DOUBLE TALK: <These all seem pretty close to me.
You cannot compare 3xx <-> 5xx, but you can compare 5xx <-> 7xx, it appears.>
Based on your 2nd statment, you can't compare 3xx to 7xx either, so let's CORRECT the first statement to say, "One third of the numbers seem pretty close to me."
PS - the Prescott Celerons will be slower than you think.
Petz