To be fair it would be nice to see it with Fenix or PMDG and PSXT/RT or FSLTL at a busy airport(EGLL or KLAX etc)and flying above in a highly dense city, do some VFR runs too
Something that actually requires CPU power imo
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Yeah Iād like to see that as well, though I expect about 20% cut on FPS which is still desirable for me. Iām on 10700K and 3070 now, if I even get to 40 FPS on Ultra TAA with the X3D Iāll be very satisfied.
Did a quick Fenix A320 Benchmark test with MSFS Dev:
And if anybody is interested to see with Frame Generation:
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Hello. Iām really lost with the choice 7950X3D or 7800X3D. I want the best for MSFS only. The price is not important but my gaming pc is only for MSFS. I donāt understand very well. There are so many videos and explanations that it lost me. 7950X3D works with 2 CDD while 7800X3D with 1. I know that 1 is better than 2. But the 7800X3D CDD has access to 104 MB of cache while the 7950X3D CDD that has access to the 3D cache has 144 MB. But maybe Iām wrong and the 144 MB have gone back on the 2 CDDs and therefore the āgamingā CDD has access to less than 144 MB? I have seen videos where we disable the non-3D CDD of the 7950X3D to simulate the 7800X3D. This means that there is still 1 3D CDD with access to 144 MB while 7800 has only 104? Sorry that everything is repeated but Iām lost and I donāt know what to take. Just the best. When you look at the AMD photo, everything is better on 7950X3D. The 3D cache but also the clock speeds. In summary, I have 2 screens, 1 for MSFS and the second to display maps, IVAO web, etc. for MSFS.
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Of course it will, because AMD wants those sweet high end sales. The problem is the cache listed for the 7950X3D is the combined 3D and non 3D cache total. Itās the 3d v-cache specifically that has been the reason for the massive leaps in performance in gaming, and all 3 of the new CPUās have 64MB of the 3d v-cache. In the case of the 7900/7950x3d CPUās, only half the cores get access to the v-cache, whereas the 7800x3d only has a single CCD in use period, so all 8 of its cores get access to v-cache, same as 8 cores of the 7950x3d.
The core clocks get similar marketing treatment. The higher advertised boost clock of the 7950x3d only applies to the half of the cores that donāt have access to the v-cache. Apparently v-cache is more sensitive to heat, so they down clock those 8 cores on the 7950x3d to compensate (which also matches the 7800x3d clock speed).
All this is to say, the 7800x3d is going to roughly match the 7950x3d in gaming performance, so you should save your money if thatās your only concern. For production work that typically doesnāt benefit from v-cache, you are likely better off with the 7950x (non-3d) because all 16 cores are able to run at the higher clock speeds.
If you do mixed workloads, then you have a decision to make. The 7950x3d may be better than the 7800x3d when looking at raw data in such cases, but the question is if itās $250 better when you consider you arenāt really getting the best of both worlds.
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Thank you for your great answer. Have a nice day 
Well, if you say price is not important, then the answer should be simple. Get the 7950X3D.
There is nothing wrong with the 7950X3D and how it works. On all my tests, every single game was using the vcache cores without issues.
Remember, we really donāt know hiw the performance of 7800X3d will be against 7950X3D as everything is speculation right now. But if the 7800X3D would to be faster, I donāt think it would be by much. Maybe 5-8 fps faster if any. It could also be slower cuz it has less vcache. Who knows.
I got the 7950X3D cuz of peace of mind on having best of both worlds.
But, if you are on a budget and gaming is all you do, then yeah, go for 7800X3D.
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Indeed, we donāt have hard data, actual reviews of 7800x3D.
However, the amount of 3D Vcache is exactly the same in 7800x3D and 7950x3D, that we know.
The higher end chips have more regular L1/L2/L3 cache by virtue of having more cores.
The amount of additional 3D Vcache is strictly the same: 64MB, all of it attached to 1 CCX.
7950X3D has 128mb of L3 Vcache and 7800X3D has 96mb of L3 vcache.
7950x3D has 128MB of L3 Cache, out of which 64MB are 3DVcache.
7950x (non 3D) has 64MB of L3 Cache, since it does not have the additional 64MB 3DVcache.
Ahh ok, now I see.
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Picked up my 7950x3d last night, and will install Sunday/Monday, so I will have some feedback on it here next week. I only fly in VR so that will be my main test case, and Iāll be particularly focused on 1% low stutters rather than total fps as frame time consistency is king there, especially with reprojection. I plan to really load up the TLOD as well and engage in some process lasso shenanigans. The best I can manage with my 7700x is 200 TLOD, while still maintaining smooth 30 fps with repro. Will be fun to see what the new beast can do.
Interesting investigation below of frame time consistency with the chip. Though he only tests mainstream VR stuff itās still very illuminating and about what I expected. Donāt let the slightly clickbaitey title throw you off. Not a waste of money it seems (especially if you use it for work as well as gaming)ā¦ well I really hope not anyway hehe. 
His results are encouraging. Fingers crossed.
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VR is usually GPU intensive enough to create a GPU bottleneck. I would not update to the X3D if VR performance is your only concern, as youāll likely see little performance uplift.
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@ncbartschi That used to be the case for sure, but with a 4090 (and future gpus) it is now quite easy to become cpu limited again in VR, assuming you arenāt running at some extreme oversampling resolution.
There is quite a lot of variability in cpu demand in the sim, from high/ultra clouds, TLOD, scenery loading, differing aircraft systems complexity, photogrammetry, and traffic, whereas GPU demand is generally pretty stable, unless flying directly through heavy cumulus on ultra (all that alpha still takes a heavy hit).
Due to the slightly broken way model and texture LODs are calculated in the sim in VR currently the only way to get really crisp scenery is to crank TLOD, and itās very easy to get CPU limited there.
We will see!
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Yes, there are exceptions, particularly on LOD settings. However, I would say that for most VR users, VR is still GPU-limited.
Yes. Reading these boards itās easy to forget that an exaggerated proportion of the flightsim community here have top 1% PCs. Even relative paupers like me are pushing the top 5% in Passmark.
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At this point you donāt even need frame gen anymore haha
Hey guys - how much of an impact does FSLTL have on game performance? I just build a new rig with the 7950X3D, 2X32GB Gskill PC5 48000 (30-40-40-96), 4090 FE running at 2560X1600 and in busy scenes like Chicago O hare or Manhattan I am still getting low frame rates. This is a fresh Windows 11 Pro install on a Samsung 980 Pro 2TB.
I think there are some mis-understandings around the CCD on the 7950x3D that does not have the extra 3D cache. Iāve seen postings that say those cores are going to be parked while running the sim so why pay extra for something thatās not really going to be used by MSFS. Those cores will in fact be used by all of the other āstuffā that everyone runs in parallel with the sim like FSLTL, AIG, FS Traffic, performance monitors, etc. I took a snapshot (see below) of my 12 core/24 thread 5900x while running the sim and you can see the sim using 13-15 threads and my other āstuffā running on all the remaining threads.
The 7800x3D will have to run the non-MSFS stuff that doesnāt need the 3D cache on the cores with the 3D cache and at a lower clock rate. Imho the 7950x3D will be much more efficient in this case.
So if money is not a concern, my vote would be for the 7950x3D. Let us know what you decide!
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