We had high hopes for the overclocking section but ran into some serious snags with the Gigabyte Z68AP-D3 motherboard, regardless of any voltage settings we tried. We maxed out at 4.65ghz which wasn't too impressive.
We decided to try a different motherboard – the Asus P8P67 Deluxe. We updated to the newest bios.
We used the settings above to get a stable 5ghz clock, on air cooling with the ThermalTake Frio OCK. Our 2600k processors generally capped out around 4.8ghz with air cooling.
Above, the ASUS system with the Core i7 2700k @ 5 ghz with decent air cooling. System validation is available here.
We tried to push it further, and managed to post at 5.2ghz, although the system wasn't completely stable and would blue screen when running SiSoft Sandra tests. Upping the voltage past 1.5 didn't work either, causing temperatures to spike at 90c+. More substantial cooling would be required.
£10 is great. I wish AMD had kept true to the FX name and released a new class leader. but they got it all wrong. ah well……