perfcap reason idle что делать

Не могу раскрыть потенциал Palit GeForce RTX 3080 Ti GameRock

Купил видеокарту, подключаю к компьютеру, корпус открыт, включаю киберпанк, все настройки на максимум, DLSS – качество, вертикальная синхронизация выключена, разрешение 2к, загрузка видео 70-80%. Процессор 70%. FPS 58.

Не понимаю, в чём проблема, почему видео не 99%? Почему FPS зажимается? Где-то бутылочное горлышко.

Включаю Метро исход. Такая же проблема, видео 60%, проц 50%, FPS 60-90.

Открываю GPU-Z. В разделе сенсоров у датчика «PerfCap Reason» (говорит, в какой лимит упёрлись) сплошная сине-зелёная полоса. Показывает, что достигнуты лимиты по vRel, Pwr. Где:

Pwr = Power. Indicating perf is limited by total power limit.

vRel = Reliability. Indicating perf is limited by reliability voltage.

Думаю, может настройки биоса кривые.

Через Afterburner настраиваю кривую часты и напряжения вручную. Вольтаж 962mv при частоте 1815 Mhz. Применяю. Увеличиваю Power Limit до 113% (максимальное значение).

Теперь GPU-Z говорит, что карта больше не упирается ни в какие лимиты (idle), но ситуация по загрузке и FPS не меняется.

Процессор i7-6800k (6 ядер). Оперативка 32 Gb от корсара (3000 Mhz). Windows 10 Pro лицензия с последними обновлениями. Драйвер видео 466.77.

Последнее предположение, что карту зажимает проц, но загрузка проца не 100% и даже не 90%. А всего 50-70.

Обратил внимание, что любое понижение настроек графики просто снижает нагрузку на видеокарту. FPS при это не растёт.

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matixitam

New Member

Hello everyone, I am kind of a newbie when it comes to overclocking so I am hoping someone can help me with my problem.

Yesterday i wanted to overclock my GAINWARD RTX 3070 PHOENIX via MSI Afterburner. I opened the GPU-Z sensors and started the MSI Kombustor stress test, so that I could proceed with increasing core and memory clock.

While I was still running stock clock settings I noticed that the PerfCapReason was PWR, as seen on the bottom picture.

I then proceeded to increase the power limit in afterburner to 113% hoping that would fix the issue, but the PerfCap reason was still stuck at PWR, as seen on the next picture.

I then stress tested the GPU via AIDA64. This time the PerfCapReason changed to VRel, since the GPU Voltage reached the threshold 1.08 V (next picture), whereas before when stressing with Kombustor the voltage was much lower.

My question is if there is something wrong with my GPU, or am I not understanding something correctly?

evernessince

If you look at the board power draw between the 1st and 2nd pictures, you can see that your card was indeed consuming more power. Even if you didn’t manually increase the core or memory frequency, the card will still boost given the additional power headroom. You can see that in the pictures as well, your FPS increased.

The third picture can be explained simply: different workloads stress your GPU differently, some requiring more voltage. The same applies to CPUs where, for example, when running AVX either the clock is reduced or additional voltage needs to be applied. It just so happens that you are hitting a voltage ceiling in that benchmark instead of power.

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Should I be concerned by vRel and Pwr PerfCaps?

jfjohnny5

New Member

93-103% TDP and PerfCap Reasons of 16, 1, and 4. 16 is present during Idle. Not concerned there. I looked up the other two and found:

vRel = Reliability. Indicating performance is limited by voltage reliability.
Pwr = Power. Indicating performance is limited by total power limit.

My power supply isn’t new, but it’s not some cheap off-brand either; Corsair HX Professional Series 850w. Gameplay itself was smooth. 60+ fps no problem on max @ 1440. I’ll also say that after uninstalling and reinstalling video drivers, as well as a reinstall of Vermintide II, I ran through a couple missions with no crashes (knock on wood).

Question: should I be concerned by the PerfCap Reasons I’m seeing? Is there other testing anyone might suggest?

John Naylor

Corsair HX850 is one of the best units Corsair ever made sold. but would still recommend monitoring voltage on each rail w/ HWiNFO

jfjohnny5

New Member

Ok, never used that before. Just grabbed it. Looking at the Sensor stats for the motherboard, I see readings for the +5V, +3.3V and +12V rails. Assuming I just want to make sure those stay pretty stable, right?

So here are the results after an hour of GTA V and Vermintide II:

+3.3V Rail: 3.376 at idle; 3.328 under load
+5V Rail: 5.040 at idle; 5.016 under load
+12V Rail: 12.096 at idle; 11.904 under load

Seem at all like there’s an issue?

newtekie1

Semi-Retired Folder

Both Pwr and vRel are normal to see on an nVidia GPU. They have nothing to do with your power supply.

These are reasons why the card is not boosting to a higher clock speed. Pwr means you are hitting the TDP limit of your card, vRel just means it is at the maximum clock speed it considers stable for the GPU voltage.

Enthusiast

PWR is normal to see. My cards are capped out by PWR all the time. It just means that the card isn’t allowed to draw any more power by design, so that’s capping performance. You can alleviate this somewhat by installing MSI Afterburner and increasing the power target (some cards allow more than others). Mine will do 112%, but, as a miner, I purposely set it to 80% for a number of reasons.

I thought vREL was short for voltage regulation. in other words, you’re not hitting power limits (or temp limits) but the card will only supply so much voltage.

All thanks to GPU Boost. It takes a number of factors into consideration and automatically overclocks the card as long as everything checks out. It’s a great way for nVidia to squeeze out more performance from their cards for 95% of people. but for those of us who like to overclock our stuff, it’s a bit of a hindrance. The same things GPU Boost checks to make sure it can push higher are the same things we run into issues with when we try to tweak it ourselves.

Hmm. that said, that gives me an idea. Board partners could maybe put out cards with a switch (like a dual BIOS switch) that disables GPU Boost while removing all limits. Maybe with a little nuke icon on it.

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perfcap reason pwr

Franckette

P4-630

Kursah

Super Moderator

Welcome to TPU!, hopefully we can help you resolve your issues but first we need more information from you.

newtekie1

Semi-Retired Folder

Give us a screen shot of GPU-Z’s sensor tab too.

The PWR perfcap reason means the GPU is hitting the Power Consumption limit.

Franckette

I’ve
System Name: Laptop Alienware m 17x R4 Win 7
Processor: Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz
Memory: 12.0 Go
Video Card(s): GTX 780M
Hard Disk(s): SAMSUNG SSD PM830 mSATA 64GB

Before this month i’ved some crashs and freezes (only in games like Fallout 4)
And i’ve low fps when i do a Furmark but not with Benchmark.
In Gpu-Z in percap reason there is writting Pwr and the bar become green.

I’ve the laster driver.

This is a sreen shot

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Mindweaver

Moderato®™

@Franckette welcome to TPU. Also, in the future don’t double post. If you need to add something, just edit your last post. Thanks!

EDIT: You can go over our Forum Guidelines here.

Vellinious

I’ve
System Name: Laptop Alienware m 17x R4 Win 7
Processor: Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz
Memory: 12.0 Go
Video Card(s): GTX 780M
Hard Disk(s): SAMSUNG SSD PM830 mSATA 64GB

Before this month i’ved some crashs and freezes (only in games like Fallout 4)
And i’ve low fps when i do a Furmark but not with Benchmark.
In Gpu-Z in percap reason there is writting Pwr and the bar become green.

I’ve the laster driver.

This is a sreen shot

You’re hitting the power limit perf cap there. As temps increase, so does voltage and heat. as voltage goes up, so does the required power. When you hit the power limit prescribed in the bios for the GPU, it will throttle the core and voltage to bring it back down where it should be.

A couple of things might help, assuming you can use Afterburner or PrecisionX on a mobile GPU.

1. Create a custom fan curve to keep the GPU cooler
2. Increase the power limit slider in MSI AB / EVGA PCX

jmcslob

Vayra86

One more point. Do NOT run Furmark any more. This may have already contributed to the lacking performance or accelerated wear on the cooling solution. If you do increase the power limit slider of this card, this will also increase temperatures further, in turn causing more throttling. I wouldn’t recommend this.

In the end, this is why I hate gaming laptops.

eidairaman1

The Exiled Airman

Needs a good cleanout, possibly a good thermal compound job on the cpu and gpu, mobo chipset.

Other thing, perhaps a bigger brick, other things, lower resolution and detail levels for smoother gameplay, it uses a Mobility gpu which are tailored for power sipping not running full out.

This being a laptop there really isn’t a whole lot out there to OC that cpu

newtekie1

Semi-Retired Folder

This isn’t a heat issue, I’m not sure why people are thinking it is. There is a completely different Perfap reason for heat, it would be coming up Thrm if the GPU was hitting the thermal limit.

Yes, don’t run furmark, it isn’t an accurate test for power throttling. It basically causes the card the power throttle immediately.

Run something like Unigine Heaven in a window with GPUz running and take a screen shot of the sensors tab.

Vellinious

This isn’t a heat issue, I’m not sure why people are thinking it is. There is a completely different Perfap reason for heat, it would be coming up Thrm if the GPU was hitting the thermal limit.

Yes, don’t run furmark, it isn’t an accurate test for power throttling. It basically causes the card the power throttle immediately.

Run something like Unigine Heaven in a window with GPUz running and take a screen shot of the sensors tab.

newtekie1

Semi-Retired Folder

Temps have nothing to do with this issue. The GPU is running well within the temps it should be, it is not getting anywhere near hot enough to cause a noticeable loss in efficiency. And the GPU would be thermal throttling and would probably shut down before the temperature would be high enough to cause an increase in power draw.

What is more likely is that something is lowering the Power Limit(MSI Afterburner for instance lets you drop the power limit to 50%), or the power sense circuit on the GPU is starting to go wonky.

Vellinious

Temps have nothing to do with this issue. The GPU is running well within the temps it should be, it is not getting anywhere near hot enough to cause a noticeable loss in efficiency. And the GPU would be thermal throttling and would probably shut down before the temperature would be high enough to cause an increase in power draw.

What is more likely is that something is lowering the Power Limit(MSI Afterburner for instance lets you drop the power limit to 50%), or the power sense circuit on the GPU is starting to go wonky.

I think if you look at the sensors tab screenshot there, you’ll see exactly what I’m talking about. It’s idling at around 50c, load temps are much higher. As temps increase during load, you’ll also notice voltage increasing until it hits the power limit perf cap, at which time it throttles. temps, clock and voltage drops, and then returns to normal, and then throttles again.

As I stated. increasing the power limit in AB may alleviate the issue, but creating a custom fan curve to keep the GPU cooler under load certainly can’t hurt that either.

I will also concede, that something could be «wonky». But before resorting to the conclusion that the GPU is just broke, I’d try the alternatives that I listed.

Franckette

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P4-630

I do see some green in the GPU-Z screenshot though.

But as long as you can run everything again without huge fps drops you’re fine then.

Happy Gaming!!

Franckette

newtekie1

Semi-Retired Folder

I looked at the screenshot before I posted. I don’t not see what you are talking about.

Idle temperature means nothing. This is a laptop, idle temps will be high because the fan is likely turned off at idle. And the load temps are not going up that high. Judging by the graph they look like thy are getting up into the 70°C range. I can guarantee the temp is staying below 82°C, because that is the thermal throttle temperature, and the GPU isn’t thermal throttling.

That isn’t how it works, at least not noticeably. The voltage on the GPU doesn’t go up because of the temperature. The voltage goes up because the driver is telling the voltage regulator to increase the voltage to keep the GPU stable at the higher clock speeds.

Yes, if temperatures get really high, then the efficiency will go down and the power draw will increase. However, silicon has to get really really hot for this efficiency to matter to the point that the card would throttle due to the power limit. In fact, the temperature would have to be so high, the GPU would already be throttling due to the temperature. We aren’t seeing thermal throttling in the sensor tab, so temperature is not an issue.

As I stated. increasing the power limit in AB may alleviate the issue, but creating a custom fan curve to keep the GPU cooler under load certainly can’t hurt that either.

I will also concede, that something could be «wonky». But before resorting to the conclusion that the GPU is just broke, I’d try the alternatives that I listed.

Going on a wild goose chase trying to solve a temperature issue that doesn’t exist just wastes time that we could be using trying to solve the actual issue.

Yes, increasing the power limit in MSI Afterburner is the first thing I would try too. Heck, it or a program like it might be what is causing the issue.

I’d also do a clean driver install.

Vellinious

I looked at the screenshot before I posted. I don’t not see what you are talking about.

Idle temperature means nothing. This is a laptop, idle temps will be high because the fan is likely turned off at idle. And the load temps are not going up that high. Judging by the graph they look like thy are getting up into the 70°C range. I can guarantee the temp is staying below 82°C, because that is the thermal throttle temperature, and the GPU isn’t thermal throttling.

That isn’t how it works, at least not noticeably. The voltage on the GPU doesn’t go up because of the temperature. The voltage goes up because the driver is telling the voltage regulator to increase the voltage to keep the GPU stable at the higher clock speeds.

Yes, if temperatures get really high, then the efficiency will go down and the power draw will increase. However, silicon has to get really really hot for this efficiency to matter to the point that the card would throttle due to the power limit. In fact, the temperature would have to be so high, the GPU would already be throttling due to the temperature. We aren’t seeing thermal throttling in the sensor tab, so temperature is not an issue.

Going on a wild goose chase trying to solve a temperature issue that doesn’t exist just wastes time that we could be using trying to solve the actual issue.

Yes, increasing the power limit in MSI Afterburner is the first thing I would try too. Heck, it or a program like it might be what is causing the issue.

I’d also do a clean driver install.

1. Then you’re blind

2. Idle temps are the baseline, and it’s clear that as the graph goes up in temps, so does the voltage. Correlation in this case, does equal causation.

5. The one thing we agree on, as well as the driver install

I’ll agree to disagree. I would rather try to set a custom fan curve to help the power limit, and set a higher power limit, than just automatically assume the GPU is just jacked up. Better to at least research all options before jumping to that conclusion, but. according to what you’re saying, just wing it, and go right to, «uh, it’s broken». I’m sincerely sorry, but, that’s just stupid beyond reason.

eidairaman1

The Exiled Airman

Aquinus

Resident Wat-man

That isn’t how it works, at least not noticeably. The voltage on the GPU doesn’t go up because of the temperature. The voltage goes up because the driver is telling the voltage regulator to increase the voltage to keep the GPU stable at the higher clock speeds.

Yes, if temperatures get really high, then the efficiency will go down and the power draw will increase. However, silicon has to get really really hot for this efficiency to matter to the point that the card would throttle due to the power limit. In fact, the temperature would have to be so high, the GPU would already be throttling due to the temperature. We aren’t seeing thermal throttling in the sensor tab, so temperature is not an issue.

I’m going to refute this one. Temperature itself does not increase power draw however, heat does impact how quickly a transistor can switch states which is the real thing that needs to be considered. It’s not unrealistic that nVidia GPUs factor temperature in when determining what voltage to use. There are only two ways to make a transistor switch faster which is a higher driving voltage or lower operating temperature. Also, ohm’s law states that when resistance is constant that V ∝ I so any increase in voltage will have a corresponding increase in current and heat produced is a function of the square of the current.

So, temperatures might be reasonable but, increased driving voltage will increase current draw and if temperatures are reasonable, could mean that a power limit would be hit before a temperature limit but, that isn’t to say that temperature doesn’t factor into the equation even if it’s not the limiting factor.

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