Well they’re claiming the new engine will be much more efficient in terms of taking advantage of a multi-threaded CPU.
Until we get our hands on an Alpha or Beta release of MSFS2024, we don’t know much.
Assuming their claims are confirmed, the answer is likely to be Yes, but at this point, it’s a guessing game really.
That is why in my previous message I emphasized the fact that where 7900X3D clearly has a sustainable edge is productivity/workstation type use cases - video, photo editing, etc…
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It is true that for the X3D CPUs the Windows power management needs to be set on “balanced” and with game mode to on for better performance (better core parking for gaming)?
I have another question, I will be building a PC (not myself but with a company) with the 7900X3D CPU. So far I have zero experience with AMD chips as well as for X3D CPUs. Do these CPUs require special tweaks in the windows or Bios settings? I am not deep into technical stuff and I just want to have something that just runs without tweaking all the time.
Yes, there are a few but I would recommend going with a solid company who will set these basic configuration parameters up in the bios and Windows prior to sending it to you. If you do have questions, there are many, many youtube videos on how to set up your PC with the AMD Ryzen cpu’s. In addition, this forum also provides great support!
Come on now, resistance is futile! 
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From what I have gleaned via research this does not apply to the 7800X3D as it has a single die vs. dual die such as the 7950X3D.
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Guys, if MSFS 2024 will definitely be a multi core game, will the 7800x3d performance be horrible? Compared to a multi core CPU?
7800X3D is an 8/16 CPU on one die that is 8 cores with SMT enabled 16 cores
So this means it will perform good?
7800X3D should be perfectly fine based on the limited information available at this moment.
However, until we get our hands on MSFS2024 anything we say is at best an educated guess.
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I think they said it’s only the flight model they are moving to a different core from other stuff so even though that should hopefully give a nice performance boost it’s going to still be within the confines of a 8 core CPU. That is of course without knowing for sure and also just the sim itself, no other programs and plugins running in the background connected to the sim.
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Improved multi-threaded optimizations for more of the simulation code is good news for every CPU. There is no CPU on the market for which that would be bad news.
It is possible that some CPUs will benefit more than others, and those with more cores/threads available for the simulator may benefit more than those with fewer cores on the big-cache CCD, proportionally, but frame times should improve all around.
Thus for instance the 7800X3D and 7950X3D may see the same improvement (same number of cores on the big-cache CCD), while a 7900X3D sees a smaller improvement (only 6 cores available on the big-cache CCD). Intel CPUs will see their own performance profiles specific to the number and types of cores available (additional use of performance cores will have more impact than use of efficiency cores, which can process less stuff per unit of time).
Further we don’t really know how much of a performance impact we’re looking at – if it’s the flight model it might not have a high impact on frame times at all, whereas terrain processing and avionics handling seems to be the big CPU slowdown in a lot of cases.
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I’ve read this thread, and another thread on this topic, and I just might be more confused now. I’m polarized between MSFS and Business Productivity. I’m paralyzed between the 7800X3D and the 7900X3D.
I’m building my first PC, solely to have a better machine for MSFS, but 99% of my time is spent on work productivity. Once in a while, I do video rendering, but it comes in waves; may do no rendering for 2 months, and then a ton of HD videos for a week straight. For business, I’m actually very happy right now with my current rig:
- i7-9750H 2.6GHz > 4.5GHz
- GTX 1650
- 32GB DDR 4
BUT - I will be doing more video rendering in the near future, and likely some 4K rendering.
Right now the 7900X3D is $460 and the 7800X3D is $450.
Would the 7900X3D take a lot of tweaking to make it work well with MSFS?
The future release of MSFS 2024 makes it even more confusing. Is it possible with that release, the 7900X3D may catch up to the 7800’s performance in MSFS?
The rig I’m building:
Deciding between the 7800 and the 7900 has been the most challenging dilemma of my 1st build. Greatly appreciate any wisdom.
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Better multithreading in MSFS2024 is likely to favour the 7800 because it has more cached cores. But this is just a guess because nobody has run it. It could go the other day or make no difference at all.
The rendering is almost certainly going to be better on the 7900 because it has more cores overall and some faster ones too.
Almost everything else you’ll probably not notice any difference at all.
It’s definitely easier to run MSFS on the 7800 because it doesn’t have this split core design. But plenty of people manage to get the 7900 and 7950 working as well, so it’s just one more thing to tweak.
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In this case go for 7900X3D.
Easy choice.
No. It’s pretty straightforward, and you’ll have all the help you need on this forum.
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Thank you so much kido007dz… I’m super close to pulling the trigger on the 7900 before it sells out… I appreciate your help. I’m going to quote some things I’ve read; I hope I don’t come across as pessimistic, I’m trying to get my mind around this…
ARE ANY OF THESE POINTS IMPORTANT IN DECIDING?:
https://linustechtips.com/topic/1500478-will-the-7900x3d-ever-be-as-good-for-gaming-as-the-7800x3d/
- “The sweet spot for modern games is around 8 cores. The problem the 7900X3D has is that it is two blocks of 6 cores, one of which has the cache. Games tend to like their threads to be kept together, so you’re basically either running 6 cores for gaming, or if you really do need the extra cores they’re logically far away and don’t benefit from the increased cache… So if gaming is the main thing, I think that only leaves the logical choices as the 7800X3D and 7950X3D, and skip the one in the middle.”
- “It only has 6 cores on the x3d side so it already is a worse gaming cpu pure core wise. Then the scheduler will never be as good as well not having to do any scheduling to the correct cores.”
- “As long as half the cores stay parked, the 7900X3D will be at a disadvantage vs the 7800X3D.”
- “The scheduler is that bad it basically relies on feedback from windows game bar and even then its not always responding to that. When the scheduler works the 7950x3d is great. The 7900x still isnt that good.”
HOW WOULD I EXECUTE MSFS ON THE 7900?:
https://www.avsim.com/forums/topic/632872-amd-ryzen-9-7900x3d-cache/
“I guess I have to start the game via the game bar app instead of the short cut I have on desktop.”
https://forums.tomshardware.com/threads/productivity-and-gaming-7800x3d-7900x3d-or-7950x3d.3812438/
“AMD provides either a driver or a tool that basically detects if a game is running and sets its affinity so it only can use the CCD with the 3D cache to avoid issues.”
Before these hybrid CPUs were released there was a lot of speculation about the OS scheduler. It turns out AMD did a pretty good job with drivers, etc, so it is no longer a worry.
The way it will be setup by default, all cores will be available for the game and companion apps. 7900X3D has the same amount of 3D VCache as its two siblings, just distributed differently. On a per core basis, it has more, as the 3D VCache is assigned to a CCX with 6 cores instead of 8 for the others.
Bottom line, it’s a great CPU, plenty of power. For 10$ difference, there is no reason to pick its cheaper sibling IMHO. If the price difference was much higher like when it came out, then it would be a budget question. Here, you’re getting more horsepower for workstation tasks at a nearly identical price, so it’s a no brainer IMHO.
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Your comment: “you’ll have all the help you need on this forum” gave me the courage to take the risk and pull the trigger. I ordered the 7900X3D while it was marked down from $600 to $460 – and before it sold out. It was Amazon Prime, so I figure I can return it for free, if I change my mind.
Because my build is very unique (ProArt MOBO, ProArt GPU, quick-release modular carbon fiber system with hot-swappable NVMe M.2’s, etc) – it makes a lot of sense to have a CPU that can handle work productivity. I wanted to ‘have my cake and eat it too’ (MSFS + Rendering)… and even if I lose a little MSFS performance, it just makes sense for the identity of the rig I’m trying to build.
I just hope I don’t lose too much MSFS performance. I’m aiming for 4K Ultra 60fps with DLSS 3 on… at least as a starting point. I assume the RTX 4070 TI will likely be my bottle neck.
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Good call. Congratulations!
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Thanks so much… you’ve made my week.
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