CPU: i5 2500
MB: Gigabyte GA-Z68MA-D2H-B3
RAM: any brand cheapest 2x 4GB ddr3 1.5v
Video Card: MSI N560GTX-Ti Twin Frozr II or any GTX 560 Ti you like
PSU: Antec HCG-520 520w
Case: Cooler Master HAF 912 or Antec Three Hundred Illusion
DVD/Bluray + HDD
http://whirlpool.net.au/wiki/rmp_sg_whirlpoolpcs_gaming_configs_1
Try this web site. Their gaming/multi configs are pretty good.
But they are in oz dollar. But I suspects the price would be different but parts are ok.
They are pretty close to what Tom hardware forum typically.
If you are not overclocking ie not using 2500k, why don't you use the intel cooling fan?
I like their:
$1,000 ($1,350) Intel Gaming Config
CPU: Intel Core i5 2500K $219
Mobo: Asrock Z68 Extreme3 Gen3 $129
RAM: 8GB (2x4GB) DDR3-1333 $42
HDD: Seagate Barracuda 1TB $99
GPU: 1.25GB Nvidia Geforce GTX560 Ti 448 Core $299
Case: Sharkoon T5 Value Black Case USB 3.0 $59
PSU: Antec High Current Gamer 520W $79
ODD: DVD burner $21
CPU HSF: Coolermaster Hyper 212 EVO $39