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[PCGH] German site explores the potential for Undervolting the 480 and reduces consumption by 33W using Wattman at stock speed.

post #1 of 6
Thread Starter 
https://www.computerbase.de/2016-06/radeon-rx-480-test/12/#abschnitt_viel_potenzial_fuer_undervoltage_bei_der_rx_480[URL=http://]Stable Undervolting to 1.075 volts the 480 and reduces consumption by 33W using Wattman @1266 core.[/URL]



https://www.reddit.com/r/Amd/comments/4qoclm/german_site_explores_the_potential_for/[URL=http://]Reddit user murkskopf[/URL]
Quote:
German PCGH also tested undervolting the RX 480.
As for the computerbase.de article, in general the text says that they were able to run the card stable without crashes at 1.075 volts. The lower voltage meant that the card clocked higher, because the power target wasn't hit at fast. That's why undervolting increased the FPS. When running the undervolted card without increasing the power target, the power consumption stayed the same, because the card clocked higher (to 1260-ish MHz I guess). They also tested the undervolted card with maximum power target, which resulted in slightly lower power consumption, temps and noise compared to a normal card with max powertarget. Here the power consumption was 33 watts lower on the undervolted card.
PCGH tested undervolting only with their modded card (with Accelero Mono Plus cooler), which again resulted in higher effective clocks (72 MHz more) and lower temps.

I don't see PCGH saying that they used their modified card with Accelero Mono Plus Cooler. Just that it is still loud. I would assume that they used the stock cooler,
https://www.computerbase.de/2016-06/radeon-rx-480-test/12/#abschnitt_viel_potenzial_fuer_undervoltage_bei_der_rx_480




https://www.reddit.com/r/Amd/comments/4qoclm/german_site_explores_the_potential_for/[URL=http://]Reddit user DOHDDY[/URL]

Summary

They undervolted the highest 5 P-states by 0.075V absolutely stable, no crashes over a long testing period.
Undervolted with default power target:
  • +5% performance compared to default
  • -5% performance compared to default with max power target
  • 208W (system) power draw same as default (both hit the power limit)
  • temperature 2°C higher than default (with and without max power target)
  • fan noise 45.5 dBA vs 45.5 dBA default vs 61dBA default with max power target

Undervolted with max power target
  • 233W vs 266W default at max power target vs 208W default (system power draw)
  • temperature 2°C lower than default (with or without max power target)
  • fan noise 57.5 dBA vs 61dBA default at max power target vs 45 default
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AR 5650
(12 items)
 
AK 8320e
(12 items)
 
AR 1151
(7 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-6700K Kaby Lake Quad-Core Supermicro C7Z170-M LGA 1151 mATX MSI Radeon RX 480 GAMING X 4GB Team Dark 16GB (2 x 8GB) DDR4-3000 Model TDRED4... 
CoolingPowerCase
Scythe Fuma (SCFM-1000) Twin Tower EVGA 750 GQ, 80+ GOLD 750W, Semi Modular RAIJINTEK STYX Gold, Alu Micro-ATX Case 
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post #2 of 6
prolly just need bios fix, to tell it to pull harder from the 6pin vs the pcie..

It's really not that big an issue..
post #3 of 6
This how I used to OC everything before the days of aftermarket cooling solutions. I still do on alot of hardware I don't need extra from, like mining where h/w is huge.
post #4 of 6
Quote:
Originally Posted by Hueristic View Post

This how I used to OC everything before the days of aftermarket cooling solutions. I still do on alot of hardware I don't need extra from, like mining where h/w is huge.

Oh boy, the joys I had with undervolting with overclocking all of my mining cards. The 750Ti was a beauty to mess with as well as my 780. I could get .162v lower on my 780 with over 130mhz overclocked from the reference models.

I'm really looking forward to moving my prolimatech mk26 from my hof 780 to another card.
post #5 of 6
I'll just leave these here...

Check out the thread, there's quite a few of us experimenting.
Quote:
Originally Posted by BulletBait View Post

Best I could get with a moderate undervolt (-75mV) vs the aggressive undervolt (-125mV)

GPU Frequency: 3.5% (1310MHz)
GPU Voltages: 800/818/898/968/1018/1068/1075
Memory Frequency: 2250MHz
Memory Voltage: 1025
Fan Speed: 2750
Peak Temp: 65c
Power Level: +50%

GFX Score: 13282
No artifacts or crashes
http://www.3dmark.com/3dm/12847427

So, I was able to overclock +45MHz (3.5%) (plus the memory) w/ an ~9.5% undervolt on the GPU.

This one has tesselation OFF, I didn't have a post from normal firestrike run at base clocks and the lowest voltage I could get with all the details, but the score with normal firestrike tesselation was ~12650 +/-50 over several runs.
http://www.3dmark.com/3dm/12844599
Quote:
Originally Posted by BulletBait View Post

GPU Frequency: 0% (1265MHz) Stock
GPU Voltages: 800/818/898/918/968/1018/1025
Memory Frequency: 2000MHz Stock
Memory Voltage: 950
Fan Speed: 2750
Peak Temp: 60c
Power Level: +50%

GFX Score: 13401 (Again probably has to do with me having an 8350, might be a bit higher with an Intel.)
No artifacts or crashes
http://www.3dmark.com/3dm/12845633

Edited by BulletBait - 7/1/16 at 8:34pm
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post #6 of 6
Quote:
Originally Posted by xartic1 View Post

Oh boy, the joys I had with undervolting with overclocking all of my mining cards. The 750Ti was a beauty to mess with as well as my 780. I could get .162v lower on my 780 with over 130mhz overclocked from the reference models.

I'm really looking forward to moving my prolimatech mk26 from my hof 780 to another card.

Damn, I just searched for my old spreadsheet with all my bios mods and settings calculations but I can't find it. frown.gif

I spent so many hours finding max settings per card for h/w it was a blast. smile.gif
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Overclock.net › Forums › Industry News › Rumors and Unconfirmed Articles › [PCGH] German site explores the potential for Undervolting the 480 and reduces consumption by 33W using Wattman at stock speed.