I have i712700 K with RTX 3070 and get limited by CPU. Admittedly I use a good number of complex payware scenery along with Fenix and FSLTL. Will upgrading to i912700 be worth the investment?
Better get a 13th gen cpu. i5 13th > i9 12th. Anyway your cpu is already good I donât think you would have such a big benefitâŠ
In the situation youâve mentioned, it would be difficult not to be CPU limited, no matter the CPU. I donât even bother looking at the stats counter anymore, it can become an obsession. As long it doesnât become a PowerPoint Presentation, Iâm happy.
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You already have a very good CPU/GPU combination. I doubt a processor upgrade would do much for you. What are you trying to achieve? What problem are you trying to solve? If the sim is running well, and it ainât brokeâŠ
AFAIK, on the dev mode FPS counter youâre always going to be âlimited by somethingâ. Thatâs just a diagnostic indicator. If youâre not CPU-limited youâll be GPU-limited. There are a few other âlimited byâ categories but Iâve never seen any of them for more than a brief instant.
Note that itâs really âMainThread limitedâ and not CPU-limited, anyway. This doesnât indicate that your CPU has run out of cycles; it indicates that waiting on the main threadâs tasks to complete for each frame is taking up more time than waiting on the GPU to finish rendering it. A better metric is the MainThread Time. If this is low and in green, youâre good. If itâs high and in yellow / red, you might benefit from more CPU power.
We regularly see threads about people being MainThread-limited despite no cores of their CPU being at 100%, and this causes consternation because people assume there are reserves of unused power. But the way the sim works means that it is frequently âboundâ on one kind of operation or another. Yes, effectively spinning and waiting. The secret to unlocking better performance in software generally is to minimise the amount of time your code spends waiting on something external like IO or memory reads, but there are practical limits on this for complex computational tasks. Faster CPU and better GPU generally equals more FPS, but there are diminishing returns at the higher end. Moving from 12th gen to 13th gen probably would not get you a significant FPS uplift; moving from a 3070 to (say) a 4090 might not either (except via frame generation).
Also, 14th gen is just around the corner, so you might want to wait⊠if single threaded performance gets a significant bump again, it may become the new ticket to more FPS.
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If running an addon like AIG or FSTL, youâll be CPU limited. For some users a CPU upgrade can help.
I have heard AMD 5800x3D / 7800 are good options.
I donât quiet chase high FPS and as long as I donât get stutters, I am happy even with FPS that is in high 20s.
That said, I do get stutters at busy airports with Terrain LOD 85, object LOD 80, most settings high with one or two at ultra. This is what I want to get rid of along with being able to get a steady 30 FPS or somewhat above this mark.
At this point, I think getting stutters of varying intensity around airports is pretty common right now, regardless of hardware. With my 12900k/3080ti, I get 50-70 almost everywhere, however I use vsync and run at 40 and it stays above 40 until I get close to an airport, where briefly the FR will drop and Iâll get a stutter or two. Usually at this point, there will be a spike in the info downloaded and my CPU usage briefly ramps up. My guess is that the sim takes a âgulpâ of info it needs to draw the airport environment and the processor has to deal with it in short order causing the stutter. Iâm no expert for sure, but I think the sim needs to be programmed to start loading the airport environment earlier and in smaller âbitesâ so as not to create a CPU crisis.
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