This chip was the only Paxville DP, all the rest were MP, I tried one the Precision 670 wouldn't post with it in there, same socket and all but no go. The 955 and 965 had HT as well, but they were also extremes, I have a 955 in the drawer. I have a lot of the socket 775 extreme CPUs, almost a collection going. I don't have the QX 9xxx ones though, they are still to exspensive just to have sit in a drawer, my QX 6700 still gets some usage every once in awhile though.
I also just got some AS5, redid all my main laptops, loved seeing the temps drop over the AS ceramic I was using, ceramic is nice since you never need to replace it, but the temps were terrible compared to AS5.