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**AMD 9950X3D Owners Club**
- Thread starter The Asgard
- Start date
Don't forget to include the Karhu screenshot and also remember to hoover the mouse over the percentage to reveal the bandwidth output. Higher MBs = more performance from the tune.Karhu overnight zero errors, on to 8200
I'll run again tonight and post in the morning. Good job Apex comes with a RAM fan, the sticks remained at 55C
Soldato
- Joined
- 12 Feb 2014
- Posts
- 3,111
- Location
- Somewhere Only We Know
Got a pretty golden replacement from AMD, although it will do 8200, its not worth it, it needs a shed load more voltage to do it, I changed my RAM kit to a G.Skill 6000MT/s CL26 kit to see if it was the RAM, but looks like its the IMC, needs VDD bumping up to 1.62v, VDDQ 1.58v, VDDP 1.15v and VDDIO to 1.45v for 8200, not worth the extra 100mhz speed increase.
RAM passed 25 passes of TM5 1usmus profile and 9 hours of memtest pro.
Currently im working on the curves, I stopped at -28 for the 3D cores as they are running pretty cool whilst gaming and hitting their max boost speeds, so theres no point pushing those any further until I tune in the freq cores.
RAM passed 25 passes of TM5 1usmus profile and 9 hours of memtest pro.
Currently im working on the curves, I stopped at -28 for the 3D cores as they are running pretty cool whilst gaming and hitting their max boost speeds, so theres no point pushing those any further until I tune in the freq cores.
Soldato
- Joined
- 30 Sep 2005
- Posts
- 16,809
Hi All, wonder if you can help me.
I have a 9950x3d on a Asrock X870E Nova with the current 3.30 bios, RTX 4090 running up to date windows 11.
My cores weren't parking in most games, but I appear to have fixed this mostly by turning CPPC to driver instead of auto in the bios.
Games I have tried that are working, WoW, Diablo 4, Snowrunner and No Mans Sky.
The issue I am having is with The Division 2 where its doing no core parking and using nearly all cores, is this normal behaviour?
The other is Avowed which is also not core parking but is also using CCD1 and not CCD0.
Both game mode and game bar are on and the power plan is set to balanced.
I did try GFXOFF from Auto to disabled which has made no difference.
I have a 9950x3d on a Asrock X870E Nova with the current 3.30 bios, RTX 4090 running up to date windows 11.
My cores weren't parking in most games, but I appear to have fixed this mostly by turning CPPC to driver instead of auto in the bios.
Games I have tried that are working, WoW, Diablo 4, Snowrunner and No Mans Sky.
The issue I am having is with The Division 2 where its doing no core parking and using nearly all cores, is this normal behaviour?
The other is Avowed which is also not core parking but is also using CCD1 and not CCD0.
Both game mode and game bar are on and the power plan is set to balanced.
I did try GFXOFF from Auto to disabled which has made no difference.
Sorry, I should have mentioned, fresh windows 11 install and latest AMD drivers. amd3dvcachedSvc is running, have tried this on delayed start, no difference.
If its working on some games but not others I wonder if its down to the game or GameBar knowing its a game running.
I do not have a 9950X3D to test (9800X3D here which does not need the core parking)
I would say to check if the games which are not working are running in full screen and not Fullscreen borderless but with Diablo 4 I think Fullscreen borderless is the only option as you do not get Fullscreen only so doubt that is the issue.
Soldato
- Joined
- 12 Feb 2014
- Posts
- 3,111
- Location
- Somewhere Only We Know
There is a power profile that works perfectly and even give you a little added boost, not sure if im allowed to link it here or not, but I used it for my 7950X3D and using it right now for my 9950X3D, its called AMD Ryzen (Zen4-3D-2CCD) Ultimate HighPower 11-v5
AMD Ryzen™ [Zen4-3D] Ultimate v5 2023-05-29.zip
drive.google.com
To install it, just rename it to something simple like AMD.pow and stick it on the root of your C Drive for easy access, then just open CMD as admin, and type powercfg -import "c:\AMD.pow" and thats it, goto your control panel - power options, and select it as your power profile, instantly in task manager it will show you all 3D cores are parked when in Windows and you can use something like MSI afterburner to monitor which cores are being used in games.
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For The Division, this is almost certainly expected behaviour. Not all games perform best when restricted to the cache CCD, some prefer higher frequency. As long as your chipset drivers (download latest from the AMD website) and Xbox Game Bar are up to date, Windows should automatically select the preferred CCD/cores for the game.
That said, even if a game has a preferred CCD, cores on the other CCD may still become active as overall CPU utilization increases. This is normal, Windows will unpark and assign (game) work to those cores when needed to maintain performance.
Be cautious when using custom power profiles, especially those created for Zen 4 X3D CPUs such as the ones above. There's a fundamental difference in behaviour between Zen 4 X3D and Zen 5 X3D:
On Zen 4 X3D, it's expected for the cache CCD to remain parked during idle or light workloads. This helps manage power and thermals efficiently.
On Zen 5 X3D, this behaviour has changed and is reflected if you use the intended Windows Balanced power profile. No cores should be parked while the system is idle on Zen 5. Parking should only occur after launching a game and even then it depends on:
That said, even if a game has a preferred CCD, cores on the other CCD may still become active as overall CPU utilization increases. This is normal, Windows will unpark and assign (game) work to those cores when needed to maintain performance.
Be cautious when using custom power profiles, especially those created for Zen 4 X3D CPUs such as the ones above. There's a fundamental difference in behaviour between Zen 4 X3D and Zen 5 X3D:
On Zen 4 X3D, it's expected for the cache CCD to remain parked during idle or light workloads. This helps manage power and thermals efficiently.
On Zen 5 X3D, this behaviour has changed and is reflected if you use the intended Windows Balanced power profile. No cores should be parked while the system is idle on Zen 5. Parking should only occur after launching a game and even then it depends on:
- Which CCD the game prefers (cache/frequency)
- How high overall CPU utilization gets during gameplay
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Following up on my earlier post, I wanted to share a more visual example with screenshots to better illustrate my point. This is a bit of a rewrite of a post I did a while back on another forum, but the information still applies.
I’ve set up an on-screen overlay using MSI Afterburner and RivaTuner Statistics Server (RTSS), which displays CPU information such as clock speeds and per core usage in real time.
Screenshot 1: 4K RT Ultra + FSR Performance (Frame Generation ON)
This setup is GPU limited, meaning the CPU isn't being heavily taxed, and the second CCD remains idle.
Screenshot 2: 1080p RT Ultra + FSR Performance (Frame Generation ON)
Even in 4K GPU limited scenarios, you may notice occasional activity on the second CCD as the game demands fluctuate. For example in Cyberpunk 2077, this can happen while driving through the world, where CPU utilization spikes periodically. The behaviour can vary based on the game, scene complexity and graphics settings but hopefully these examples clarify what I was describing earlier.
System Setup Checklist for Proper Core Parking:
To ensure your system is configured correctly and that core parking works as intended, check the following:
BIOS Settings:
- Update to the latest BIOS.
- Typically, I'd say use default settings, ensuring CPPC (Collaborative Power Performance Control) is set to Auto. But looks like Asrock boards might be buggy and you might need to set it to Driver instead. Auto should select driver so not sure what is going on with Asrock.
- Use Windows 11, preferably build 23H2 (22631.5192) or 24H2 (26100.3775) or later builds.
- The latest Windows build is usually the best to use, but 9950X3D was validated on the earlier builds mentioned above.
- Install the latest AMD Chipset driver (e.g., v7.06.02.123).
- Ensure Game Bar is enabled and updated via the Microsoft Store.
- Make sure Game Mode is turned on (enabled by default).
- Use the Windows Balanced Power Profile.
- Reboot your system.
- Run this command as Administrator in Command Prompt: powercfg.exe /queryprofile scheme_current profile_gamemode CPMinCores
- It should confirm that the Balanced power profile is active and core parking is enabled. If not, something went wrong.
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Happy to report I have solved the issue with Avowed, turns out Game bar has a setting where you can tell it to 'remember as a game'. Once I had ticked this and restarted the game, it set it to CCD0 and parked the other cores which has improved performance. I was getting lots of stutters before.
I have all the latest updates for everything else, so think this maybe the issue solved (I hope).
Thanks again for your help.
I have all the latest updates for everything else, so think this maybe the issue solved (I hope).
Thanks again for your help.
Glad you got it sorted
Retailer (not here) has accepted RMA and a new one will be delivered tomorrow. I can only assume there was something wrong with the IMC generally, when (if?) they tested.
Nice! I still get a stutter fest in some games even with cores parking, changing the power plan to high performance or even power saver sometimes fix it; weird, but if it persists you may want to give it a try
Maybe 1 in 15 times when I launch Cyberpunk I’ve had little bits of stuttering. What fixes it for me is exiting the game and relaunching it. If that doesn’t fix it, then stopping the 3DVcache service and immediately restarting it fixes it completely.