I have included your final selection below and added a couple of comments for you to consider;
The benchmark for the build is synchronous gameplay at 60+ FPS in games such as BF3 and Metro 2033 at maximum settings on a single 24" monitor at 1920x1050 resolution.
Case: Fractal Design Define XL Black = $216.00 AUD
Power Supply: Corsair TX-750 V2 Power Supply = $145.00 AUD
Processor: Intel Core i5 2500K = $229.00 AUD
CPU Cooler: CoolerMaster Hyper TX3 = $25.00 AUD
Unfortunately, I haven't heard good things about standard coolers, so I think I'll be sticking with that EVO cooler.
I do not know what you have heard or read but I can assure you that heatsinks and CPU fans that are bundled with a CPU are more than capable of cooling the processor as they are tested over and above the normal temps that a CPU will be subjected to, there are however two things that can impact this 1: TIM being incorrectly applied 2: Overclocking, you will not apply the TIM incorrectly as you have read this http://www.geekstogo...rface-material/ tutorial so unless you plan on O/Cing the stock HS and fan will suffice, the choice however is yours to make and I only offer guidance here.
Motherboard: ASRock Z68 Extreme3 Gen3 Motherboard = $135.00 AUD
RAM: G.Skill Ripjaws F3-12800CL9D-8GBRL 8GB (2x4GB) DDR3 = $55.00 AUD
Graphics Card: MSI GeForce GTX 580 3GB Lightning Extreme Edition OC = $699.00 AUD
Sound Card: ASUS Xonar DS = $85.00 AUD
See post #2
Solid-state Drive: Corsair Force Series 3 120GB SSD = $199.00 AUD
Optical Drive: Samsung SH-222AB SATA DVDRW Drive = $22.00 AUD
Total: $1994.00 AUD
Keyboard: Steelseries 6G V2 Mechanical Keyboard = $95.00 AUD
Headphones: Audio-Technica ATH-M50 = $184.00 AUD
Microphone: Zalman Microphone ZM-MIC 1 = $19.00 AUD
Monitor: LG E2441V-BN 24inch LED Widescreen Monitor = $169.00 AUD each, $338.00 AUD total
Total: $636.00 AUD
If you were to stick with the stock HS/CPU fan and the onboard audio chip you could use the funds saved to purchase an i7 CPU http://www.newegg.co...N82E16819115095
As ever check the CPU and memory support tabs @ http://www.asrock.co...8 Extreme3 Gen3
to ensure compatibility, I hope that you find this input helpful and I apologise if it makes you indecisive.
Acknowledgment to iammykyl
for advising via a PM that you were looking for a second opinion