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Which uses more electricity?

95W vs 65W, the c2d chip at stock is far more efficient power wise.
overclocked power consumption, you'll only end up guessin.
 
You mean current leakage through the gate oxide, at the same frequency and voltage (and process) there shouldn't be too much difference if you look at a single FET. The Core 2 runs at lower stock frequencies and generally lower stock voltages than the Presler/Smithfield/Cedar Mill etc...

Clock gating and other clever things in the Conroe will gain it a fair bit but in the original comparisson between a mildly overclocked Presler and a heavilly overclocked Conroe i don't think the difference will be much...
 
yup generally if you lower the operating voltage you reduce leakage currents. die shrinks in turn allow you to reduce heat output and power consumption while retaining performance.
this is all well and good but we see the leakage of transistor currents not only remains constant but actually increases with every die shrink, its a vicious cycle.
one way cpu manufactures tackled this issue when reducing the die size was to start using silicon on insulator (SOI) process technology, amd started using this back with there 90mn chips, the boost in speeds we saw from these new gen chips was actually due the introduction of SOI in there processing manufacture, not just due to die shrink.
P4s were pre SOI so this is why they have leakage currents issue.
these day all cpu's use SOI process technology.
 
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