They don’t have to. I have a 7950x3d and don’t use gamebar. It’s all right there in the bios. You select “Cache” for your CPPC and it will run on the V-cache cores with preference, but not restricted to.
It has a lot more per core L3 cache as well. In fact it has the most per core
Wrong
Not needed
Might know a thingy or two. This thread has a lot of info. 7950x3d Benchmarks for MSFS 2020 - #931 by MrTonySM
Excellent; I’ll go and read that thread. Really appreciate all this support, and experience. I’m just learning and it it’s slowly coming. Thanks MrTonySM.
You’re very welcome, please read that thread back in time some. There is a lot of different input from those of us trying, and tweaking to find what works the best. 
Dang… 900+ posts! I don’t plan on doing any overclocking although I did purchase the RTX 4070 TI OC. I’ve got to dig through and just try to find the best / simplest method to switch cores back and forth for MSFS / Non-MSFS.
Wow… you’ve ‘got your game on’ 
Your rig is pretty darn similar to me, based on this: https://forums.flightsimulator.com/uploads/default/original/4X/0/b/a/0ba5d0bd5baef5e31696c8427911ac85c38a0ac0.jpeg
6000 CL28? I ordered 6000 CL30.
Wow… that other thread is like finding a needle in a haystack. Based on your comment, is this all I really need to do? Jump into Asus bios each time I Launch / End MSFS?
That is a one time set and forget
These chips run the best like this. And they do. I have tried every combo, gamebar, the whole works
OK, so leave it like that even though I’m only using MSFS 1% of the time? Do you have any pictures of your PC posted anyplace?
and yes, it will prefer to use CCD0 the cache cores 1st. but won’t hesitate to use the other cores. Parking cores… is for noobz (still relevant?) 
sorry to the core parkers. All msfs will happen on CCD0, the v-cached cores. But it won’t hesitate to use those other cores if say so open other apps. they spring to life. Not parked is the way to go. I can chat a storm on discord while msfs runs in brutestrength tlods and pffft. Did the fsltl thing, i ran smoother (fps more consistent). just heated up my cpu more
Here also a good video explaining some things to keep in mind when using the 7900x3d chip
You’re spoiled… so nice. The studio monitors are placed perfectly; I bet the sound is tight and sweet!? Thanks for sharing those pics. Do you have a pic where the inside is visible (I’d especially like to see what’s going on in the right side of your tower).
So in step 4 in my post below… set to “AUTO” – that would mean I wouldn’t be parking any cores; is that correct?
My DDR kit: https://www.gskill.com/product/165/390/1665020865/F5-6000J3040G32GX2-TZ5NR
More than the 7950X3D? How does this positively impact certain processes / workflow? I did read a great deal about the 7900X3D, but just about every single thing I read, bashed it pretty hard.
Thanks for sharing that vid Felipe… here’s a summary:
This brings up a question; do you think it matters whether I use Windows 10 or 11? Home or Pro?
3D Vcache is additional L3 Cache.
All 7000X3D chips have 64MB VCache in addition to regular L3 Cache.
On a per core basis:
In theory more L3 is a plus for a cache hungry process like the MSFS main thread.
It’s good for game smoothness (measured by 0.1% and 1% low FPS).
In practice there are other variables that affect performance as well so YMMV.
I explained earlier in this thread that the 3D cache per core difference between these processors is irrelevant and a red herring.
The 3D cache is L3 which is shared between all cores and the same software, code, and threads will run in both processors and have access to exactly the same L3 cache. The only difference is that the threads will be squished into 6 cores for the 7900 instead of 8 for the 7800, and 8 cores is better.
Yes it is shared, as mentioned above.
Does not mean it’s irrelevant. L3 Cache is distributed differently on the 7900.
Are there any known benefits in particular workflows / processes?
Citation needed.
