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I need help with undervolting my ryzen 7 3700x for cooler temps but no performance drop. I have an aorus b450 pro motherboard and I’ve looked at many guides but can’t figure out how to do it on my bios. When I look at any videos it mentions settings that aren’t available on the gigabyte bios, the only voltage settings are : dynamic Vcore, dynamic Vcore soc, dram voltage, VDDP voltage control and VDDG voltage control. Please respond with help.
I need help with undervolting my ryzen 7 3700x for cooler temps but no performance drop.
Probably not going to happen.
Unless you have a silicon lottery winner, for the vast majority of Zen 2 CPU's undervolting does one of 2 things:
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Causes clock stretching which reduces performance, but does lower temperatures.
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Causes instability along with lower performance and temperatures.
If you want actual results when trying to achieve what you want to achieve, here are your 2 options:
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Reduce the ambient temperature, and if that's not possible:
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Upgrade your CPU cooler as much as practically/financially possible.
However, because of the nature of Precision Boost, improving your cooling and ambient temperature may not actually reduce the CPU temperature by much, because the CPU will try to scale it's performance to the cooling. So, better cooling = higher boost clocks with the same max temperature.
As for your other comment on voltage and temperature spikes, it's normal for the CPU to boost as high as possible to complete background tasks as quickly as possible. This is an architectural power saving feature known as "Race to Sleep." There is nothing to worry about with this behavior.
My suggestion is that if your CPU isn't hitting 90c and throttling below base clock, don't pay attention to the temperature, because it's running what the Precision Boost algorithm deems as appropriate for the CPU's environment.
However, if you really feel you must pursue this, and I suggest you don't, download Ryzen Master, and you can set up a static voltage there. But I promise you will not like the results.
With one of the latest BIOS and the latest chipset drivers, my 3600 doesn't show temp spikes anymore.
Hello everybody
I ve just build my pc with ryzen 7 3700x and i ve noticed that he run at high temps while idling around 60c and it hit 80c while gaming and the voltage fluctuat between1.4-1.5v I want to know IS it safe to undervolt my CPU by -0.100v without overclocking it or touching another specs in my MOBO( everything set as default and auto)?
NB: PBO IS disabled
My specs are: Ryzen 7 3700x with gamemax 500 RGB cooler
MOBO TUF b450 plus gaming GPU RTX 2060 super Ram 16 ( 2x8)2133mhz Thanks for your helps
It is better to set a negative voltage offset. This basically lowers your maximum voltage. So, if you add a -0.1V offset and the max volt was 1.5V, it'll now be 1.4V. That can help drop temperatures. I did the same thing on mine because it's basically free temperature reductions if your processor can handle that without negative effects.
You have to be careful not to go too far with the offset though. If you go too far, performance will be negatively affected. It is important to use a benchmarking tool like Cinebench R20 to check you've not lost considerable performance by lowering the voltages.
I would not recommend adding a fixed voltage to your CPU. Even running the CPU at 1.3V or something can be dangerous. When it comes to Ryzen Zen2, the safe voltages are not known and seem to vary depending on a chip-by-chip basis. It's best not to tamper with that. People have reportedly degraded their CPUs by adding fixed voltages of around the 1.3V+ mark.
If you're using the stock cooler and reside in a hot room, your temperatures will be quite high. Make sure the cooler has been mounted properly and the fans spin at an appropriate speed. You should also ensure that the BIOS is up-to-date and that you have the latest AMD chipset drivers installed (get them from AMD's website).
If you're not happy with your current cooler, you may want to consider upgrading. Ryzen Zen2 does run quite hot, but beefier coolers do a better job at getting rid of all that heat. I cool my 3700X with the Noctua NH-D15S.
Question: why are you using 2133mhz RAM?
I went from Corsair 3200 RAM to GSkill 3200 RAM on my 2700x, and my temps dropped like 8° for whatever reason. I would suggest trying more Efficient, pro-Ryzen ram, before underclocking. That or a better cooler. Ryzens can typically run a bit warmer too though, my liquid cooled 2700x runs around 45 stock, and where I have it clocked now, around 60° idle. That being said, under load it stays under 70°
Hi,
I have ryzen 7 3700x and 2070 super.
I watched a lot of videos about undervolting the cpu, but when I follow along, I see no results, or unwanted ones.
For instance, When I tested cinebench 20 at stock settings, I got 4770 pt and 75C (temp), so that's the reference I will be using. Then, I undervolted the cpu in the bios using Dynamic Vcore (DVID) and set it to -0.048 volt (minus). After testing with the updated voltage, I got 4750 pt and 75-76C in cinebench20, which is obviously lower. Also, I tried another method by using Ryzen master and I set the voltage to 1.0 volt at 3.6 Ghz and got 55 C with something around 4200 pt. The problem with this method is that the speed doesn't go higher than 3.6 ghz. On the other hand, at stock settings, the speed goes between 3.6ghz and 4.2ghz. Is there a way to have the voltage at 1 or something close, while having speeds that go between 3.6ghz and 4.2ghz? or at least 3.6 and 4.0 ?.
I am an amateur when it comes to PCs. So, sorry if my questions seems.........stupid.
Last thing, I heard some people talking about PPT and they say it's better than undervolting. How do I exactly use it?
Thanks in advance.
Hey all! I really wanna undervolt my 7700x cpu, but am a little scared/clueless on how to do it, if anyone can help me that would be amazing! Thank you so much I have the gigabyte b650 Gaming X AX V2 And the Ryzen 7 7700X Thank you! :)
I was putting together some notes for my more in depth review, but there's been so much buzz around the topic of voltages on Zen 2. I figured I'd share these results a little early.
So the setup is similar to before:
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3700X under a Scythe Big Shuriken 3
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Asus B450 ITX ROG
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16GB of 3200C14 B-die (running at 3200CL16)
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Corsair SFX 650W
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Zotac 2080 Ti
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Silverstone RVZ03B Case
One of the interesting aspects of this chip, is that voltage offsetting doesn't seem to impact stability too much, but reaches a point where performance degrades. Also interesting, is that the degradation appears to affect higher loads (synthetic stress tests) more so than "lighter" loads (gaming).
The table below is the raw data I collected along my benchmarking journey this week around this. Understand that not every chip will be able to hit the same voltage/performance marks, but there is likely some power savings to be had with undervolting.
For games, I used Assassins Creed Origins and Rise of the Tomb Raider. I chose these because they netted the highest gain when upgrading from my 1600. They also make very good use of threads. 3 runs were performed and averaged. Settings were 1080p and "Very High" preset.
| BIOS OffSet | Stress V | Stress Power | Stress Temp | CPU-Z Score | % | Game V | Game Temp | ACO | % | ROTR | % |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Auto | 1.325 | 77W | 76.3 | 5450 | 100 | 1.37 | 61 | 101 | 100 | 174 | 100 |
| -0.025 | 1.294 | 75W | 76.3 | 5431 | 100 | 1.34 | 60 | 104 | 103 | 173 | 99 |
| -0.050 | 1.269 | 69W | 76.0 | 5423 | 100 | 1.31 | 59 | 103 | 102 | 168 | 97 |
| -0.075 | 1.256 | 67W | 73.4 | 5436 | 100 | 1.28 | 58 | 101 | 100 | 172 | 99 |
| -0.100 | 1.231 | 60W | 70.8 | 5342 | 98 | 1.25 | 58 | 103 | 102 | 172 | 99 |
| -0.125 | 1.206 | 52W | 66.3 | 4702 | 86 | 1.22 | 57 | 101 | 100 | 169 | 97 |
| -0.150 | 1.181 | 47W | 63.6 | 4463 | 82 | 1.20 | 55 | 97 | 96 | 163 | 94 |
| -0.175 | 1.170 | 44W | 63.0 | 4424 | 81 | 1.18 | 53 | 94 | 93 | 160 | 92 |
| -0.200 | 1.150 | 43W | 61.2 | 4396 | 81 | 1.16 | 53 | 95 | 94 | 160 | 92 |
At 43W synthetic stress load, this chip takes a 19% hit off the OOB performance in synthetic multicore benching, but only 6-8% off the games tested. The ideal point appears to be -0.100 to -0.075 offset. That takes about 6 degrees and 17W off the chip.
I'm interested to see how or if this changes once Asus fixes the cold ram boot voltage. I can't run my b-die at rated or tuned speed until they do.
Your results of negative voltage are expected. The CPUs are highly tuned to require a certain voltage to achieve a certain clockspeed. Reducing the available voltage window has the effect of reducing the available clockspeed window, and limiting boost performance.
Is the purpose of undervolting purely for tempatures? Is PBO enabled? I literally just got my 3700X, updating the bios now with my 2600X then will be installing. Not planning on overclocking but instead will be fine tuning PBO. Any advice for out of the box settings? I have 3200 B die ram as well and using the same exact motherboard you have, also came in today.
Hi, I'm not the most experienced with OC, but I have a home server with a 3700x in a b450m Pro4 that I would like to keep with as low power as possible while idle, but be able to scale up.
I noticed that by default, my motherboard was sending 1.4v+ to the CPU, and thought that seemed kinda high, and researched a bit online and said they should still do fine powered at 1.375. So I manually set that in my bios.
but then I noticed my CPU temps were higher than before....odd...so I looked a little deeper, and realized that the CPU frequency governor I had set (conservative) wasn't activating because the CPU freq was full blast.
A bit more googling and I've learned that apparently, setting the voltage manually disables any scaling state but p0.
So I'm wondering if there's something I should be doing to minimize power usage.....should I just suck it up and deal with the high CPU voltage but take advantage of the governor? or is there a way to get both?
1.4v is perfectly fine and as it should be when CPU is not utilized much. It all depends on CPU utilization and current. Do a stress test with Prime95 and you will see that it drops to 0.9v - 1.1v on high CPU usage. If you set your CPU to 1.37 manually then you will slowly kill it.
You could select Eco Mode in BIOS, but that would reduce TDP to 45W.