Checked today for my mobo B550 Aorus Pro AC and was happy to see a new bios with 5800x3d performance improvements.

• Update AMD AGESA V2 1.2.0.8

• Optimized performance for 5800X3D

Thank you gigabyte! Now I no longer need to use the PBO2 Tuner app, enjoying good temps on linux right now.

Recently experimenting with undervolting my 5800X3D. Temps are roughly 10C cooler and it clocks slightly higher all while drawing less power. I am using PBO2 Tuner at the moment, but I would love to actually set voltage offsets from my BIOS. From my understanding somehow it's locked/unavailable for the 5800X3D, but some people got it working by loading a BIOS profile for their old CPU (see this thread). Does anybody know if there's a workaround? I am running ASRock SteelLegend B450 Motherboard (P4.30). Does anybody have a fitting CPU profile I coud load to "unlock" PBO settings? Or maybe there's a new firmware version that fixed this?

The Asus Crosshair line got the new Bios Update and AGESA version Combo V2PI 1208 enabling Core optimizer by default. Rejoice!

Since the 5800X3D does not boost so high i saw many people run a -30 Curve optimizer all core without issues. Currently testing it is looking good so far.

Anyone using 5800X3D with curve optimizer can confirm -30 running stable?

Bought a 5800X3D during last year's black friday sales. Been using it bone stock aside from XMP and coupled mode being enabled. Performance has been great but it has been running incredibly hot and not meeting estimated boost targets. Didn't really bother me because my framerates were already very high at the settings I prefer so I kind of forgot about it. However Gigabyte recently released a beta BIOS for my board that enables curve optimizer for the 5800X3D and it got me interested in testing some undervolts.

Tested in -10 increments, each with a 24hr CoreCycler run and 24hr desktop stare. Each time passed with no problem. I'm now on -30 offset on all cores and it still doesn't fail during CoreCycler/in-game or just idling at the desktop/youtube. However I understand achieving -30 all-core is incredibly rare and almost certainly results in some clock stretching. However during CBR23 runs I'm getting an all core score of roughly 15200 which seems in line with a successful -30 curve. All cores boosting to 4.45GHz consistently and temps are far, far lower.

I'm familiar with GPU overclocking and understand that pushing the memory too hard, even though it might function, incurs a performance penalty in the form of increased error correction. Is something akin to this possible when applying an overaggressive Zen3 CPU undervolt? How can I tell if my -30 is actually hurting performance aside from testing every step and confirming nominal vs effective clockspeed in HWinfo? How rare is a successful -30 all core anyways?

Hello guys, I want to start by saying that I'm Italian so sorry if my English is bad :D
Moving on, this is my configuration:
Mobo: X570 Aorus Elite
CPU: Ryzen 5800x
Cooler: Noctua NH-D15
Case: Cooler Master H500P Mesh (meh) with an additional Noctua 140mm fan on the top as Intake

I've looked into undervolting in order to get lower temps, I was going on 90C running a MC Cinebench R23, I know that 5800x is a hot boi but those temps were too high for me. (If you want to know the score, I don't have it, I've never ended a run due to reaching 90C)

So I've undervolted with PBO in the bios, setting all cores negative curve with a value of 25 in the Curve Optimizer Magnitude field;
Now I'm on 84C running a MC Cinebench R23, with a score of 15798 and clocks between 4849-4851 Mhz;
On a single-core run I've scored 1603 Pts at 49-51C;

Now I'm curious about 2 things:

1. I've heard that in MSI Bios every unit in the Curve Optimizer Magnitude field equals to 3 to 5 Millivolts, is It the same in the Aorus Bios?

2. Someone had the same issues/went through the same procedure? What values Have you put? Did you set the curve for all cores or have you set different values per core(s) ?

Thank you in advance guys <3

utility is in this thread: https://www.overclock.net/threads/5800x3d-owners.1798046/. you can only set offsets, cannot adjust power limits or max boost (which is to be expected).

applied a lazy -15 offset to all cores, stress tested with occt core switching for stability (stable), did a few runs with cinebench.

before, I hit 90C before the first render in cb23. now, the CPU stabilizes at 82C after 3 renders.

benchmark scores are also a decent 2-3% higher.

absolutely insane.

Hey everyone, I recently purchased a 5800X3D, to put in my asus B550 Gaming-f wifi. I've set up the CO on the bios, but I have no idea whether it's working or not. I don't notice it boosting beyond 4.5, nor I see a decrease in temps. Am I doing something wrong?

As the title states, should I be able to achieve -30 on every core on the per core setting? I noticed in my web research that many are not able to hit -30 on the per core setting like I have it set at. I am happy with my temps and my performance. Cinebench r23 hits 16200-16300 now on multi and my temps hit 77c under load (cinebench) and low 30's-50c normal workloads.

Note: about a month ago when I started adjusting the curve optimizer I could hit -30 all core but nowhere near on the per core method.

Arctic Liquid Freezer ii 420mm on the way, will start maybe pushing things some more once installed

Settings ( I think matter ):

pbo manual: 138 - 95 - 120

curve optimzer: per core, every core set at -30

pbo scalar on auto and no extra boost mhz

cpu voltage - manual: 1.35v soc voltage - manual: 1.25

cpu load line cal: 1 step above auto(medium I believe)

soc : 1 step above auto(regular I believe)

cpu: R7 5800x

mobo: asus x570-p

psu: evga p6 1000w

cooler: cheapy 240mm coolermaster aio

memory: g skill ddr4 ripjaws 3600mhz (timings slightly tighter than xmp)

Better temperatures, voltages and results...