New Gaming Rig Build ( Finishing touches )

Hi there, quite new around here! I just recently decided to get a new rig because my laptop no longer plays games =(
Here are the specs:
CoolerMaster HAF 922 Case
CoolerMaster GX Power 650Watt PSU
ASUS P6X58D-Premium X58 LGA 1366 DDR3 Motherboard
Intel Core i7-950 3.06Ghz CPU
PQI 6GB Kit DDR3 1333 RAM
Hitachi 3.5" 1TB SATA HDD
ASUS 1GB RadeonHD 5850
LG SATA DVD RW
TP-Link TL-WN951N 300M Wireless-N Network card
Logitech G110 Gaming Keyboard
Cyborg R.A.T 7 Gaming Mouse

Excluding the mouse, the total cost was around $1300 AUD. I'm not sure if I should get a CPU cooler. I was advised to just use the stock one as it is a new system and should be fine if I don't OC.

Whatcha guys think? Thanks for any advice

 

I would say that it's a quite cool machine. A HD5870 would be more appropriate, though.

 

Yea I know, but it cost quite a bit more......my budget is $1500......and I'm dishing out $200 on an Acer G245 Hbmid Black 24" 5ms HDMI Widescreen LCD...... =( The cheapest 5870 available around here cost almost $400....... almost double the cost of 5850......so i hope it'll do for now =(