Reddit
reddit.com › r/amd › 5800x pbo undervolting - curve optimizer magnitude
r/Amd on Reddit: 5800x PBO Undervolting - Curve Optimizer Magnitude
June 5, 2021 -
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:
-
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?
-
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
Top answer 1 of 5
5
So, it's been a little bit more than a couple hours, but here we are.So, for a recap, we started with: pbo undervolt - all cores -25 CB R23 MC = 15798 at 84CCB R23 SC = 1603 at 49-51C First of all, like Ben4425 said, I've checked the cooler and re-applied the thermal paste, using the 5 point method, gaining ~ 2C CB R23 MC = 15889 at 82C CB R23 SC = 1612 at 47-49C -4849 Mhz I checked what cores were the best, so i've set -10 for them and -25 to all the others R23 MC = 15794 at 82C R23 SC = 1593 at 51-53C - 4849 Mhz And then i've tried to lower the PBO Limits, ive started with: PPT: 142 - EDC: 120 - TDC: 95 R23 MC = 15775 at 81C R23 SC = 1605 at 51-53C - 4849 Mhz Then PPT: 130 - EDC: 120 - TDC: 95 R23 MC = 15478 at 81C R23 SC = 1599 at 51-53C - 4849 Mhz With those PBO Limits, i've tried to set the Boost Override to +100mhz, it was useless cause it crashed during the multicore;I've set PPT back to 142, crashed again, set all the PBO Limits back to default, crashed again.I think it depends on the overvolt curve that i did, maybe -10 on the best 2 and -25 on the others it's too much for sustaining the +100mhz I've set the PBO Limits back to PPT: 142 - EDC: 120 - TDC: 95, and Boost Override to +50mhz R23 MC = 15480 at 81C R23 SC = 1610 at 4899Mhz and 55C, with a spike of 68C where the windows scheduler went crazy and started to use other 2/3 cores other then the best two. So, at the end of day, I've decided to stick with this configuration:Curve Optimizer: -10 to the 2 best cores, -25 to the othersPBO Limits: PPT: 142 - EDC: 120 - TDC: 95Boost Override 0 I feel like I'm not losing too much on the MC, I've got one of the best SC scores and the temps were low.The funny thing is that the best scores and temps were obtained with -25 to all cores and default PBO Limits lol. Thank to you all guys for the collaboration, cheers <3 EDIT: viewing the guide posted by Ben4425, and seeing other tutorials, I think we can assume that the value of units in the Curve Optimizer Magnitude field it's the same for every Bios (3 to 5 Millivolts)
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i limited my PPT/TDC/EDC values in the bios, dropped from 95C to like 84C max, really effective
Overclockers UK
forums.overclockers.co.uk › hardware › overclocking & cooling
5800X PBO curve optimiser help please | Overclockers UK Forums
March 28, 2022 - I got no errors in the log down the bottom left (I assume this is where they should appear?). I then bumped PBO boost override up to 50mHz then 100mHZ with the same -30 and still got no errors in OCCT V10.1.5 but I started getting frequent BSOD crashes in Destiny 2. I dropped curve optimiser down progressively to -10 but still had crashes so I disabled the PBO boost override and now my system is stable after several 4 hour gaming sessions.
Videos
05:18
Quick & Easy PBO2 and Curve Optimiser Guide For Ryzen 5800X3D With ...
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AMD Overclocking - Curve Optimizer Explained - YouTube
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5800X 5GHz VS PBO 2 Curve Optimizer | RX 6900 XT | 1080p | Benchmarks ...
[Guide] Ryzen 5800X more performance with Curve Optimizer
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Ryzen 7 5800X PBO2 Curve Optimiser Settings + Benchmarks ...
Overclock.net
overclock.net › home › forums › amd › amd cpus
5800x high heat and curve optimizer | Overclock.net
ok this is my settings in PBO for now and it works. I can't set even +50 but will try again later. PPT: 142W TDC: 95A EDC: 140A Auto-OC override: 0mhz In curve optimizer I set my best cores to -15 and the other to -20. So far so good. My temp dropped a bit and I'm happy.
Reddit
reddit.com › r/amd › pbo & curve optimiser - ocuk forums - 5800x boost set to 5050mhz all cores with amd curve optimizer
r/Amd on Reddit: PBO & Curve Optimiser - OCUK Forums - 5800X Boost set to 5050Mhz all cores with AMD Curve Optimizer
November 10, 2020 - In the AMD overclocking section ,go to PBO and set your AMD curve optimizer up- this will give you normal boost clock EG:5800X boost to 4850Mhz In this section you can add up to 200Mhz it is the same for all motherboards EG: 4850Mhz+200Mhz=5050Mhz
H|ard|Forum
hardforum.com › [h]ard|ware › amd processors
Looks like AMD fixed PBO 5800X boost set up to 5050 Mhz with AMD Curve Optimizer | [H]ard|Forum
November 29, 2020 - AMD 5800X AMD Curve Optimizer Boost set to 5050Mhz for all cores and good temperatures when PC gaming. So basically when all things are good thermal,electrical ETC all cores have the ability to boost up to 5050Mhz.
Reddit
reddit.com › r/overclocking › pbo curve optimizer undervolt best settings for ryzen 7 5800x for higher fps
r/overclocking on Reddit: PBO curve optimizer undervolt best settings for Ryzen 7 5800x for higher FPS
March 31, 2026 -
Good day y'all ! I am done overclocking my RAM, so I also decided to go and ask you guys for the best PBO curve optimizer undervolt for my processor.
Thank you guys and have a good one !
Overclock.net
overclock.net › home › forums › amd › amd cpus
PBO+Curver Optimizer yielding WORSE performance | Overclock.net
October 29, 2021 - I get the best (real-world and unconditionally stable) performance out of my current 5800X setup with my curves between -28 and +7, with a +150MHz boost override and uncapped power. Higher boost requires worst curves to make stable, which costs performance, lower boost lets me use a more aggressive set of cuves, which helps very heavily threaded loads, but harms lightly threaded ones. It's a balancing act that is different for every setup. ... TLDR; I'm really confused how to make using a pbo offset & curve optimizer worth while over a manual all core 4.7ghz OC...
GitHub
github.com › PrimeO7 › How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner
GitHub - PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner: Get the Most out of your 5800X3D using PBO Curve Optimizer! · GitHub
Because the 5800X3D is very much locked down on most Motherboards thanks to AMD and the Motherboard Manufacturers, most people won't be able to set CPU Ratio and/or CPU Voltage in their Bios to get the most out of their 5800X3D. With this Guide, you will at least be able to tweak Things a little inside of Windows for potentially better Thermals and Clockspeeds that stay longer and more often at the highest they can be. Set PBO OC Curve manually after every change in Windows powerstate
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Reddit
reddit.com › r/amd › any way to enable curve optimizer for 5800x3d?
r/Amd on Reddit: Any way to enable Curve Optimizer for 5800X3D?
February 3, 2023 -
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?
Top answer 1 of 10
7
Have you updated to the latest possible bios? If there's no option (MSI gets kombo strike, Asus has a literal option for CO in AI tweaker).. just download PBO Curve Optimizer from GitHub here a guide with the links
2 of 10
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You have to use PBO2tuner.exe from Overclock.net I would prefer something more official, or at least from a verified publisher. But it is what it is.
HotHardware
hothardware.com › reviews › amd-power-curve-optimizer-guide-zen-3
Maximizing Ryzen 5000 Performance With AMD Curve Optimizer | HotHardware
Maximizing Ryzen 5000 Performance With AMD Curve Optimizer
AMD's new AGESA update adds simple controls for complex overclocking and under-volting that can bring nice performance gains.
guru3D Forums
forums.guru3d.com › home › hardware › processors and motherboards amd
Help with 5800x and precision boost 2 curve optimizer | guru3D Forums
December 11, 2020 - So yeah some of the 5800X chips pull a lot more so that becomes more difficult to manage. Not sure if a bios update can help here and using PBO and newer updates forcing a lower voltage and frequency through offsets could reduce performance trying to mitigate the higher temps by setting a more aggressive offset value but with a lower clock speed as a result.
Overclockers UK
forums.overclockers.co.uk › hardware › cpus
5800X Boost set to 5050Mhz all cores with AMD Curve Optimizer | Overclockers UK Forums
December 23, 2020 - Curve Optimizer. This feature enables frequency adjustment for each core in the processor without restrictions in BIOS. Not in Ryzen master yet or it could be I did not look. I can not explain it features cause I really do not know.I suspect ...
Tom's Hardware Forum
forums.tomshardware.com › home › cpus
Question - Recommend PBO Settings for Ryzen 7 5800x | Tom's Hardware Forum
August 17, 2023 - Each CPU is different, so its really gonna be hard to give a recommendation, Its something you will have to play with, you can play with the EDC, TDC and PPT settings and get cooler temps, but you could handicap the max boost speeds if too low. Curve Optimizer is also one of them things thats going to be different per CPU even if its the same CPU.
guru3D Forums
forums.guru3d.com › home › hardware › processors and motherboards amd
AMD Curve Optimizer 5800X 5100Mhz | guru3D Forums
October 23, 2024 - In the AMD overclocking section ,go to PBO and set your AMD curve optimizer up negative/positive this will give you normal boost clock EG:5800X boost to 4850Mhz In this section you can add up to 200Mhz it is the same for all motherboards EG: ...
Reddit
reddit.com › r/amd › 5800x amd curve optimizer
r/Amd on Reddit: 5800x AMD curve optimizer
February 26, 2021 -
Better temperatures, voltages and results...
Overclock.net
overclock.net › home › forums › amd › amd cpus
Point me in the right direction. r7 5800x overclock & PBO settings | Overclock.net
Setup: ryzen 7 5800x asus prime x570 mobo gskill rip v 3600 & 32gb cooler master aio 240 evga 650w 3060 ti ... Hello all, recently started tweaking the BIOS and seeing what kind of numbers I could get on cinebench. Highest I have achieved is 15,950ish. DOCP enabled, PBO on, curve set to all cores negative and 30, no extra boost mhz.
Linus Tech Tips
linustechtips.com › computer hardware › cpus, motherboards, and memory
Best pbo settings for 5800x? - CPUs, Motherboards, and Memory - Linus Tech Tips
December 17, 2022 - Just for transparency, my cpu isn't overheating and the most it will ever reach is 80 degrees (which will eventually drop itself down to 50-60s very shortly). And I've never used this tool before too. But I've heard that you can modify your pbo settings in a way that you still get good performanc...
GitHub
github.com › PrimeO7 › How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner › blob › main › README.md
How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner/README.md at main · PrimeO7/How-to-undervolt-AMD-RYZEN-5800X3D-Guide-with-PBO2-Tuner
Because the 5800X3D is very much locked down on most Motherboards thanks to AMD and the Motherboard Manufacturers, most people won't be able to set CPU Ratio and/or CPU Voltage in their Bios to get the most out of their 5800X3D. With this Guide, you will at least be able to tweak Things a little inside of Windows for potentially better Thermals and Clockspeeds that stay longer and more often at the highest they can be. Set PBO OC Curve manually after every change in Windows powerstate
Author PrimeO7
Reddit
reddit.com › r/amd › the power of a 5800x with pbo and curve optimizer!!
r/Amd on Reddit: The power of a 5800x with PBO and Curve Optimizer!!
July 10, 2021 - Im always far from better from another 5800x user but when I see their ram running 3800cl14 that is something. ... Great results dude. You got a great chip there. ... It's a mix of good silicon and proper settings. ... I have my 5900X at 5.1GHz using PBO with 3600MHZ CL16 memory. Not touched curve optimiser yet as I haven't really had the time needed.
Reddit
reddit.com › r › gigabytegaming › comments › 1b7v674 › 5800x3d_pbo_and_curve_optimizer
5800x 3D PBO und Kurvenoptimierer : r/gigabytegaming
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