@ pvhk
: IMHO you should do the math once again! No wonder you could not go higher with practically default Vcore with both your PM725 ones (1,6G). With 160Fsb you achieved (2,56G) is a quite normal result with default cooling, since mostly w/o bumpin´ up Vcore Dothans go around 2,5GHz so ... Your 725 Dothans/100Fsb (27W) going to 200Fsb (3,2G!-100% OC) would need max.Vcore & at least waterCooling & maybe a Peltier element too! You other one (730/133fsb-but same basic 1,6GHz frequency) is just 50% OC-ed to 200Fsb/2,4G.

The story with low (13x) multiplier & 100Fsb CM350J having a default 1,26Vcore (and max.full load 21W heat dissipation is IMHO totally different & IMO could with 10% up bumped Vcore /to 1,38V/ hit w/o problem 200Fsb/2,6GHz with stock cooler ... and would be faster than your 725/160GFsb@2,56G because of higher Fsb ... Compare Mrki´s result!

@ Mrki : wow, good achievement! What kind of cooling & Vcore?

Regards from Spajky, the member of "Silent AirCooled Computer Owners Team" (with inaudible setup, Tualatin on BX) ...