Overclocked Skylake with disabled C-State, how much more power consumption than with C-state enabled?

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bladefrost

bladefrost

Commendable
Nov 20, 2016
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1,510
I want to know because I have a non-k i5 6500 @4.4ghz, 1.325v on the core with c-state & speed-step disabled. How much power consumption does this processor consume compared to when C-state & speed-step is enabled? Is it significant to cost my electric bill to rise? I have my PC on for at least 15 hrs / day.
 
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chenuki
Can't say for i5-6500, but my i3-6100 3.7@4.7 consumes about 40W extra at 100% load compared to idle. From this chart: http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/71760-intel-skylake-i5-6500-i5-6400-i3-6100-review-12.html
it appears a non-OC 6100 consumes extra 29W at 100% load compared to idle. That makes disabling C-states plus increased voltage cost 11W extra at 100% load. At idle that difference would probably be negligible.. maybe enough savings to power a case fan.

For me, my dual Dell monitors alone eat up 200W, so I'm not concerned about a few watts from speedstep.

Hope this helps you
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chenuki

chenuki

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May 11, 2016
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1,960
Can't say for i5-6500, but my i3-6100 3.7@4.7 consumes about 40W extra at 100% load compared to idle. From this chart: http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/71760-intel-skylake-i5-6500-i5-6400-i3-6100-review-12.html
it appears a non-OC 6100 consumes extra 29W at 100% load compared to idle. That makes disabling C-states plus increased voltage cost 11W extra at 100% load. At idle that difference would probably be negligible.. maybe enough savings to power a case fan.

For me, my dual Dell monitors alone eat up 200W, so I'm not concerned about a few watts from speedstep.

Hope this helps you
 
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bladefrost

bladefrost

Commendable
Nov 20, 2016
21
0
1,510
Thank you for the answer. Do you use manual vcore or adaptive? My skylake vcore is at 1.15v constantly. Will it affect it's lifespan significantly than setting it to adaptive?
 
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