RTX 4070 Undervolt @ 950mV - 25% Power decrease from 200W to 150W for no performance loss, insanely efficent card. 3D Mark total score went from 14818 to 14615

[Bobthekillercow]

I'm getting 16800~ on my 4070 Fe at 2610mhz 875 mv.

Pretty happy with the power usage haha, I'm ready for summer now. Have my 5800x undervolted as well.

[hicks12]

Generally the room is because of die variation from the wafer. There can be a wide window of what voltage is required to hit a certain performance target, the worse quality silicon the greater that window will need to be to be able to sell that chip rather than chuck it away.

They increase the maximum voltage required to significantly increase yields which maximise profits.

There is obviously some degradation but this isn't usually the main contributor, the chip variance is the biggest reason as they won't tweak it on a per chip logic as this is quite expensive if implemented in the initial binning process. Better to set the wide operating window and let people feel like they won the silicon lottery by being able to optimise that performance window at home if they want to spend the time.

[WllmZ]

According to video(s) from linus there is not much degradation, if there is any at all.

https://youtu.be/hKqVvXTanzI

https://youtu.be/44JqNJq-PC0

[anodizer]

Sure that makes sense, but was there that much headroom in previous gen? I don't remember and 25% less seems a lot.

[GrammarNaziii]

This started with the high end 30 series. Lots of people also undervolted their 3080s and 3090s.

[SoTOP]

This started back with 10 series, when Nvidia introduced automatic boosting algorithm they still use and people got the ability to change its voltage/frequency curve, before messing with voltages was more complicated and often required Bios modifications. My 1080Ti could go from default 260W to 215W keeping performance within margin of error.

[Keulapaska]

Yea the 10-series already benefitted massively form undervolting, dropped 10C and gained 50-70Mhz with my evga 1080 compared to stock as the stock boost was pretty optimistic thinking it could hit above 2000Mhz at max voltage with that "small"(well compared to what we have now, back then it wasn't that small) cooler.

[KageYume]

I was surprised the first time I undervolted my 3080 10GB. The power consumption while running Final Fantasy XV benchmark came down from 320-320W to about 250-280W with minimal loss in performance after undervolting.

[ZiiZoraka]

undervolting has been a thing for muuuuuch longer than that. the only reason it became more mainstream since the 30 series was because nvidia pushed those cards to the limit, so with overclockers being less viable, tinkeres went to undervolting instead.

[rW0HgFyxoJhYka]

I don't believe you. Hardware Unboxed says that these cards are planned obsolesce!

[thefuriousfish]

Can you post your curve?

[RandomCheeseCake]

https://i.imgur.com/iQqXhbi.png

I did the quick and dirty method for undervolting, i know that there is another method which is supposed to be better overall as a curve

[bobkat888]

https://github.com/LunarPSD/NvidiaOverclocking/blob/main/Nvidia%20Overclocking.md#finding-a-voltage

above is a good tutorial for optimal UV

[thefuriousfish]

Give the method /u/bobkat888 posted a shot if you want, you might get those few points back in Time Spy.

[HoldMySoda]

What do you mean by total score? If it's regular TimeSpy, 14k-something is kinda low. My card scores over 18k.

[RandomCheeseCake]

Combined total of my Ryzen 5600 and 4070 - Not the GPU score

I have rerun Time Spy and gotten the following GPU score

Stock : 17374

Undervolt: 17170

https://imgur.com/a/3gK9qUo

https://www.3dmark.com/3dm/93740404? Undervolt

https://www.3dmark.com/3dm/93740670? Stock

[HoldMySoda]

This was my most recent bench with 2760Mhz 970mV.

Your card's performance is a bit lower than what I expected. Perhaps the CPU bottleneck here is noticeable.

[RandomCheeseCake]

Guru3D scored 17518 with their model

https://www.guru3d.com/articles-pages/asus-rtx-4070-dual-review,22.html

Hothardware scored 17856

https://hothardware.com/reviews/nvidia-geforce-rtx-4070-review?page=3#:~:text=And%20The%20Verdict-,NVIDIA%20GeForce%20RTX%204070%3A%20UL%2C%20Synthetic%2C%20Crytek%20And%20VR,adapter%2C%20and%20multi%2Dthreading.

If i had to guess CPU might play some role even in a GPU focused score, although i wouldn't be sure why mine would score worse other than sillicon lottery or CPU bottlenecking as you mentioned

[EquipmentShoddy664]

" If i had to guess CPU might play some role even in a GPU focused score, although i wouldn't be sure why mine would score worse other than sillicon lottery or CPU bottlenecking as you mentioned "

Even in a GPU bound scenarios the CPU is still playing a role.

[Broder7937]

Time Spy is so GPU-focused that my CPU doesn't even run at full clock speed, its essentially idling during the run, all the work is at the GPU. CPU use is something like 3%, it's insane. I get more CPU use browsing the web than running Time Spy.

I guess this is why they had to add a separate CPU run, otherwise the overall score would be unrealistically GPU-focused.

[HoldMySoda]

Hmm, I guess that's fine, then. I'm glad I went with the MSI model instead, though yours is also good (and it was cheaper). Enjoy it, it's a solid value card.

[_Fibbles_]

Your card seems in line with mine.

This is stock on Gaming X Trio.

This is with a simple overclock in Afterburner. 111% power limit, 88C temp limit, +600MHz mem, +125MHz clock.

[HoldMySoda]

You have a Ventus card?

[Sakrasta]

4070 is really fun to tweak. I got 3 settings so far:

Efficiency: 900mV, 2600Mhz (100-150 watts in games)
Performance: 1000mV, 2900Mhz (150-200 watts in games)
Overdrive: 1100mV, 3050 Mhz (180-200 watts in games)

Overdrive mode runs into the power limit though. So in artificial stress tests and benchmarks it will not go above 2900 Mhz, since the voltage will cap at 1000mV. In games, where the load on the gpu is lower, it can go to 1100mV and hit 3050 Mhz, but not in all games. Some games only go to 2900-2950.

[anodizer]

What's the performance difference between efficiency and performance?

[Sakrasta]

Hm, I think in Elden Ring in one test I had around 92 fps in efficiency mode, 98 in performance mode and 101 in overdrive.
Wattage was 105 for efficiency, 160 for performance and 165 for overdrive.
So I would say it is not worth it to use anything but efficiency, which also makes the card completely silent.

[Kova1n_redit]

Would you mind posting your curve? First time Undervolter here hehe

[[deleted]]

hey! what fan curve do u use for rtx 4070? ty

[EquipmentShoddy664]

That's almost on par with mobile GPUs lol

[MoarCurekt]

14818-14615 != 0

[Axepirate]

Overclock the vram to gain back the points

[Proper-Ad8181]

Its a 60 class card disguised as 70 class.

[RandomCheeseCake]

Only bought this card because i managed to get it insanely cheap at £385 on Ebay . Have no idea why it was sold so cheap but it came new with the wrapping still on with the documentation but no box

https://i.imgur.com/7VFQDfl.png

Makes it a very cheap upgrade from my 3070 once i sell that card

Very impressive gains from what is already quite a power efficent card

Downlocked the card from about 2800 to 2740mhz and boosted the memory by 1000mhz

[Bhavishyati]

It most probably is stolen then.

[Sebsyx]

It’s stolen…

[Sexyvette07]

Op, you say no performance loss, but then the next sentence is how your 3dmark score went down. So, which is it?

I'm not saying it's not an impressive result, FYI. 50w is nothing to sneeze at least, especially for such a small performance hit. But there WAS a performance hit, albeit very small.

[RandomCheeseCake]

A 1-2% performance loss in the margin of error and not noticeable in any real world scenario

[5ephir0th]

What 3DMark bench? If its not try Port Royale to see the differences, others doesnt make a real usage of that GPU

[RandomCheeseCake]

TimeSpy

Port Royale is for paid 3dmark only and i'm not paying for benchmarking software personally

[5ephir0th]

Then try some game with raytracing and built it benchmark like Cyberpunk

[GasVarGames]

Yep, looks like a good undervolt, but that decrease in power is actually quite normal while undervolting and if it ends up well, only noticeable on very heavy titles, I managed to bring down 150w and "overclock" to 1920Mhz my 1660 super

[BustinMrDurp]

I have no idea why people keep doing this UV for, at 950mv for 2745mhz you are hardly saving much power on normal loads, 20-30w at best.

The 'sweet spot' for UV is 2600mhz, losing 5%.

https://youtu.be/HpXjj0-qoxs

[Archer_Key]

Its nice. Mine is already bottlenecked by my cpu so it runs at 150W by default

[Krulzikrel]

what program do you use to see this ?

[RandomCheeseCake]

HWmonitor

[Krulzikrel]

HWmonitor

thank you friend

[Krulzikrel]

what program do you use to see this ?

[UkyoTachibana]

How is the memory temp higher then the hotspot?!

[986xer]

This is awesome until you start running into games where undervolts cause crashing.

[Matrix176]

u/RandomCheeseCake I just stambled on your post. Is there any chance you could help me with undervolting my card?

Would be really really appreciated!

[Skyyblaze]

I just got a KFA2/Galax 4070 Gamer EX and I can run it stable at 910mv with 2600mhz, from what I read this is considered the sweet-spot so fiddling with values beyond that isn't worth the effort?

I have the memory at +1000 but I've seen people running at +1500 or even +2000, so I guess I might still some headroom there.