I am going to build a new computer that I intend to watercool later on, when I see that everything works and when I muster the courage. Watercooling is to reduce noice. It will be bought in Europe so don't bother with small differences in cost. Before buying I would very much appreciate feedback in case I have chosen parts that don't match or that have unnecessary bottlenecks (sorry for eventual puns with respect to the watercooling... )
Screen: DELL U2711 ULTRASHARP 27# WIDE TFT TCO-03 BLACK (I want to edit several documents at the same time + use it for video display).
Case: CORSAIR FULLTOWER OBSIDIAN 800D EATX BLACK (I want the window, and I presume that 140 mm fans are more silent than 120 mm fans).
Motherboard: ASUS P6TD Deluxe, X58, Socket-1366 (comments on the socket?)
Intel Core™ i7 Quad Processor i7-930 Quad Core, 2.8Ghz, Socket 1366, 8MB, 130W, Boxed w/fan
Graphics Card: PowerColor Radeon HD 5870 1GB GDDR5 PCI-Express 2.0,"PCS+", 2xDVI-I, HDMI, DisplayPort
Memory: Corsair XMS3 DDR3 1333MHz 6GB CL9 Kit w/3x 2GB XMS3 modules, CL9-9-9-24, for Core i7
Power: Corsair HX 750W PSU
HD 1: WD VelociRaptor® 600GB SATA 10000RPM, 32MB, 3,5", 6 GB/s
HD 2: WD Caviar SE16 500GB SATA2 16MB 7200RPM
Lite-On Blu-Ray Reader IHOS104-37
Saitek Eclipse Keyboard, Blue light
Speakers: Logitech Z523 Dark
Mouse: not decided yet...
Microsoft Windows 7 Home Premium 64bit (It will not be used as a server)
First, switch that board to either the Gigabyte GA-X58A-UD3R or the Asus P6X58D-E. These are more future proof with USB 3/SATA III support.
Second, ditch the WD HDDs. The Samsung Spinpoint F3 and Seagate 7200.12 (500 GB or 1 TB) are both faster than than the Caviar. The VelociRaptor is faster, but it's too expensive. I'd suggest getting a 128 GB SSD in its place for about $350-375. A SSD will be an order of magnitude faster.
Finally, I would ditch the Corsair Dominators. Corsair's sticks are usually very expensive, especially their dominators. Instead, find the cheapest set of 1600 mhz CAS Latency 7 sticks you can find. Or pick up the Mushkin Enhanced Redline 1600 mhz CAS Latency 6 sticks. They're the fastest available today.
Many thanks for the extremely fast comments MadAdmiral! I am very impressed.
I will switch to;
MB: Gigabyte GA-X58A-UD3R, X58, which is slightly cheaper than ASUS P6X58D-E X58 S-1366 MATX where I buy it. HAd to read a little and I cannot see much difference between them (Gigabyte seems sligtly better at a quick glance).
HD 1: KINGSTON V+ DRIVE 128GB SSD SATA/300 MLC KIT
HD 2: SAMSUNG SPINPOINT F3 1TB SATA/300 7200RPM 32MB*