my god, this thread is so damn confusing with the many incorrect inferences and remarks I didn't even want to bother posting, but I guess I will be nice and offer my assistance. To answer your original question, "Can rev2 mushkin 256 mb ram get high also?," the answer is yes, but not necessarily as high as the 128MB sticks, and in fact generally have slightly lower yields. I wouldn't get my hopes up about 150MHz @ 2-2-2, but since the 128MB rev 2's can easily get those results, you should see somewhere near that number, maybe a max yield around 142-148, but as always, your mileage may vary with different sticks.