I had to manually set the timings and voltage with mine btw. 4-4-4-15 2T at 2.1v.The E6750 has far superior value for what its worth, better overclocking option compared to the E6550.
If you're going to be OC'ing anyway have you thought about swapping an e2180 in for the e6550 and saving yourself 50 quid?
How about a cheap jetway board ive seen going for 22inc vat a fastest amd run it stock and just buy more games and another hdrive ?

