Good over clocker?

Minimu you can get away with, this will definitely get you 4.2GHz, possibly 4.4GHz.

PCPartPicker part list: http://pcpartpicker.com/p/1xQ0B
Price breakdown by merchant: http://pcpartpicker.com/p/1xQ0B/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1xQ0B/benchmarks/

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($219.98 @ Outlet PC)
CPU Cooler: Xigmatek GAIA SD1283 56.3 CFM CPU Cooler ($24.99 @ Newegg)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($124.99 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($67.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($89.99 @ Amazon)
Video Card: Asus GeForce GTX 760 2GB Video Card ($259.99 @ Amazon)
Case: Corsair Carbide Series 300R Windowed ATX Mid Tower Case ($65.99 @ NCIX US)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($55.99 @ NCIX US)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.98 @ Outlet PC)
Total: $926.89
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-29 23:11 EDT-0400)



THIS will likely get you 4.6GHz with a 3570K.

PCPartPicker part list: http://pcpartpicker.com/p/1xQ31
Price breakdown by merchant: http://pcpartpicker.com/p/1xQ31/by_merchant/
Benchmarks: http://pcpartpicker.com/p/1xQ31/benchmarks/

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($219.98 @ Outlet PC)
CPU Cooler: Noctua NH-D14 65.0 CFM CPU Cooler ($73.99 @ Amazon)
Motherboard: ASRock Z77 Extreme4 ATX LGA1155 Motherboard ($124.99 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($67.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($89.99 @ Amazon)
Video Card: Asus GeForce GTX 760 2GB Video Card ($259.99 @ Amazon)
Case: Corsair Carbide Series 300R Windowed ATX Mid Tower Case ($65.99 @ NCIX US)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($55.99 @ NCIX US)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.98 @ Outlet PC)
Total: $975.89
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-29 23:13 EDT-0400)