Undervolting Turing and Pascal GPU-s.

[Vejnemojnen]

I'll be brief. Came across some articles about the subject. (Both in german, though translator works like magic!)

 

Turing Undervolting  15% reduction in power consumption, while still applying overclock. Very friendly temperatures and power.

Undervolting: more FPS with less power

 

Turing UV tutorial via MSI afterbürner 8:38: [link] 

Resulting temperatures, fan speed, wattage: [link]

 

For me, it seems: UV-ing Turing is purely beneficial. Apart from reducing temperatures, noise and power, it can also (at least theoretically) prolong the life expectancy of GPU.

 

Any thoughts, remarks? Personal experiences? Why people usually don't bother with it? : )

[Chen G]

I have a 2080ti, the voltage slider on various OC programs don’t do shit, voltage can’t be adjusted up or down at all.

I don’t really care because I’m already near max clock speed if I lower the voltage it won’t be stable.

I just use the sliders that do work, I’m at 2100mhz, don’t know the voltage, 350w (thermal limited to about 310w at 70 degrees).

[Vejnemojnen]

3 minutes ago, Chen G said:

I have a 2080ti, the voltage slider on various OC programs don’t do shit, voltage can’t be adjusted up or down at all.

you are doing something wrong ... Tried it with 2080ti (MSI Gaming X trio), and it just worked. 5 celsius degree improvement in operating temperatures, lower fan speed on average.

[Chen G]

9 minutes ago, Vejnemojnen said:

you are doing something wrong ... Tried it with 2080ti (MSI Gaming X trio), and it just worked. 5 celsius degree improvement in operating temperatures, lower fan speed on average.

I have the MSI seahawk EK X, should be the same PCB as the gaming x trio. I don’t mess with the settings any more but when I got it I tried everything, afterburner, EVGA precision, they don’t affect the voltage a single bit.

 

Nothing personal but I find your report untrustworthy because 5 degree difference is well within margin of error for a regular user.

[Vejnemojnen]

1 minute ago, Chen G said:

I have the MSI seahawk EK X, should be the same PCB as the gaming x trio. I don’t mess with the settings any more but when I got it I tried everything, afterburner, SEVGA precision, they don’t affect the voltage a single bit.

 

Nothing personal but I find your report untrustworthy because 5 degree difference is well within margin of error for a regular user.

Not just personal, others reported similar results. Have you tried it the way it is shown in the video? 

[Chen G]

1 minute ago, Vejnemojnen said:

Not just personal, others reported similar results. Have you tried it the way it is shown in the video? 

I’ll try that later when I get home. It hard to tell because these things change frequencies and therefore voltages all the time, so first I need a method to know if there is any difference.

[Vejnemojnen]

1 minute ago, Chen G said:

I’ll try that later when I get home. It hard to tell because these things change frequencies and therefore voltages all the time, so first I need a method to know if there is any difference.

Just another handy material on the topic: It should work this way... Good luck

 

[Chen G]

I just tried and it actually works...

The voltage slider still doesn't do shit but the graph thing does, who wouldn't known? I didn't even know this graph interface existed until now.

I don't get why they have to make these overclock software UI so god awful, what's wrong with just plain white window with sliders? 

 

Ok so I messed about with the thing, quickly drew my own curve, here's what I found:

• Stock: 1960mhz, 300w, 1.050v
• Overclock: 2070Mhz, 350w, 1.050v
• Custom Curve: 2010mhz, 260w, 0.931v

Almost same performance but much lower power consumption, which is to be expected when you undervolt.

However what I don't get is what's preventing my custom curve profile from going any higher? I made the curve go all the way up to 2300mhz at 1.2v but it won't actually go there. Why does it stop at 0.931v?

[xg32]

1 hour ago, Chen G said:

I just tried and it actually works...

The voltage slider still doesn't do shit but the graph thing does, who wouldn't known? I didn't even know this graph interface existed until now.

I don't get why they have to make these overclock software UI so god awful, what's wrong with just plain white window with sliders? 

 

Ok so I messed about with the thing, quickly drew my own curve, here's what I found:

• Stock: 1960mhz, 300w, 1.050v
• Overclock: 2070Mhz, 350w, 1.050v
• Custom Curve: 2010mhz, 260w, 0.931v

Almost same performance but much lower power consumption, which is to be expected when you undervolt.

However what I don't get is what's preventing my custom curve profile from going any higher? I made the curve go all the way up to 2300mhz at 1.2v but it won't actually go there. Why does it stop at 0.931v?

the power draw at 1.2v at 2300mhz would be way higher than 300w, from what i've seen the most efficient range for these cards are actually around 225-275w, depending on cooling with optimized voltages/frequencies.

[Chen G]

47 minutes ago, xg32 said:

the power draw at 1.2v at 2300mhz would be way higher than 300w, from what i've seen the most efficient range for these cards are actually around 225-275w, depending on cooling with optimized voltages/frequencies.

I know, but my TDP max should be at 400w

I'm not thermal limited either, it's at 65 degrees.

Being able to define a complete frequency/voltage curve means you can get the best efficiency when you don't need max performance, but also max performance when you do need it.

[Vejnemojnen]

10 hours ago, Chen G said:

• Stock: 1960mhz, 300w, 1.050v
• Overclock: 2070Mhz, 350w, 1.050v
• Custom Curve: 2010mhz, 260w, 0.931v

 

so , basically higher clock speed than Stock, but still lower wattage&voltage. Nice. How were the temperatures? Or fan speed on average?

[Ebony Falcon]

Unfortunately my card is voltage limited 

vrel vop in gpuz 

 

so I use the graph to force card to run at 1.093v 

2055mhz

 

im sure I could get say 1900mhx stable at .975v

 

but my card only hits 55c with my oc and I don’t care for the lower power draw 

[Vejnemojnen]

6 minutes ago, Ebony Falcon said:

Unfortunately my card is voltage limited 

vrel vop in gpuz 

 

so I use the graph to force card to run at 1.093v 

2055mhz

 

im sure I could get say 1900mhx stable at .975v

 

but my card only hits 55c with my oc and I don’t care for the lower power draw 

well, on stock voltage settings I'd try to OC the GPU as much as possible.  

[Ebony Falcon]

Just now, Vejnemojnen said:

well, on stock voltage settings I'd try to OC the GPU as much as possible.  

Stock settings I can get 1980mhz  stable but voltage flicks from 1.025 to 1.68 

I have a profile for 1.068v and 2020mhz stable that I mostly use because I don’t see the point in running a full balls to the wall of 24/7 because the FPS difference is like 1 if your lucky

[Chen G]

7 hours ago, Vejnemojnen said:

so , basically higher clock speed than Stock, but still lower wattage&voltage. Nice. How were the temperatures? Or fan speed on average?

Well higher clock and lower voltage than stock is to be expected due to how much headroom they leave for mass produced chips.

 

If only the software isn't so ass I might be able to make every power state much better. I cannot simply because the interface is way too hard to use, I adjust some points and sometimes it changes the entire graph when I hit apply, sometimes the displayed graph is not the same as what the GPU actually follows, sometimes when I hit apply it just reverts back to before.

 

I'm running on a custom loop so temperatures aren't going to be comparable with others.

[Vejnemojnen]

@Buksi a topik kezdő hozzászólásában találsz Invidia Turing tutorialokat.

 

Igen, érdemes megcsinálni, több celsiusfokot, wattot spórolsz, halkabb és hűvösebb lesz a kártya, kevesebbet fog zabálni, s még az elhasználódása is kisebb lesz. Extra gány saját tartalmat citálni, de ez van : )

 

"same in english", as they say. I only said something about why it worth the tweaking. An undervolted GPU will run a tad bit cooler, on less power, sometimes even quieter. So, if one can spare some time...