Power limits MSI B560 Pro-vdh & i7 10700

pawle1015ce02ea

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Hi,
Should there be a difference between air and water cooling between PL1 and PL2?
CPU: i7 10700
MSI B560 Pro-vdh Wifi
Bios: 7D18v17

Is it normal for this configuration in Cinebench R23? :
All cores max 4.1 GHz
temp cpu ~60
score 10 708
 

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citay

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Yes there should be, and in most boards, there is (Water Cooler will max it all out at 4096W). However, your board is still a pretty low-end model based on a budget chipset, so maybe they felt the need to protect the board's VRM section from overheating like that. Plus you have a 10700 (non-K) whose official, very conservative limits you can see under Boxed Cooler. But nothing prevents you from setting higher limits manually. This can be done here:

MSI_SnapShot_13 Advanced CPU.png
 

pawle1015ce02ea

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I am sure that in the previous version of the bios I had a higher limit on PL1 (~135W, see attached screenshot from 08.2021 bios 7D18v12).
What are the safe power limits for this setup for maximum gaming performance? (air cooling).

Long 135W ?
Long 25s?
Short 200W?
?
limits.jpg
 

citay

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You can see the maximum go to 140W. I'm not sure what a 10700 non-K draws under full load. Anyway, the default Tau (time for PL2->PL1) is 28 seconds for all non-K models, and for the -K models it would be 56 seconds (twice that of non-K, because worse cooling is assumed for non-K).

To find out what your system is comfortable with in regards to temperatures, yes, you can set the values you mentioned, and then check the sensors with HWinfo64. Run the latest version and expand all sensors by clicking on the little <--> arrows on the bottom. Also expand the columns of the sensors a bit so everything can be read. Make it three big columns of sensors. First let it run in idle for a while, so the "minimum" baselines for the values are established. After a short time in idle, produce full CPU load with Cinebench R23, and after the 10 minutes, when the CPU temperatures have stabilized at the highest level, take a screenshot. This will show all the important sensor data at once, both for no load and full load.
 

pawle1015ce02ea

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I changed the power limits and did the test in Cinebench. See attached screenshots. Do you think the temperatures and everything else is fine?
Long 100w>>140w
Long 8s>>28s
Short 115w>>140w

1.Multicore Cinebench R23 (score 11502, was 10709)
1674398978625.png

CR23 test.jpg

2.Windows
Windows.jpg
 

citay

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I thought you wanted to set 200/135W or so? When i mentioned 140W, that was about the value under "maximum" in your screenshot (because you said 135W).
No need to take seperate screenshots for idle and load, because the minimum and maximum values will reflect both states, if you first let it idle a bit before CB23.

Your cooler can definitely transfer more heat away than 140W, but you also don't want it to get too loud while doing it. What's the cooler model? Try with 200/150W for example.
 

pawle1015ce02ea

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Yes, I was thinking about 135/200 at first but wasn't sure if it was safe.
Cooler: fera-5-dual-fan
Now I use PL1=150W PL2=200 time=28s. Score 12 129 but the cooler is loud. Are these power limits safe for the CPU and motherboard?
CR 23 150_200 ver2.jpg
 

citay

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Ok, like i thought, the cooler achieves the good temperatures with high fan speeds. It would seem that your CPU naturally peaks at 154W for CB23 multithreaded load, then gets limited to 150W, so that 4W don't really make a difference. While these power limits are safe, i would combine two things now:

1) Relax the fan curves a bit, so it makes less noise and allows for higher temperatures (you can go to around 80°C, then you still have reserves for the summer).
2) Set PL2 160W and PL1 120-140W (depending on the noise you want to tolerate). This way your cooling has no risk of getting overwhelmed, short bursts of load will finish faster, while long workloads don't cause too much noise.

Don't put too much emphasis on the CB23 score, when you don't do such things like encoding/rendering a lot. It is a very unique workload otherwise, because it loads absolutely all cores. With gaming for example, most of the time you will have 4 to 6 cores loaded, not more. So in that case you should stay well below 100W CPU power draw and your GPU does the main work.
 

pawle1015ce02ea

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I set PL1=130 PL2= 160. The cooler was less noisy. Score over 11,000
CR23 130_160.jpg

My CPU fans curves:
In the PC I have 2 fans CPU, front: 3x120mm, rear: 1x120 mm, top: 2x:140mm.

CPU fan.jpg
 

citay

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This seems like a good compromise between noise, temperatures and performance for your setup. You can even relax the fan curves a bit more now for lower noise.
For example, set 100% at 90°C, 70% at 80°C and 40% at 65°C.
 
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