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#11
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65w vs 125w
Frequency takes more power so you will find higher frequency processors
draw more power...and create more heat just like a lightbulb the difference in wattage will have more or less light and more or less heat. HRH Frequency has very little meaning in power consumption. My dual core 4200+ draws less power with 2 cores running at 2.2Ghz than my older single core 3000+ running at 2.0Ghz. The only time you'll see a noticeable increase in power consumption is when you increase the core voltage. That is correct - higer frequency processors draw more power because their voltage is usually set higher. If you increase the voltage on an idle cpu, you will see the power consumption increase - dramatically. A change of .1 v can make a big difference. Changing cpu frequency by itself doesn't make a huge difference. Try it on an idle cpu, or one with a constant load, and watch what happens - power consumption will not change very much. Then bump the voltage up or down by ..1v and watch power consumption significantly change. I have a Phenom 9950 2600MHz. I can ratchet the cpu down to 1000MHz, and power consumption changes by maybe 5%. If I then drop the voltage by .3v, power consumption drops by about 20%. Likewise, boosting the cpu to 2800MHz makes no noticeable change in power consumption. And surprisingly, it's rock solid without having to change the voltage any. |
#12
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65w vs 125w
"Zoot" wrote in message ... Frequency takes more power so you will find higher frequency processors draw more power...and create more heat just like a lightbulb the difference in wattage will have more or less light and more or less heat. HRH Frequency has very little meaning in power consumption. My dual core 4200+ draws less power with 2 cores running at 2.2Ghz than my older single core 3000+ running at 2.0Ghz. The only time you'll see a noticeable increase in power consumption is when you increase the core voltage. That is correct - higer frequency processors draw more power because their voltage is usually set higher. If you increase the voltage on an idle cpu, you will see the power consumption increase - dramatically. A change of .1 v can make a big difference. Changing cpu frequency by itself doesn't make a huge difference. Try it on an idle cpu, or one with a constant load, and watch what happens - power consumption will not change very much. Then bump the voltage up or down by .1v and watch power consumption significantly change. I have a Phenom 9950 2600MHz. I can ratchet the cpu down to 1000MHz, and power consumption changes by maybe 5%. If I then drop the voltage by .3v, power consumption drops by about 20%. Likewise, boosting the cpu to 2800MHz makes no noticeable change in power consumption. And surprisingly, it's rock solid without having to change the voltage any. this is true as voltage +/- so does amps |
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