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More MHz eats more Watt @ same Volt?

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#1
Hi!

I am somehow going green lately after some being pissed off at my power company about rising price last 12 month 3 times (I changed my power company 2 weeks ago) and some pain in the ass bills.

Now I would like to know if my "green" OC off more MHz on my Q6600 but default VCore makes sense.

When I had an Watt-meter some weeks ago I didn´t notice any difference. I had approx 150W consuption in XPs desktop @ idle and no more Watts when applying a 500MHz OC that was stable at default VCore.

I had SpeedStep on and it lowered the MHz to about 500MHz less than it would with the normal 2400MHz.

So my logic says that more MHz don´t use up more Watt if not feeded intentionally?

Lauri
 
Last edited:

cdawall

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#4
I did some testing with my Q9550 system, Win 7 64-bit:
Code:
                  idle, C-states & EIST on  idle, EIST on  idle, C-states & EIST off   full load, Linx 
2.83 GHz           95 W                            107 W                   108 W                    183 W
3.61 GHz           99 W                            109 W                   109 W                    208 W
4.25 GHz                                                                   131 W                    321 W
Lower speeds were using stock 1.225 Vcore, 4.25 GHz was using 1.3375 V. Seems that as long as you don't touch Vcore setting power usage doesn't increase very much.
 

Bo$$

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#5