Thought undervolting was supposed to lower temps on a rtx 3070

[Reaper]

I've always tried to do huge overclocks, but the returns have been getting lower with each generation of cards so I started to try and undervolt to lower my temps, but the lower I drop the voltage (and it's still stable in benchmarks) the higher my temps go. How is that possible?

[76561199502155650]

i seen a mini fridge for 70 dollars today, you can't even buy a decent AIO liquid cooler rad for that price. i was tempted to buy it just to put a liquid cool radiator inside the freezer part an mount the PC board to the outside of the mini fridge, then use the whole thing has a chiller to offset the liquid cool tempatures.

someone said the compressior would run non stop, but im sure it would last as long as the computer would stay relivant, and plus you could store your drinks in it while you game.

[Reaper]

引用自 Jamebonds1：

引用自 Reaper：

This is false as long has you don't undervolt it by too much it won't cause any problems at all, unlike overclocking.

It is not possible to undervolting without crash a computer, unless it is closer to outside of the normal operating voltage but still within while lower voltage. My GPU doesn't allow me to go under 0.9 mV.

Well there's something wrong with your gpu then because mines completely fine

[Jamebonds1]

引用自 Please Stop Stalking my Posts：

i seen a mini fridge for 70 dollars today, you can't even buy a decent AIO liquid cooler rad for that price. i was tempted to buy it just to put a liquid cool radiator inside the freezer part an mount the PC board to the outside of the mini fridge, then use the whole thing has a chiller to offset the liquid cool tempatures.

someone said the compressior would run non stop, but im sure it would last as long as the computer would stay relivant, and plus you could store your drinks in it while you game.

Unless it is inverter compressor, it will pump faster and slower based on ambient temperature. Standard compressors will run and stop, and so forth.

Also, I do not recommend messing with the fridge because EPA policies are very strict.

[Jamebonds1]

引用自 Reaper：

引用自 Jamebonds1：

It is not possible to undervolting without crash a computer, unless it is closer to outside of the normal operating voltage but still within while lower voltage. My GPU doesn't allow me to go under 0.9 mV.

Well there's something wrong with your gpu then because mines completely fine

There is nothing wrong with my GPU. I can go lower as 900 mV. As I said, it is not possible to go undervolting to 500 mV or whatever your software limited lower voltage without crash your PC. 800 mV on your GPU is not undervolting.

[Reaper]

引用自 Reaper：

引用自 Reaper：

How much are you undervolting by. Are you using msi afterburner or a different program. As a reference you can look at mine.

3080 using Superposition 1080p extreme:
GPU Stock - 10877 | 74 C | Max of 347W
Undervolt 1 @ .850mV 1800MHz - 10764 (same performance as stock) | 66 C | Max of 290W
Undervolt 2 @ .850mV 1800MHz +500 MEM - 10764 | 65 C | Max of 293W
Undervolt 3 @ .850mV 1845MHz +500 MEM (Sweet Spot) - 11120 | 67 C | Max of 312W
Undervolt 4 @ .875mV 1875MHz - 11091 | 74 C | Max of 334W
Undervolt 5 @ .875mV 1875MHz +750 MEM - 11182 | 74 C | Max of 341W

Using Afterburner for adjustments and 3D Mark Time Spy for benchmarking. I let it cool down to idle temp before running the next tests. RTX 3070

Stock voltage 1.081V 1980MHz GPU temp 70c Hot Spot temp 81c
Undervolt 1 @ 1V 1965MHz GPU temp 70c Hot Spot temp 82c
Undervolt 2 @ 975mv 1965 MHz GPU temp 71c Hot Spot temp 82c
Undervolt 3 @ 950mv 1965 MHz GPU temp 71c Hot Spot temp 83c
Undervolt 4 @ 900mv 1965 MHz GPU temp 71c Hot Spot temp 83c

Ya your temperatures will not change at all if your making very small adjustments like that. Put it to .850mV then you will see changes. Just remember if you decrease your voltage too low the gpu will get unstable, so you also should decrease your clock speed as well. A decrease of 100 MHz will not effect performance at all, like what I did with my 1st undervolt.

[Reaper]

引用自 Jamebonds1：

引用自 Reaper：

Well there's something wrong with your gpu then because mines completely fine

There is nothing wrong with my GPU. I can go lower as 900 mV. As I said, it is not possible to go undervolting to 500 mV or whatever your software limited lower voltage without crash your PC. 800 mV on your GPU is not undervolting.

Well ok then. If you have an amd GPU then you won't be able to undervolt it by a lot because AMD already have there GPUs at a lower power requirement then Nvidia

[Jamebonds1]

引用自 Reaper：

引用自 Jamebonds1：

There is nothing wrong with my GPU. I can go lower as 900 mV. As I said, it is not possible to go undervolting to 500 mV or whatever your software limited lower voltage without crash your PC. 800 mV on your GPU is not undervolting.

Well ok then. If you have an amd GPU then you won't be able to undervolt it by a lot because AMD already have there GPUs at a lower power requirement then Nvidia

Mine is Nvidia, they can't go undervolting either.

[Reaper]

引用自 Jamebonds1：

引用自 Reaper：

Well ok then. If you have an amd GPU then you won't be able to undervolt it by a lot because AMD already have there GPUs at a lower power requirement then Nvidia

Mine is Nvidia, they can't go undervolting either.

Well I was able to undervolt/lower the voltage to .850mV without making it unstable.

[Jamebonds1]

引用自 Reaper：

引用自 Jamebonds1：

Mine is Nvidia, they can't go undervolting either.

Well I was able to undervolt/lower the voltage to .850mV without making it unstable.

That is within normal operating voltage. Manufacturers will never write 1.2 volts as normal operating voltage, except 1.0 - 1.4 volts in specification. But that is private information customer I think.

[r.linder]

Nvidia GPUs tend to just apply extra voltage regardless, it does what BIOS is programmed to do, to inhibit that you have to make a curve that keeps it at a reasonable (but slightly lower than top) frequency. What you’re actually doing when you “undervolt” them now is find a more modest frequency that it can easily run with the target voltage consistently, rather than trying to run factory OC or higher clocks with less voltage.

Example: If it most often uses 950mv and gets around 1800 MHz with that, then that’s around the range you’d aim for to start, and then maybe try to squeeze out as much power that you can with that voltage.

If you go too low on voltage, the GPU will just push for more voltage.

[Reaper]

引用自 Reaper：

引用自 Reaper：

Using Afterburner for adjustments and 3D Mark Time Spy for benchmarking. I let it cool down to idle temp before running the next tests. RTX 3070

Stock voltage 1.081V 1980MHz GPU temp 70c Hot Spot temp 81c
Undervolt 1 @ 1V 1965MHz GPU temp 70c Hot Spot temp 82c
Undervolt 2 @ 975mv 1965 MHz GPU temp 71c Hot Spot temp 82c
Undervolt 3 @ 950mv 1965 MHz GPU temp 71c Hot Spot temp 83c
Undervolt 4 @ 900mv 1965 MHz GPU temp 71c Hot Spot temp 83c

Ya your temperatures will not change at all if your making very small adjustments like that. Put it to .850mV then you will see changes. Just remember if you decrease your voltage too low the gpu will get unstable, so you also should decrease your clock speed as well. A decrease of 100 MHz will not effect performance at all, like what I did with my 1st undervolt.

At 900mv, that's -180 mv from stock, I would at least expect the temps to not go up. Every guide I read on how to undervolt with Afterburner said to test it in -20mv increments and several reported temps averaging 3-5c lower at 900mv, yet I'm getting the same or higher.

[๖ۣۜKevz_]

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[Reaper]

引用自 Reaper：

引用自 Reaper：

Ya your temperatures will not change at all if your making very small adjustments like that. Put it to .850mV then you will see changes. Just remember if you decrease your voltage too low the gpu will get unstable, so you also should decrease your clock speed as well. A decrease of 100 MHz will not effect performance at all, like what I did with my 1st undervolt.

At 900mv, that's -180 mv from stock, I would at least expect the temps to not go up. Every guide I read on how to undervolt with Afterburner said to test it in -20mv increments and several reported temps averaging 3-5c lower at 900mv, yet I'm getting the same or higher.

Check this out for references.
https://www.reddit.com/r/nvidia/comments/jn878f/small_beginners_undervolting_guide_for_rtx_3070_fe/

By the way do you have a custom gpu fan curve setup as well.

[Reaper]

引用自 Reaper：

引用自 Reaper：

At 900mv, that's -180 mv from stock, I would at least expect the temps to not go up. Every guide I read on how to undervolt with Afterburner said to test it in -20mv increments and several reported temps averaging 3-5c lower at 900mv, yet I'm getting the same or higher.

Check this out for references.
https://www.reddit.com/r/nvidia/comments/jn878f/small_beginners_undervolting_guide_for_rtx_3070_fe/

By the way do you have a custom gpu fan curve setup as well.

Yeah, I have a custom fan curve, and it's pretty aggressive too. Once I hit 70c it kicks up to 90% fan speed which is not quiet. So I actually came across that thread and read it before I posted this. What bothers me is that some people who replied stated they went from 70c average which is what I'm getting at stock down to mid to low 60's even at 925mv. I'm at 900mv and still hitting over 70c. I'm not even doing a memory overclock either. One guy actually has the exact same card I do and he's dropping from 70c to 61c at 850mv with a 1k memory overclock. I guess I can try dropping down to 850mv, but the fact I can't get below my stock temp even with -180mv is concerning

[Reaper]

引用自 Reaper：

引用自 Reaper：

At 900mv, that's -180 mv from stock, I would at least expect the temps to not go up. Every guide I read on how to undervolt with Afterburner said to test it in -20mv increments and several reported temps averaging 3-5c lower at 900mv, yet I'm getting the same or higher.

Check this out for references.
https://www.reddit.com/r/nvidia/comments/jn878f/small_beginners_undervolting_guide_for_rtx_3070_fe/

By the way do you have a custom gpu fan curve setup as well.

Went and did some before and after benchmarks with pictures.

Stock results from Time Spy benchmark:
https://gyazo.com/50d8a02a55ba3f6950361ad3eca443d4

900mv:
https://gyazo.com/883d8f69d5bfe414b867702c3fd2a783

875mv, also lowered the clock speed from stock 1965MHz to 1950MHz:
https://gyazo.com/d8dadd1bf25637f95b253d953f521a37

I can try to go lower, but more than one guy from that reddit thread said he had a 3070 that went from 70c stock voltage to maxing 65c at 900mv. I get 70c at stock voltage so based on other people's results, I should theoretically get reduction at least somewhat, not go up.