Would windows 8 increase my performance at all for my build, or should I go with windows 7?

Rand0mUser

Honorable
Jan 24, 2014
25
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10,530
This is my build:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($219.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.99 @ NCIX US)
Motherboard: Asus Z87-PLUS ATX LGA1150 Motherboard ($158.99 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-2133 Memory ($79.99 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Disk ($89.00 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($87.99 @ Newegg)
Video Card: Asus GeForce GTX 760 2GB Video Card ($239.99 @ Microcenter)
Case: Fractal Design Define R4 w/Window (Black Pearl) ATX Mid Tower Case ($122.98 @ Newegg)
Case Fan: Cooler Master R4-L4S-10AB-GP 60.9 CFM 140mm Fan ($8.98 @ OutletPC)
Power Supply: Rosewill Capstone 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($84.99 @ Newegg)
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer ($59.00 @ Amazon)
Monitor: Acer G246HLAbd 60Hz 24.0" Monitor ($148.24 @ TigerDirect)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($32.98 @ Newegg)
Total: $1343.11
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-25 01:01 EST-0500)
 
There is no performance difference between Windows 7 and 8. However, 8 tends to boot up a little faster.

The choice is mainly about which UI you prefer. You can get 8 to act and look a lot like 7 with 3rd party programs, but there will still be differences.