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[Build Log] Party like it's 2009! - Page 33

post #321 of 323
Quote:
Originally Posted by Artikbot View Post

Since I said I'd do it, here it is.


In an effort to find the voltage-clockspeed-power consumption sweetspot area I dicked about yesterday with the clocks.

Results are measured with a Kyoritsu clamp meter model 2017, accurate to -+1.5% and finest measurement scale of 0.1A for the last digit.
Voltage input at the time of measuring is 232V AC. Inside the parenthesis is the voltage read by CPU-Z/HWMon, outside the value set in the BIOS (LLC to Auto).

Noteworthy is that these values are with all the peripherals connected, as well as an LG E2250V connected to the 12V rail (rated at 35W input, so I'd attribute it around 25W considering the settings configured).


  Idle Processor load Combined load
Stock 162W -+11 209W -+11 278W -+11
3.7GHz 1.27V (1.236V) 162W -+11 255W -+11 325W -+11
3.8GHz 1.27V (1.236V) 162W -+11 255W -+11 325W -+11
3.9GHz 1.35V (1.306V) 162W -+11 278W -+11 348W -+11



Taking into account the relatively coarse scale of measurements and seeing how it is clear that the voltage requirements skyrocket past the 3.8GHz mark, it's safe to assume that around 3.8-3.85GHz is the power/performance sweet spot for my particular sample.

It also plateaus at some acceptable 72C, although there are reports that Gigabyte boards aren't reading temperatures adequately. I wouldn't be surprised, as the waterblock is merely warm to the touch (I estimate around 40-45C), and a junction-waterblock deltaT of 30C doesn't make any sense at all.

Don't you mean +-22W?

:3
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post #322 of 323
Thread Starter 

Oh yeah I forgot to mention that (was meaning to, honest!) @CynicalUnicorn corrected my numbers lol

   
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post #323 of 323
Did you fix your slanted waterblock yet?
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