Build for $3000NZ

Hi I am building my first computer and i have come up with a good idea what parts i want to use and I was wondering if people could give me their thoughts, also im stuck for which graphics cards or cards to use. The system is specd to run high end gaming and will be used for it alot, not top of the top but close enough to what i need.

Current build:

Motherboard :Gigabyte GA-EX58- Intel X58 ATX
:$598.48

Cpu : Intel Core i7 920 2.66GHz quad core CPU Socket LGA1366
:$499.49

Memory CZ Platinum Series Low-Voltage DDR3 PC3 14400 1.8GHz Triple Channel Kits 6GB 3X2GB
:$231.84

Graphics : ATI Radeon HD 4890 1GB graphics cards on crossfire
:$644
or :ATI Radeon HD 4870 1GB Graphics cards on crossfire

Hard drive : Western Digital Caviar GP 1TB SATA 32M hard drive
:$133.30

Case : Antec Nine Hundred Tower Gaming Case
:$198.00


Power supply :850 Watt PSU, ATX
:$202.44

Dvddrive :Samsung SH-S223F SATA 22X DVD-R/+R Dual Layer Writer Black OEM
:$49.49

Screen : Viewsonic VX2433WM 23.6" 1920x1080 2ms Hdmi
:$351

pconlineshop often has lower advertised prices but they rip for freight and often wind up expensive .

Use www.pricespy.co.nz and once you have a list ask for quotes on the package from local outlets .

Well if 4890's are in the budget buy them , since they are more powerful .
But having said that most people will game just fine with a single 4890 on that resolution

You wont need an 850 watt psu . You will need a good quality 750 watt for a pair of 4890's

Soon intel i5 will be released , and AMD's 58XX gfx cards are almost with us . Wait a month if you can