Doubt your stable, run corecycler set to use Ycruncher and see if any core fails, if they do, adjust the -co value, for example -22 to - 20 and retest. Negative co values let the CPU keep the same speeds or boost higher using less voltage and therefore less heat, Answer from Deleted User on reddit.com
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AMD
docs.amd.com › r › en-US › 68886-ryzen-master-user-guide › CPU
AMD Technical Information Portal
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Tom's Hardware Forum
forums.tomshardware.com › home › cpus
Question - Ryzen Master Curve Optimizer | Tom's Hardware Forum
September 6, 2024 - When entering them manually be sure to select the '-' minus offset and not the '+' positive. ... You can optimize your curves and it will give benefits. When I used the CO it recommended -30 across the board. I ended up doing -30 on all except for the 2 preferred (star) cores shown in Ryzen Master.
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H|ard|Forum
hardforum.com › [h]ard|ware › amd processors
Is Ryzen Master's core offset testing very unreliable? | [H]ard|Forum
August 15, 2024 - I've successfully passed 15+ per-core validation tests using the offsets of -50, -50, -50, -50, -50, -30, -30, -30. That's an average offset of -42.5. But I can't pass an all-core test of -38 reliably. So, that's a bit weird.
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AMD
amd.com › content › dam › amd › en › documents › products › software-tools › ryzen-master-quick-reference-guide.pdf pdf
AMD Ryzen Master 2.1 Reference Guide
WELCOME TO AMD RYZEN MASTER 2.9 · Curve Optimizer: • · After offset values are derived, user can choose to use a different · offset. • · Snapshot shows a scenario in · which “All Cores” mode is selected · and offset value selected is -2. • · User can validate this offset and ·
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Reddit
reddit.com › r/amdhelp › curve optimizer offset meanings?
r/AMDHelp on Reddit: Curve Optimizer Offset Meanings?
December 8, 2022 -

So when I do the auto curve optimizer, what offsets would be considered good to get? Currently I got a -28 offset on all cores on a 5800x and I honestly just don’t know what it really means or does.

Computer Type: Desktop GPU: GTX 1660 6GB CPU: RYZEN 7 5800x 8 CORE 16 THREADS Motherboard: AsRock X470 Phantom BIOS Version: 4.9 RAM: 32GB Kingston Predator 2666Mhz CL13 PSU: Seasonic 650W 80+ Platinum FULLY MODULAR Case: Phanteks P350X Operating System & Version: WINDOWS 11 Home GPU Drivers: GEFORCE GAME READY DRIVER - WHQL Driver Version: 457.51 Chipset Drivers: AMD X470 CHIPSET DRIVERS Background Applications: Windows and Nvidia drivers/apps

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Tom's Hardware
tomshardware.com › pc components › cpus
How to use Precision Boost Overdrive and Curve Optimizer to improve Ryzen CPU performance | Tom's Hardware
March 11, 2026 - Since our goal is to apply a negative curve offset, begin by selecting All Cores to reveal a new section called CO All Core Value. Next, enter a negative value. A good starting point would be –10 before gradually working your way to a lower value, as we don’t want to push the processor beyond its stability limits. After entering the value, click on Start Optimizing. The Ryzen Master ...
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H|ard|Forum
hardforum.com › [h]ard|ware › motherboards › amd mobos
What is the limit supposed to be for Curve Optimizer? (Gigabyte X870E Aorus Pro in this case) | [H]ard|Forum
November 27, 2024 - Ryzen Master is showing that it's still set at -50 all-core offset. I've rebooted multiple times and confirmed that it's set at -60 in the BIOS. So that leaves me wondering, if the limit is -60, or if it's actually -50. Is there a universal limit or is it board specific?
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GeekChamp
geekchamp.com › home › how to overclock your amd cpu using ryzen master
How to Overclock Your AMD CPU Using Ryzen Master - GeekChamp
May 16, 2026 - The simplest approach is to apply the same negative offset to all cores. Open Ryzen Master and select a profile.
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Make Tech Easier
maketecheasier.com › home › pc guides › how to overclock and undervolt amd ryzen cpus
How to Overclock and Undervolt AMD Ryzen CPUs - Make Tech Easier
January 18, 2024 - In Ryzen Master, do this by selecting Curve Optimizer in the profiles section on the left, then setting Control Mode to Default. Below that, Curve Optimizer Control will already be Included with Auto Offset turned on.
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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 suggested that we might have better success hitting higher clocks if we tweaked each core individually, so that's where we started. We already knew that Ryzen Master identified our processor's two fastest cores as Core 0 and Core 1, so they got the biggest negative offset to push for higher ... AMD's new AGESA update adds simple controls for complex overclocking and under-volting that can bring nice performance gains.
Rating: 5 ​
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Reddit
reddit.com › r/amd › my findings with the new curve optimizer with amd ryzen master
r/Amd on Reddit: My findings with the new curve optimizer with AMD Ryzen Master
April 17, 2022 -

So I have done about 9-12 hours extensive testings.

--

You WILL have to know your max PPT, TDC, EDC else this is just waste of time doing it and you will just be using default values which give you more aggressive under-volt than you might had opted before manually before using this.

Make sure to set those values in bios before moving on else you will just see default values in there no matter if you pick auto oc, or pbo, this was the case at least for me it would not pickup anything else than default values in software until manually set in bios.

So go to bios set values for those and set everything else on auto in PBO menu.


Verify and run a test just to verify settings are applied like on this screenshot, you don't have to run a full test if your settings where not added correct, go back and do it again.

My 5900X can handle these

PPT 185

TDC 125

EDC 170

Screen after completion..

https://i.imgur.com/otgetEQ.png

Video running test being stable for now and screen from HWiNFO just after finished tests.


Setup

5900X B0 Stepping early unit, not first week tho.

Asus x570-I ITX - Bios 4204 with AMD AM4 AGESA V2 PI 1.2.0.6b

3080 FE

16GB F4-3600C15-8GTZ

SF600

All in a loque ghost s1 case with some vector EK cooling setup on all parts.

All this was done by upgrading to latest bios, resetting bios to make sure no old values was stock and I only touched RAM timings with and dram voltage and PPT, TDC, EDC, PBO scalar x10, overclock 200mhz, rest was injected by ryzen masters into the bios settings after hitting apply.


Overall AMD have done a amazing job with this, even noobs can overclock and undervolt proper now 10/10 AMD clap clap

Do you wish to do it your self grab latest version here

https://www.amd.com/en/technologies/ryzen-master

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Reddit
reddit.com › r/amd › ryzen master setting -30 in pbo after a per-core analysis.
r/Amd on Reddit: Ryzen Master setting -30 in PBO after a per-core analysis.
March 9, 2023 -

Lately I've been toying up with PBO2 with my 5600X. I tried a quick and dirty all-core -18 and I noticed some instability (mainly in Hogwarts Legacy but also in Genshin) so I decided to try and use Ryzen Master and its auto curve optimizer. Chose to test per-core and after a hour of testing it came back with a -30 on all six cores. Is it really possible? Is it a bug? Am I misinterpreting what the software is saying to me?

For now the system seems stable but I've yet to test it with a longer session. On Cinebench R23 I lost a couple hundred points (~11.000 vs ~10.800) and it seems it doesn't like to go over 4,2/4,3 GHz but the system is whisper quiet and I can go a full run of multicore Cinebench and you wouldn't know it's running.

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H|ard|Forum
hardforum.com › [h]ard|ware › amd processors
Ryzen Master - PBO Curve Optimizer Control - Configure in Windows Now! | [H]ard|Forum
April 20, 2022 - It's an offset, so lower values = higher clocks at lower voltages. So using negative numbers, you are under-volting and essentially allowing the CPU to boost higher over the range of allowable voltages (up to 1.5V).
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Club386
club386.com › home › how to tune your amd cpu using ryzen master
How to tune your AMD CPU using Ryzen Master | Club386
May 19, 2026 - Ryzen Master has quite a busy dashboard, so if you need to see any of these screenshots in more detail, just click on them to see the full image. On the left side, you can choose CPU or RAM. Selecting the first leads you to a more detailed look at your CPU’s configuration, with detailed per-core clock speed, integrated GPU frequency, and Curve Optimizer offset ...
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Reddit
reddit.com › r/sffpc › ryzen curve optimizer
r/sffpc on Reddit: Ryzen curve optimizer
January 21, 2024 -

So first thanks to the few tips on the hardware choices, my terra build worked first time. 7900x, in eco mode, 32gb 6000mhz ram and a 6700x. All expertly built by my 9 year old, it was fun teaching about building computers.

I want to ask about this Ryzen tool that is supposed to automatically curve optimize. My system was stable in eco 105w mode, memory clocked at 6000mhz and the temps are cool - the heat sink cool to touch and ~40oC idle, all nice.

After the optimization finished I had to apply the settings it suggested -36. This made a bsod boot loop immediately after the sign in screen, kmode exception not handled. I had to clear CMOS to get back.

I confess even in my experience of 20+ years I've never really overclocked, I favor stability and don't like to push it if it's fast enough already. As I understand these curve optimizer settings aren't overclocking, but running at peak efficiency.

So what is the problem, the suggested settings are just way off? Do I even need curve optimization? I'm interested in cooler temps without changing the cooling solution and power efficiency.

I also read that we should have done curve optimization with a clear bios, I had eco mode (105w) and expo enabled in the bios?

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AMD
amd.com › https://www.amd.com/en.html › documentation hub
Documentation for AMD Processors, Accelerators, and Graphics
December 16, 2025 - Find solution briefs, datasheets, tuning guides, programmer references, and more documentation for AMD processors, accelerators, graphics, and other products.
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Hardware Canucks
hardwarecanucks.com › home › forums › pc builders & tweakers corner › overclocking, tweaking and benchmarking
Ryzen Master - Auto Curve Optimizer | Hardware Canucks
April 19, 2022 - That or they need to allow the ... using offsets. Hell even my s4 phone custom kernel allowed for this. ... I've mostly just been going about my normal usage and if a WHEA error is logged, I'll bump up that core. If the whole system freezes up, then the whole curve gets moved up. I guess Ryzen Master gave me the ...