Please help new building AMD system

For a stock Configuration the stock fans should be good enough in a Lian-Li case they tend to flow fairly well. If you do a Xfire setup though I would recommend putting on new GPU fans cause they get HOT with 2 of those bad boys close together. Your PSU is plenty of juice for a Xfire setup. Outside some different brands I'm building a really similar system same Mobo and Procc though. Just make sure if you plan on an Xfire setup in the future that you have enough PCI-E 6 pin connectors for 2 cards  

Its a pretty nice setup...
But I would suggest these changes...

CPU + mobo
X4 955 + ASUS M4A78T-E AM3
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

G.SKILL Trident 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HDD - Faster WD Black
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Graphics card - Any of these...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

AND definitely this PSU -
Corsair 750TX...Like the above member said, 750W is suffice for 2x HD 4890s...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Have a look at the phenom memory article on this site .

Your ram is fairly expensive and relatively high latency / voltage
You'd be better off with 1333 MHz ram with 7-7-7-18 timings @ l 1.6 volts


Your psu is good but expensive

This one is just as good and not expensive . Your call .
CORSAIR CMPSU-750TX 750W ATX12V is $99 after MIR
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Here's a great deal on a very high quality PSU:

PC Power & Cooling S75QB 750W ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply compatible with core i7 - Retail
http://www.newegg.com/Product/Product.aspx?Item=N82E168... $84.39

Thanks everyone ^^, really appreciate this.
I'll probably change ram and PSU.