With this PC setup would i need to buy a fan to cool the CPU, GPU, or motherboard? Or are the ones that come with the case enough?
Motherboard: ASRock Z68 Extreme3 Gen3 - $121.99
CPU:Intel Core i5-2400 3.10 GHz - $189.99
RAM: Corsair XMS3 8 GB (2 x 4GB) - $47.99
Graphics processing unit: SAPPHIRE AMD Radeon HD 6870 - $169.99 minus $20 rebate
Hard Drive: Western Digital 1 TB Caviar Green SATA II - $101.45
Optical Drive: Sony Optiarc AD7280S-OB - $17.99
Case: Raidmax Altas ATX Mid Tower Case - $54.99
Power Supply: Corsair Builder Series CX600 600 watt - $59.99
The Raidmax case has a rebate in case you did not notice. $34.99 after rebate.
I'll let others answer the fan question.