Hi guys,

I bought a 7800x3d, and so far I really enjoy it. I'm trying to set PBO + curve optimizer and coming from a 5900x and reading a lot of guides, it looks like best cores should not be able to have lower negative offset than the other ones. But so far my settings are:

core 0 -30

core 1* -35

core 2 -30

core 3** -30

core 4 -30

core 5-30

core 6 -20

core 7 -30

According to Ryzen Master, my best core is core 1* and second best is core 3**.

I rigorously tested these settings with OCCT, prime95 overnight and corecycler, an I had no errors.

So my question is, is it normal that my best core can handle such a low negative offset, lower than the "regular" cores? Also, for core 6, I couldn't get lower than 20, as it gave me errors. That is weird because according to OCCT, it should be the worst core out of them.

Thank you for your answers!

Asking because it seems while browsing that most of them can't achieve anywhere near that and I want to make sure I'm not just hallucinating stability as it's my first Ryzen system ( last AMD system was an Athlon that served me well ).

Here's how it went. I first updated the bios to the latest version from MSI. Then installed Ryzen Master and Cinebench R23 as well as several other stress tests like Prime 95, AIDA, etc. I have the CL30 6000 ram on EXPO settings ( VDDIO lowered to 1.3 manually, EXPO had set it to 1.4 :/ ), also set memory context restore to enabled for the absurdly faster boot times.

Went in -5 steps on the curve optimizer, ran the included Ryzen Master "stress test" for stability, then ran a Cinebench with all apps I could stop stopped in windows for ideal replicability of results ( cinebench results can fluctuate quite a bit even doing this ), anti virus off and everything I could think of.

Noted the results and kept going on with more -5 steps. Turns out that -30 is where if I go any further, I start getting consistent performance degradation. -25 will get worse results, same for -28, -35 and -32.

After that I ran a suite of Prime 95, AIDA, IBT and as many other stability stress tests I could. Then ran a few games ( Helldivers 2, Rimworld, Baldur's Gate 3 and a few others ), browsed, used handbrake and encoded a few videos with AV1, H265 and H264. Watched a few videos on youtube and MPC-HC and finally let it sit idle overnight with only HWinfo64 pinging the processor every 5000 milliseconds for info.

It's only been 24 hours and not a single crash yet. crosses fingers

Is there anything else I should look out for as far as voltages, settings, stability testing goes?

Any particularly finicky apps/games that are more prone to detect instability?

All counsel and tips would be greatly appreciated!

EDIT:

Thanks for the all the feedback. I'll put it to good use! :)

PC components: 7800x3d, 7900xtx, 32gb ram corsair vengeance 6000mhz cl30, Gigabyte b650 aorus elite ax rev 1.2.

I built my first pc couple of weeks ago and I limit vsoc to 1.2njust for precaution and saw many posts about the PBO and curve optimizer so I set it to -20.

I know CO allows my cpu to run beyond its limit for better performance, but what exactly does it do?

• Does it affect performance in gaming?

• Does it lower temps or increase them?

• Does it affect the cpu lifespan?

• Difference between negative and positive offsets

• And most importantly do I really need it?

Thanks a lot and sorry for asking too many questions!

Hello everyone.

Just performed some tests on my 7800x3d and i wanted to share some results from Cinebench.

Cooler: Dark Rock Pro 4 - fan curve set to Standard

Case: Pure Base 500 FX

MB: Asrock X670E Steel Legend

Results:

• CO disabled: 17473 points, max. temperature (c): 88.1, boost clocks 4.8 GHZ

• CO enabled (-30 all cores): 18190 points, max temperature (c): 84.4, boost clocks: 5 GHZ

I can't seem to find the option to run the auto core optimizer on Ryzen Master with my 7950x3d. Not sure if it's because it's not supported or something else. If someone could let me know that would be great.

Hi all,

My 7800X3D is currently scoring slightly below 14k on TimeSpy, ~18,300 on Cinebench R23. Decent scores, but was hoping to squeeze out a bit more with some UV / OC magic.

In my BIOS I YOLOed the curve optimizer all the way to -50; figured I'd let it crash and work my way up from there.

But nothing changed. No difference in thermals, no instabilities, benchmarks all the same. I opened Ryzen master to try and load the BIOS settings and it keeps telling me that CO is turned off even though it's very clearly set to 'all core -50' in BIOS.

Am on latest chipset drivers as well as bios.

What gives? Anybody have any thoughts? What's a good way to verify my CO settings?

Hello, shortly I've 7800X3D with -40 CO all cores right now, I know it's unstable on OCCT and other stability stress SWs, but on the other hand cpu running normally, rendering on vegas/premiere pro is fine, pc never crashed ever, all games working fine.
Wowever there was that comment on subreddit said something about self correcting or self correction, I really don't know what's happening there, and surely don't know if i'm somehow making my pc lagging instead of making it smoother.
My 7800X3D runs on CPUZ stress/ Furmark CPU Stress with 5050mhz all cores

And yea I'm also thinking about upgrading to 9800X3D and pushing it to 5200mhz all cores at least or 5400mhz all cores with +200mhz OC and -30/-40CO All cores (maybe i'm crazy) but i need more fps in FPS games (valorant/marvel)

Hello, I come to you because I encounter a problem with the PBO and the curve optimizer on my 7800X3D, in fact as soon as I modify the curve optimizer to put it at -10 (low value) on all core, the system is unstable and cinebench 2024 crashes, windows is not stable either.
When I look online, guys advertise a curve optimizer at -30 (or more) without flinching and without doing anything special.I'm not sure what I'm missing or setting wrong, unless my CPU is really bad.
Do you have any ideas that could help me move forward?
Thank you in advance.

Case : Corsair 7000D AIRFLOW
CPU : AMD 7800X3D
AIO: Corsair iCUE H170i Elite CAPELLIX XT
MB : GIGABYTE X670E AORUS MASTER Bios F21a (tried with F20 and F13)
Ram : Corsair 2 * 16 GB CMK32GX5M2B6000Z30
Video : GAINWARD Phantom 4090
PSU: Corsair RM1000x Shift