Apr 8 2018, 01:43 AM
QUOTE(S4PH @ Apr 6 2018, 12:08 PM)
Just got myself a vega 64 and need to ask some sifus here about undervolting through wattman, seems therea a slider for power if i reduce say by negative 20% is that undervolting?. I saw at the gpu clocks settings there is also a text box to key in the voltage manually. I tested changing p state to 1100 on both text box (original setup is 1150 and 1200. notice alot of drop on temps.
You can read up this 2 articleshttp://www.tomshardware.com/reviews/amd-ra...ing,5234-4.html
https://us.hardware.info/reviews/7611/3/und...wer-consumption
So it seem, by undervolting and setting higher power limit, my Vega 64 actually runs faster than Turbo mode while consuming less power.
My profile setup is Clock - P6 State (1050 mV), P7 State (1100 mV), Memory 1000 Mhz (1100 mV) and power limit set +50%.
I ran ROTTR benchmark, under AMD Profile Balance, Turbo and my Custom profile and you can see the results here (and use HWInfo64 to check out the max readings). Also I did screen capture at around the same period during the ROTTR bench.
AMD Profile: Balanced Average FPS: 82.36 HWInfo Max: 221W (Chip Power), 1553 MHz (Clock) 945 MHz (Mem)
AMD Profile: Turbo Average FPS: 84.01 HWInfo Max: 255W (Chip Power), 1592 MHz (Clock) 945 MHz (Mem)
AMD Profile: Custom Average FPS: 87.43 HWInfo Max: 245W (Chip Power), 1590 MHz (Clock) 1000 MHz (Mem)
This post has been edited by adilz: Apr 8 2018, 01:44 AM
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