I5 3570K with Gigabyte GA-Z77X-UD3H Overclockable?

[jokimazi]

I am planning on buying this build in beginning of August and get another the same GPU in September.
Is it worth OC and how far should I push it? Should I change to different motherboard or anything else? Basically, any improvements from which OC would benefit or any improvements to avoid OC?

This is purely for gaming.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor (£176.78 @ CCL Computers)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£26.65 @ Scan.co.uk)
Motherboard: Gigabyte GA-Z77X-UD3H ATX LGA1155 Motherboard (£119.75 @ Amazon UK)
Memory: Kingston HyperX Grey 8GB (2 x 4GB) DDR3-1600 Memory (£40.82 @ CCL Computers)
Hard Drive: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£62.52 @ Scan.co.uk)
Hard Drive: Crucial M4 128GB 2.5" Solid State Disk (£84.99 @ Amazon UK)
Video Card: EVGA GeForce GTX 670 4GB Video Card (£390.80 @ Scan.co.uk)
Case: NZXT Phantom 410 (White) ATX Mid Tower Case (£78.48 @ Scan.co.uk)
Power Supply: XFX 750W ATX12V / EPS12V Power Supply (£82.99 @ Overclockers.co.uk)
Optical Drive: Sony AD-7280S-0B DVD/CD Writer (£12.96 @ CCL Computers)
Total: £1076.74
(Prices include shipping and discounts when available.)

 

[nna2]

i would shoot for 4-4.5 GHz depending on what you can get temp wize

you might see some improvement, but its a pretty new chip, so it would be good stock anyways

 

[DeusAres]

If I were you I'd be a little more conservative. Go for 4.2 GHz, especially with that heatsink. And the board will overclock just fine. If you wanted, you could easily push it to 4.5 GHz.