Im running stable @1.4GHZ...
I'm on Gummycarged 1.9 and using Setcpu to o/c @1.4 GHZ...It supports 1.5 GHZ & 1.6 GHZ but IME will cause bootloop. I'm consistently scoring a benchmark between 2000 & 2180! My best score before was 1750. I also figured out to use Android Overclock and set VM heap to 40M...this immediately fixed the lag and freeze issues. I up until doing these mods daily regretted giving up my Droidx and Droidx II. I have both the Droidx, Droidx II and with the new mods the Charge kicks both their asses! I have a new favorite device!!!!!