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!

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.

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

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?