435AA | mainpoint 4GB lowlatency, which seems to mean one piece, udimm and non-ecc. (overclockability?)

Peace Be With You.