Ryzen 5 2600 keeps defaulting to 37.75 multiplier

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t99

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Jul 16, 2014
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I have a photo here of some conflicting information. command center reads the correct current information, but shows that it should be set to default of 3.4. I just went and reset bios to default with no luck. I did not change anything that I recall leading up to this. Game boost (b450 tomahawk) was enabled and then after turning it off I noticed this. It was running at 3.85 across all cores with boost. I can overclock fine, ran at 4.1 with no issues, but I just can't seem to get it back to default and just use the turbo boost. After doing some reading about how the default boost works I just want to leave it stock since all cores will push to 3.9 and drop to 3.4 or anywhere in between based on what it needs.

not really sure what that dip is to 2.56 on just core 1 and 2 while at the same time the others boost up to 3.85 and then right at 5 minutes later same thing again. the bios shows 3.4

https://postimg.cc/ftV3Ljm9

https://postimg.cc/ygRVtf0v
 
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If the CPU is dipping it may be the multitude of sensors that it utilizes to keep current and thermals within AMD spec for CPU. You have a 65 watt TDP for that CPU so it will have lower clocks to stay within that TDP. It may also drop the frequency on the worst cores since they may suck more power to boost to higher frequencies, and it may lower them to boost other cores that don't consume as much energy to get to the same frequency. I use AMD's Ryzen master software and let Precision Boost 2 and Core Performance enhancement do their job.
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agentnathan009

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If the CPU is dipping it may be the multitude of sensors that it utilizes to keep current and thermals within AMD spec for CPU. You have a 65 watt TDP for that CPU so it will have lower clocks to stay within that TDP. It may also drop the frequency on the worst cores since they may suck more power to boost to higher frequencies, and it may lower them to boost other cores that don't consume as much energy to get to the same frequency. I use AMD's Ryzen master software and let Precision Boost 2 and Core Performance enhancement do their job.
 
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t99

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I was thinking of uninstalling everything and not installing Ryzen master, this happened a day or two after installing it. Only thing I can think of that makes sense is both of them are causing some kind of issue even though I only run one. I was thinking to physically reapply the cpu which should reset things if uninstalling software doesn't.

Runs super cool and has Tons of power. 750w corsair and 9 total fans. Temps can't even seem to hit 60+..

I wonder if this can be the processor learning and auto upping the default clocks since it noticed some patterns of certain temps and headroom for a couple days.

I only have amd software installed the last few hours and it seems to fluctuate more, but still seems off. It often moves between 3775 and 3900 now, so good to see it moving to the highest that it should, but it's inconsistent. I can do a benchmark and it will run at 3775, but then I check after random browsing for 20 minutes and see it hit 3900 off and on.

Not a big deal to set it between say 3.2 / 3.4 when I'm not doing much and bump to 3.8 to 4.0 when gaming, just wish someone else has seen this to know if there is an actual problem or not while within the return policy
 
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agentnathan009

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When F@H my 2600X will bounce between 3900 and 3750 depending on room temperature. As I mentioned, the TDP is the thermal headroom that AMD, or Intel if an Intel chip, gives the CPU to run within. The 2600X has a higher TDP as it is binned to be more overclocker friendly, but the 2600 is a normal chip that has a lower TDP and that will affect PB2 boosting as it the extra 30 watts I have over your CPU gives it more room to boost, not that it boosts much more over yours. When I use HWinfo it logs 95 watts and bounces all over the place with an avg of 84 watts.

https://www.dropbox.com/preview/Screenshots/Screenshot%202018-10-04%2016.49.17.png

I would install HWinfo and monitor your CPU for a day and see what it does then post that here.
 
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t99

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I figured it out, damn windows power settings. It was running good before I changed power setting to max power. I did not know that putting on max power would auto boost all my clocks. i am getting consistent usage under max load now as well. if i do a cpu z benchmark that starts multi-core and moves to single you will see it go from 3.4 or lower now to 3.75 on all cores and then to 3.9 on one core. I need to find the right balance now. I ran across this randomly while noticing EDC power was always really high, searched and found out change plan to balanced.

I don't like the windows power plan, i might just have to manually adjust my clocks. I am using a desktop and could care less how much power it uses, i just want my cpu usage normal and consistent, but i don't want the other negatives from the power plan. at least it's solved.
 
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agentnathan009

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Interesting, now I want to play with those Windows settings to see how it affects my PC.
 
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t99

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Definitely seems better after some heavy use since fixing this. I kind of wanted it to run at 3.4 all the time like before and boost as needed, but I like this better. Make sure you adjust minimum processor state. Mine was at 90, now it's on 10 and idles at 1500mhz, boost up to 3.9 as needed..

Still not sure how the precision boost works I thought it was 3.75 on all cores and 3.9 on one, but I've been noticing sometimes 3.9 on 2 or all 4. Guess it's all based on what. Is needed and headroom
 
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agentnathan009

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PB2 has sort of a slope that peaks at 4Ghz or so for 2600 when loading 1-2 cores and tapers down to roughly 3.7 for all cores loaded and depending on your cpu cooling capabilities. If your cooling is great then you run into power and current limits on cpu package as defined by AMD for safe 24/7 operation.
 
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t99

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Would you happen to be familiar with EDC %? You will see this in ryzen master and before adjusting the power plan I noticed it was always 90% or higher, but it would say something like 90% of 90A, Limit of 160A. I'm guessing being at 100% is totally fine since it would mean 100% of 90A, but I can support up to 160A?
 
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agentnathan009

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Mine runs around 70% of all three of those metrics with them being 128watts, 80 amps sustained, 125 amps peak current limit. According to HWinfo my peak core current has been 60 amps. I would like to know how you are getting 90% of those limits!


90 amps would be your sustained limit and 160 amps would be a short spike of power.
 
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t99

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i'll get some screenshots later. since changing the power it idles around 15-25% now, but if i move a bunch of browser tabs around fast it goes to 99. what psu and motherboard do u have? i have a corsair 750w and tomahawk b450. maybe it just has a lot of headroom and uses more power when it needs it?
 
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agentnathan009

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Using a Corsair 600 watt that is pulling 290 watts or so at the wall. I have an ASUS ROG Crosshair Hero VII (Wi-Fi) motherboard. The 2600X is supposed to boost higher than a 2600. I fiddled around a bit with setting and it seems that it is stuck around the 70-75% area of the Ryzen Master electrical values.
 
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