There are no real penalties with the performance of the Thermalright Ultra 120 Extreme, and all the features we look for in a quality cooler are present. However, Thermalright still has a bit of work to do on the Socket 775 adapter that will ship with the Ultra Extreme. Where it barely fits on Ultra 120, the 775 adapter will fit between the heatpipes on the original Ultra 120 and effectively mount a Core 2 Duo. However, with closer heatpipes on the Ultra 120 Extreme, the 775 adapter will not fit between the heatpipes.
You have to bend and weaken the metal 775 adapter to pass it through the pipes, and then straighten it out for mounting. If you are careful this will work, but it is not the kind of mounting we expect to see with a top-end cooler like the Thermalright Ultra 120 Extreme. We sincerely hope Thermalright will make the necessary corrections to the Socket 775 adapter to fix this problem. Most enthusiasts these days will be using a Core 2 Duo for their overclocking system and requiring end users to bend cast metal is not a good solution.
hehe