I am using a 1090T with DDR2 but I am not near a final overclock yet so I didn't want to post before that point. As far as stability testing I did 3.8GHz last night with a two hour Prime95 25.11 - Blend test:



Tonight I tried the same test at 4.0GHz and slightly higher voltage (~1.425v? core, 1.185v CPU-NB) and the system shutdown within a minute. The same motherboard and PSU were able to Prime my 940BE at 1.52v core and 1.47v CPU-NB for comparison.

If you're just looking for numbers with DDR2 I've benched 4.0GHz with 3DMark06, WPrime, 7-Zip, Cinebench 11.5, and Everest 5.50 so far.