Undervolt 5800X3D

[Fielder 3,701]

There is a PC app made for undervolting that cpu. I used it right after installation of that cpu a couple weeks ago.

I'll find the thread. Oh, one link in the message thread is broken so I will see if I can find it.

 

[cianpars 1,172]

2 minutes ago, Fielder said:

There is a PC app made for undervolting that cpu. I used it right after installation of that cpu a couple weeks ago.

I'll find the thread. Oh, one link in the message thread is broken so I will see if I can find it.

 

You may be referring to Ryzen Master, which I did have on my PC at one time, though not sure if I uninstalled it.  I will take a look, but your suggestion reminded me.

[Fielder 3,701]

Here's the thread.

https://github.com/PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner#5-how-to-set-pbo2-tuner-manually

here's the new link to debug-cli.7z, download icon is top right.

https://drive.google.com/file/d/1OswZcZ72jhm_Neek9c7PV-aRhM1EuOrX/view

I'm using -30 on all cores. The thing to do is to use this argument when running it with a shortcut instead of directly:

-30 -30 -30 -30 -30 -30 -30 -30

One click on the shortcut and you set -30 on all 8 cores.

Edited September 8, 2023 by Fielder

[Fielder 3,701]

You may be able to use -45 on all cores. Ryzen Master I use to test the results by gradually using -05 more each core for each test. I don't use Ryzen Master to change things, just to test things. I set things with debug-cli pbo tuner.

I'm using -30 all cores. One mouse click on the shortcut I created with the long argument to set -30 on each core.

[sonny147 582]

these boys will put you straight , best forum without a doubt even with the odd argument lol 

[mrlip 56]

1 hour ago, Fielder said:

You may be able to use -45 on all cores. Ryzen Master I use to test the results by gradually using -05 more each core for each test. I don't use Ryzen Master to change things, just to test things. I set things with debug-cli pbo tuner.

I'm using -30 all cores. One mouse click on the shortcut I created with the long argument to set -30 on each core.

Yep that is what use as well. -30 all cores set via an argument on a shortcut. 

[Claudius_ 326]

I'm very happy with the Noctua DH15 cooler, it worked good before with a 5800X and now a 5900X. I decided to not buy the 5800X3D because it's slower in the normal apps like photoshop or resolve, the 5900X is a very good compromise with 64MB cache and very nice performance with 12 cores in FS20, 24 threads work better than before and never had any slow down in the sim. I tried to play with undervolting at -25 all cores and it worked flawlessy over 5075MHz. But the fps gain in FS20 was ridicolous, so I run it at stock frequency, the PBO enabled in the bios is pushing at about 4950 MHz. Normally, with a 30°C ambient temperature the 5900X is not going over 65/70°C when running FS20.

[Fielder 3,701]

Ryzen 7 5800X3D. MSFS runs temps about 68-77, never has hit as high as 80. Right now its 54 C, not running the sim.

One 120 mm H60 Corsair fan. With $30 Noctua 3000 rpm fan (I through the Corsair fan away right out of the box. It's a good fan, but with one 120mm radiator I wanted a better one). Using stock fans, at least a 240 mm radiator may be required. My case is small, room for only a small radiator.

If a  3DX cpu is overheating, something must be wrong with the cooler. That cpu draws way less power than Intel's do.

 

 

[Maxis 1,886]

47 minutes ago, sonny147 said:

these boys will put you straight , best forum without a doubt even with the odd argument lol 

I agree.. There are differences in implementation ( for example i set my stuff up manually old school via the mb bios vs using an app like fielder) but the general idea and resulting output is correct.

[Ixoye 1,832]

Your CPU should handle Cinebench R23 benchmark for 10 minuts without throttling, if it doesen't, something is wrong with you cooling. 

[Sky_Pilot071 580]

If ambient is 30C I wouldn't even turn on my PC with the best cooling.

sp

[sonny147 582]

43 minutes ago, Sky_Pilot071 said:

If ambient is 30C I wouldn't even turn on my PC with the best cooling.

sp

lol , yep we british this is unusual  for us this time of year , people shouldnt jump to high pc temps all of a sudden, lol 

[Greggy_D 937]

What stock cooler?  The 5800x3D doesn’t come with a stock cooler. 

[Fielder 3,701]

If you're going to optimize in bios, then Steve 86 message has a good video to follow.

EDIT: that video was for a different cpu. this is probably more to the point. Just a simple voltage reduction. Very conservative.

 

For a few years, I always run "core temp" which boots up when the computer is turned on. It is tiny and uses almost no resources. A little window shows the cpu temp. It hides in the taskbar.

Edited September 9, 2023 by Fielder

[Fielder 3,701]

If you add a watercooler without having had one before, watch youtube videos about routing the water tubes. There're right ways and wrong ways, having to do with gravity.