That's a strange setup.
Some of the parts sounds like they were put together by a knowledgeable person: overclocking & a water cooled CPU.
Some specs seems strange to me, such as the dual EVGA 650Ti cards combined with, what seems to me to be, a marginal power supply, the Corsair CX750 PSU. This power supply would not be my choice for
TWO video cards that require "400 watt or greater power supply"
EACH. Add the overclocked CPU power requirements, easily over 100 watts when stressed, and it starts to get too much.
(Side note - the Corsair CX750 PSU only seems underpowered for this system)400 watts X 2 = 800 watts. 800 watts +110 for the CPU =
900+ watts (wattages from Newegg & Toms Hardware).
And that doesn't factor in the power requirements for the mother board, memory, hard drive, etc.And then you get to the memory; "Memory: Corsair XMS3 16G (2x8G) DDR3 1600Mhz".
Is this Windows 7 Home BASIC? 32bit or 64 bit?Windows 7 Home Basic 32 bit max = 4 GB
Windows 7 Home Basic 64 bit max = 8 GB
64bit Windows 7 Home Premium is better off.Windows 7 Home Premium 32bit max = 4 GB
Windows 7 Home Premium 64 bit
max = 16 GBSo if the OS is 64bit Windows 7 Home Premium, then you're ok in that department.
OPTIONSHave you considered re-using your old case and building your own computer from parts? I think that you can do better if you go that way.
Newegg is a great place to start off by reading reviews from others (although some of the negative reviews are from idiots).
Pricewatch.com is a great place to find great prices on components.
TigerDirect can be another good site, especially for a "barebones" system
If you're not all that hot on picking out the parts & putting it all together you could buy a "barebones" system. Barebones
usually are a case, power supply, and motherboard. They may come with CPUs, memory, and graphics cards.
They don't usually come with hard drives. Many people install their old drive as a way to save money on both drive and operating system. If your old drive isn't so hot, you'll have saved enough money that you can buy a better one.
This one may, or may not be a good deal, I'm just showing you a sample. $509.99One last thought - I would much rather buy a reconditioned (returned) computer with 64bit Windows 7 Pro, than ANY new computer with Windows 8.
Good luck.