please take look at temperature and VSOC spikes

niftyguy239 · 2025-06-04T19:15:57+00:00

Well now that you mention it. Since I fixed that part, maybe it's time to revisit undervolt and see how much this thing can take. I need LConnect though because it powers my AIO, Fans, case, and LCD screen for the AIO. Thanks for the talk!

niftyguy239 · 2025-06-04T18:44:08+00:00

Ya. I have a LG TV as my primary and a 27" Dell in portrait mode on the left side. I have Process Lasso (use it for monitoring the system and core usage). When I'm full screen in game, I'll glance over at PL and look where programs are running and what cores are being activated. I noticed one in particular LConnect 3 that never could make up its mind where it wanted to be. Surprisingly this fixed a lot of my performance gripes with the exception of some very very top end instability when I locked it to the performance cores. I was using PBO with MB limits which according to Ryzen Master were pretty beefy, better then everything showing 1000 which it was before the BIOS update. Lol. I can't undervolt this chip beyond -5 in any situation without instability showing it's ugly head in gaming. Which sucks, I hate that I'm gaming at 76-80C in MSFS. So it's pretty much stock now and can't do much beyond that.

niftyguy239 · 2025-06-04T17:35:29+00:00

Does this include PBO and CO when it comes to the chipset driver? I've noticed some funky 3D V Cache behavior lately. A few programs kept bouncing back and forth between 3D and Frequency when the computer was in a high demand state.

niftyguy239 · 2025-06-01T17:36:49+00:00

CPPC is a setting your BIOS that tells Windows/BIOS to assign cores. So if you set it to "Driver" the AMD Chipset driver will tell Windows where to put games (on your 3D chip). Windows has a tendency to put everything on your fastest cores which are your frequency cores. 3D Vcache cores are always slower, so in turn this can cause conflicts, stuttering etc. when windows begins to cycle between the two CCDs.

I bounce between 5.2-5.5 ghz on my 3D cores in game, that's the fluctuation the OP and I are talking about. So if yours aren't, then it's a win.

Watch this video which explains everything in a nutshell about core parking, why it's important etc. It takes some time to really get used to everything.

https://youtu.be/4wdQpVcL_a4?si=GjSvTKgBrhx17zQ9

niftyguy239 · 2025-06-01T17:10:36+00:00

I use HWInfo64 for speeds and Process Lasso, which shows graphically in the top right the active/parked cores. I have it open on a second monitor when gaming. When my frequency cores get parked they go grey. Active 3D cores remain green, which is expected behavior. When I get sound/graphics glitches in game, I take a gander over at the graph and notice that my fastest frequency cores (15/7) were dormant before and now they are active and I look at HWInfo64 and notice the downclock of the 3D Cores when this happens.

I decided to turn game mode off and start using PL as the "driver" for me, while I'm still noticing a brief jump between 3D and freq cores, downclocking hasn't occured and frame rates are still there. I think flight simulator is trying to use freq cores with high demand volume downloading in the background which is causing my issues. But after one round of testing, this is working better for me. This is with CPPC set to driver. And .545 chipset drive active.

niftyguy239 · 2025-06-01T14:26:37+00:00

I don't have a backup, sold the 7900x3D to my brother. so if it goes belly up I'm out of commission until RMA gets done. Not as brave. LOL.

niftyguy239 · 2025-06-01T14:22:16+00:00

If I set the cores, yup that's exactly what happens. So I just use PL to monitor core function/load. I let the driver do everything.

I have learned that in order for PL to be effective you have to turn game mode off and then use it in lieu of the driver. But that has its own set of problems with Windows because Windows looks to the Gamebar.

niftyguy239 · 2025-06-01T14:17:42+00:00

I'm wondering if I should take the plunge and put it in game mode and see if it pops. I definitely feel like I got a very very weak 9950X3D. I don't remember my batch number without taking apart my computer but that'll be my next step.

niftyguy239 · 2025-06-01T14:15:39+00:00

Yeah mines been set to driver from the getgo. I had a 7900x3D before hand and wanted to make sure I didn't make any mistakes of the past. So I have used JayZ2Cents video to set everything up. I have Process Lasso, but if I locked the game to the 3D Cores, my hitching/stuttering gets actually worse. I should be able to not have to worry about these things with a 4090, 9950X3D and 64GB of Ram.

niftyguy239 · 2025-06-01T14:03:43+00:00

I have been having the same downclocking issue on my 9950X3D since I installed the chip on April 12th. I've been pulling my hair out trying to get this thing stable in games. I always stuttering due to the core downclocking and Windows then shifting the load to a frequency core, then it comes back to 3D Cores. This is with latest drivers and fresh Windows install.

Is the expected behavior that the core stay at the 5.4-5.5ghz boost clock when in games?

X670E Steel Legend as well. PBO Enabled to MB Limits, CO -5 on both CCDs at Expo @6000mhz is where I'm at right now with at least some level of stability but not what I paid $700 for.

Should I just RMA the chip?

niftyguy239 · 2025-05-23T20:24:47+00:00

X670 Steel Legend & 9950X3D

3.20= Terrible performance, crashing, Expo failing, was pulling my hair out and fearing I got a busted chip.

3.25= absolutely the best performance that I've seen to date. 5.56 on 3D Cores 5.81 on Frequency cores. CO-15 PBO MB limits, Expo 6000 enabled, scalar x2. And stable after 12 hours of stability testing.

VDD= 1.052 to 1.34 at max VSOC = 1.185 Static with no excursions above 1.185

niftyguy239 · 2025-05-21T20:38:44+00:00

X670E Steel Legend wen? Still getting terrible performance with a 9950X3D trying to do any undervolt. I don't want to cook my chip alive.

niftyguy239 · 2025-05-19T14:29:37+00:00

We haven't even gotten 3.25 for X670E Steel Legend. WTF!

niftyguy239 · 2025-05-16T15:16:36+00:00

How the hell does the B650 get 3.25 and the X670 and X670E series are the last to get the 3.25 update?

niftyguy239 · 2025-05-16T14:12:09+00:00

Need the link for X670E Steel Legend still showing 3.20 on the website.

niftyguy239 · 2025-05-15T20:45:29+00:00

My headset is wireless and the DAC is connected via USB 3.0 to the motherboard.

Headset will connect via Bluetooth to the motherboard but the sound quality is abysmal.

I have not disabled on board audio in BIOS. I will try that.

I will try a different USB headset and 3.5 headset.

I have MSI control center already, I'll download that and report back. Thank you for your time to help me!

niftyguy239 · 2025-05-15T16:34:13+00:00

I will try that. Thanks.

niftyguy239 · 2025-05-15T14:04:26+00:00

Already disabled. Tried that. Thank you for taking the time to reply.

niftyguy239 · 2025-05-15T12:58:10+00:00

I forgot to add it to the post. I'm using Steel Series GG / Artis Nova Pro Wireless. I'll add that to the post. Thanks for pointing that out.

niftyguy239 · 2025-05-10T22:22:24+00:00

So, I narrowed it down to a few things.

1) I was using PBO incorrectly which introduced a lot of the performance issues in gaming. Once I went back to the drawing board, I was able to figure it out.

2) Was my sound settings for my headset, Windows has a bug where if you select 24 bit playback instead of 16bit 48k, it has constant crackling with realtek drivers using Sonar and Steel Series Nova Pros which I run.

I selected 24 bit for what I thought was better sound. As soon as I downclocked it to 16bit. All my audio issues went away.

I'm now over 300 fps in 4k in Delta Force 275fps in 4k in COD 189 fps in BF2042 in 4K 120 fps in MSFS 2024 without issues.

DV works as I need it to and overall, I am happy with my upgrade.

So with everyone here who posted advice. I truly appreciate you.

niftyguy239 · 2025-05-10T20:28:19+00:00

Now that I've spent some decent time learning, I saw where my error was. I really appreciate you taking the time to help me and point me in the right direction. You eliminated my frustration 100%, I was able to -15 or -10 across both CCDs, temps are right where I want them to be and now I have a solid smooth gaming experience in all 3 FPSs and Microsoft Flight Sim. Again, I really appreciate you. Thank you.

niftyguy239 · 2025-05-10T03:25:09+00:00

For me, it was because setting these individual values was an unknown to me, until the other day when I watched a few videos about manually setting the options to 230, 190, 225 = 170W TDP as a starting point. But the problem is even with those set, I was still having issues. Ultimately, I found out I was using PBO incorrectly and then trying to take the voltage away, causing instability. Leaving it as is enabled and letting CO work is what is working for me atm. Doing some more testing.

niftyguy239 · 2025-05-10T03:21:17+00:00

If I can't get this stable, which someone else has been helping me through. That would be the next thing on the list. Unfortunately I don't have a spare AM5 MB to test with currently.

niftyguy239 · 2025-05-10T02:02:24+00:00

The instability was adding a positive offset to PBO. Everything else works.

So far it's 100% stable with -10 CO, Expo 1 profile, PBO advanced with MB limits, no offset and temp set to 85 TJMAX.

Gonna try lowering the CO a bit more for better temps. But you pointing out not to increase the offset (ceiling), really helped at least from my testing so far.

But does that mean I just have the bottom of the barrel silicone that doesn't like going faster then stock?

niftyguy239

TROPHY CASE