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AMD Ryzen 7 5800X 3D Cache Eight Core 4.5GHz (Socket AM4) Processor - Retail - Go Go Go xD

Noticed my vcore voltage is going a bit lower than most here which is probably why my temps are quite low for an air cooler. I get a pretty steady 1.188 gaming wise and goes down to 1.169 under full load. Idle temps are between 29-33, gaming is low 50's to mid 60's depending on CPU load and Cinebench was a max of 75. Did initially have a play around with LLC but that was more of a detriment over using PBO2 Tunner so put it back to auto.

While it goes against my tinkering nature, as what Jamin says above, best results I've had with my system is leaving everything bar XMP set to auto in bios. That's on an MSI board (did play around with Kombo Strike but was mixed at best for me and my cooling solution).
 
Right, I've just installed mine.

Are we of the general view that a run of Cinebench R32 is going to be the absolutely best test to determine worst case scenario max temps?

So with my Alpenfohn Brocken 2 PCGH Edition Dual Fan, I'm idling around 34-36.

During a Cinebench R32 run, I'm seeing peak of 82, which I'm pretty happy about if Cinebench R32 is the most extreme stress test you can do.
 
Oh you could definitely put a higher thermal load on you CPU using Prime95 or OCCT (and I guess you could use OCCT's linpack test to really dial in each core offset) but the heaviest workload my system is ever going to see outside of games is InDesign or Illustrator which barely touch the CPU at all. Spider-Man and Cyberpunk have been the heaviest and hottest loads so far, even the shader compilation for Uncharted, which pegged 8 cores to max for about 5 mins, topped out at around 64-65 degrees for me.

Thermal limit by default is 90 degrees by the looks of things.
 
Using PBO Tuner at -30 and in Prime Small FFT Test I'm bouncing around 83, so under the 90 limit. Given that this is about as extreme CPU temps will get, I'm happy with that!

Will stress test the -30 more and then look to apply it at start up.
 
Prime 95 small FFT is nuts I haven't used it in years. Had an overclocked 4790k back in the day. Stressed in cinebench and Aida it was sitting at 70, games between 50 and 60.

Prime 95 thought it would touch 90. Pointless test really unless your job is running prime 95 you will never need that test.
 
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Temps around 73 and all cores pegged at 4449MHz in Cinebench.

That's enough tinkering for today.

I'll probably keep an eye out for an AIO over Black Friday or treat myself (again) after Christmas to get those temps in check. It's ok now but maybe not if we get another summer like the last one!
 
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DomBruv said:
Just upgraded from the 3700x to this chip, is it worth doing this undervolting thing at -30? if so what does it actually do and what am i setting to -30?
Click to expand...
I found it essential. Knocked temps down from thermal throttling at 90 to under 78 (in stress testing, much less in games).
You are reducing the amount of voltage (power in the end) by 30 milivolts each core can draw. Making it run cooler.
Is that right folks?

If traditional overclocking is raising the frequency and the voltage. This is reducing the voltage and maintaining the same frequency.

Guide https://github.com/PrimeO7/How-to-u...X3D-Guide-with-PBO2-Tuner/blob/main/README.md
 
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Yup, it dropped my all core load temps by 10 degrees. So Cinebench went from 83 to 73. In Prime (just to generate max heat), temps were hitting the 90 limit and cores were throttling in response. With this, I'm now around 83. I've not checked gaming temps yet they should be much lower.

I'll be playing COD later this evening so will have temps monitored in the background and also to check performance.
 
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beany_bot said:
I found it essential. Knocked temps down from thermal throttling at 90 to under 78 (in stress testing, much less in games).
You are reducing the amount of voltage (power in the end) by 30 milivolts each core can draw. Making it run cooler.
Is that right folks?

If traditional overclocking is raising the frequency and the voltage. This is reducing the voltage and maintaining the same frequency.

Guide https://github.com/PrimeO7/How-to-u...X3D-Guide-with-PBO2-Tuner/blob/main/README.md
Click to expand...
Thanks for the info, did you use the same guide?

I don't like how we cannot set this in the bios and have to rely on a startup program to change this value on each sign in/boot.
the software itself I'm guessing uses some processing power to run?

Thanks again
 
doodah said:
Hhhmm might need to fiddle with my fan curve, not sure what to make of these results.



It is however idling lower than my 3700X.

Edit - I clicked apply in PBO2 Tuner, and the consoles shows it applying.
Click to expand...
Which cooler are you using?

If you have a Gigabyte motherboard you could try setting core voltage to 'normal' instead of 'auto'. Gigabyte likes to overvolt compared to other manufacturers which can cause problems. Gamers Nexus confirmed that they were overvolting the 5800X3D compared to MSI.
 
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beany_bot said:
I found it essential. Knocked temps down from Thermal throttling at 90 to under 80 (in stress testing).

Guide https://github.com/PrimeO7/How-to-u...X3D-Guide-with-PBO2-Tuner/blob/main/README.md
Click to expand...

DomBruv said:
Thanks for the info, did you use the same guide?

I don't like how we cannot set this in the bios and have to rely on a startup program to change this value on each sign in/boot.
the software itself I'm guessing uses some processing power to run?

Thanks again
Click to expand...
I followed the guide. works flawlessly. It annoyed me too, but as nothing visible is happening (it doesnt physically load the program to see on desktop / menubar) you will soon forget its happening at all and it will just work.
 
ltron said:
Which cooler are you using?

If you have a Gigabyte motherboard you could try setting core voltage to 'normal' instead of 'auto'. Gigabyte likes to overvolt compared to other manufacturers which can cause problems. Gamers Nexus confirmed that they were overvolting the 5800X3D compared to MSI.
Click to expand...
Alpenfohn Dolomit Premium and on an Asus CH6 x370. I've since had to do a fresh install of Windows, same issue when I try -20.
 
DomBruv said:
Thanks for the info, did you use the same guide?

I don't like how we cannot set this in the bios and have to rely on a startup program to change this value on each sign in/boot.
the software itself I'm guessing uses some processing power to run?

Thanks again
Click to expand...
The software only needs to run very briefly to change the settings so the processing power doesn't matter. If you have an MSI board you may be able to do the same thing in BIOS by setting Kombo Strike to level 3. Only shows up on the latest BIOS for me on the X570 Tomahawk :)
 
stooeh said:
The software only needs to run very briefly to change the settings so the processing power doesn't matter. If you have an MSI board you may be able to do the same thing in BIOS by setting Kombo Strike to level 3. Only shows up on the latest BIOS for me on the X570 Tomahawk :)
Click to expand...

Oooohh.

I have an MSI MPG B550 Gaming Plus motherboard. Might need to have a poke around the BIOS and see if it's in there. If its not, there's another newer BIOS available to download that might have that feature. Mind you, PBO2 Tuner is working nicely for me, so would be reluctant to change anything in case it breaks.

​

 
doodah said:
Alpenfohn Dolomit Premium and on an Asus CH6 x370. I've since had to do a fresh install of Windows, same issue when I try -20.
Click to expand...

Make sure you go into BIOS and set BIOS to "Load Optimised Defaults". This should reset/restore the BIOS. Also, leave everything to Auto and just get into Windows and try PBO2 Tuner then.

If you've manually adjusted settings with the the previous CPU and then just dropping the 5800X3D in could result in conflicts.
 
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