New PC Build Critique

[Arander]

I've been out of the PC hardware scene for quite awhile, so I'm not up to date on what's new, what's good, etc...

My brother knows a bit more, and he put a part list together as I'm looking at putting a new PC together for some gaming. Here's what he came up with:

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($219.99 NCIX US)
CPU Cooler: Xigmatek LOKI SD963 52.0 CFM CPU Cooler ($19.99 Newegg)
Motherboard: ASRock Z75 Pro3 ATX LGA1155 Motherboard ($84.99 Newegg)
Memory: Crucial Ballistix 8GB (2 x 4GB) DDR3-1866 Memory ($53.99 Amazon)
Storage: Mushkin Chronos 120GB 2.5" Solid State Disk ($89.99 Newegg)
Video Card: EVGA GeForce GTX 670 2GB Video Card ($368.00 Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($51.00 Newegg)
Power Supply: SeaSonic 620W ATX12V / EPS12V Power Supply ($89.99 Newegg)
Total: $977.84
(Prices include shipping and discounts when available.)
(Generated by PCPartPicker 2012-08-27 13:44 EDT-0400)

Anyone able to critique the build and let me know some pro's and cons? I'll be canabalizing my old PC for the hard drive, optical drive which is why those items aren't on there.

WoW and Mechwarrior Online will probably be the primary games I use this for, but I'm sure I'll find some other ones that I'll want a good system for.

[chaud]

You could go with DDR3 1600 if you wanted, bandwidth will still be plenty. Other than that it looks okay.