QX6700 (2.66GHz, 8mb Cache, Quad Core, 1066FSB (266FSB x 10 Unlocked Multiplyer)) (Kentsfield) - £250.00 Ebay - New
QX6800 (2.93GHz, 8mb Cache, Quad Core, 1066FSB (266FSB x 11 Unlocked Multiplyer)) (Kentsfield) - £213.00 Ebay - Used
QX6850 (3.00Ghz, 8mb Cache, Quad Core, 1333FSB (333FSB x 9 Unlocked Multiplyer)) (Kentsfield) - £330.00 Ebay - New
It would appear that my options are ... well limited.
The E8400 is the same as the E6850, but with more Cache a lower die size and £25 cheeper.
The E8600 is just silly prices compared to the E8500
Q6600 and Q6700, well if I can't buy them, they won't run very fast.
QX6700 and QX6850 are silly prices for a last gen CPU (for this cost I might as well, start the upgrade to i7-920).
QX6800 I can't find new (or atleast from a reseller I have an account with), I don't think I will ever buy a CPU 2nd hand.
Are thier any options I have missed out?
Something I have not considered?
Because at the moment I would look like the E8500 is a chip that is not only good value per performance but will overclock to silly speeds.
Well, I wouldn't even look at any of those dual cores if you want to upgrade because all you are buying is clock speed, just overclock it if you want a higher clock speed. Depends on what you are using it for if you need a quad core or not.