1.37.7.0
Had to make some BIOS changes which required the motherboard defaults to be applied.
Decided to see how FS2020 did with the defaults.
CPU = i5-13600K
Mem = DDR5 7200 QVL
GPU = Intel A770 16 GB
CPU changed from 5 Ghz to 3.5
mem changed from 6400 MT/s to 4800 MT/s
Surprised that I don’t see any difference in performance in FS2020.
In fact, there may be an increase in FPS of around 8 FPS.
Hi @MSFSRonS,
I moved your topic to the User Support Hub Hardware & Peripherals that is more appropriate to your topic.
Assume you mean Ghz for the CPU.
The way that intel boost works is that it has a base speed, but will boost beyond that up to whatever predefined limits are set in the bios, be they speed, voltage, power, current, or thermal limits.
So in bios it might be saying 3.5Ghz, but if you monitor the p core frequencies while you’re in the sim, it’ll be boosting up to whatever the max it can achieve within the limits. If it starts hitting a limit (such as getting too hot, or drawing too much power), it will begin to throttle down until it’s below that limit again.
As for RAM speed…it seems like it’s highly dependent on the task, as to how much of a difference speed will make. I actually also notice that for 99% of gaming tasks and this flight sim, I see really not much difference between 4800 stock, and the xmp of 6400 for my kit.
There might be other computational tasks that WOULD benefit from the higher speeds though. I’m no expert, but I’m sure I remember reading that things like video production and those sorts of tasks, it can have quite a large impact on processing times.
So yeah, you’re right that for RAM speed, it probably doesn’t really matter much for gaming…for CPU, you’re probably not actually reduced from 5Ghz down to 3.5Ghz though, it’s probably still boosting beyond that 
Thanks, I agree and I’ll correct the title.
Motherboard defaults will boost the 13600k to 5.1 Ghz. If you just simply reset BIOS defaults, nothing really changed unless you’re forcing a higher P-core frequency than 5.1 Ghz.
Render resolution also matters. If you’re rendering at 4K, you’ll likely be GPU-limited anyways - especially with that GPU.
Ok. I looked at the BIOS and the settings for CPU frequency and DDR5
were set to “AUTO” as the defaults.
So, I set the CPU freq to 3.5 Ghz and DDR5 to 4800.
This is what Hardware Info shows:
FS2020 still looks the same for performance & FPS.
If that is true and you’ve truly borked your cpu boost frequency, then it’s probably as ncbartschi said, in the instance where your seeing the same fps, you’re probably gpu bound.
Fps in games is always a combination of gpu and cpu, but if one of those things hits a brick wall, the other can cruise, if that makes sense?
In any event, i don’t think it’s the greatest idea to deliberately limit your cpu to less than stock frequency, because there will undoubtedly be situations in sim and elsewhere that you will be losing performance by doing so.
End of the day, it’s your pc, you can do as you wish, but personally i don’t see the purpose of deliberately limiting your cpu like this.
I was just thinking of seeing if it would matter to FS2020 and
its performance and FPS.
It doesn’t appear to.
Yes, my GPU runs at 100%.
Would limiting the CPU allow the CPU , MB, and memory to run cooler?
Last longer?
idk …
Use the sensors in hwinfo to check temps, it’s also where you should be monitoring the clock speeds, not just from the summary page.
Logic would suggest that downclocking the cpu and ram should give cooler temps… but it’s probably not the best balance between reducing temps and losing performance… instead, look at setting the correct power limits for your cpu and either manually setting the voltage or applying a subtle undervolt.
How much lifespan your cpu has from running at lower speeds, i doubt will make much difference as a cpu will typically last longer than you’d want to keep it before upgrading anyway…
In terms of temp saving you’d have to compare before and after limiting it. If your temps were already good before limiting, then i doubt you’ll see much benefit.
As i said, i don’t see that deliberately borking your cpu speed is a great choice, especially in such a demanding program as msfs.
Yes, that’s why. GPU is controlling overall sim performance - which is normal at or near 4K resolution.
Hi, sorry for my bad english.
Don’t downclock your CPU, leave it with the default frequenzies.
But lower the supplied power for the CPU and find the settings your CPU runs without errors.
This will give you the effekt that your CPU runs at lower temperatures and thermal throtteling will not reduce your CPU-frequenzy.
See in the internet how to do this with your individual motherboard. Look for ‘mode*’.
You also can use: ‘Iintel-extreme-tuning-utility’ finding the acceptable Ampere-adjustment, seeing also how often thermal-throtteling will occur.
With this I have only little performance-loss but cpu-temperature about < 70°C with Msfs2020 stutterfree in all circumstances, everything maxed-out in the graphic-settings except LOD (130) for buildings. (I7-14700, DDR6000, RTX4070).
The bottle-neck in my PC is the CPU, so I could downclock the GPU with temperatures now about < 60°C.
Before these adjustments i had a really bad performance with Msfs 2020 as my PC was new. Stutters everywhere.
The above mentioned and ‘DLSS-Swapper’ for RTX-cards gave me the solution. Framegeneration ‘on’ with ‘Quality’-setting. Look for synchronisation of ingame-FPS (V-sync) and the monitor refresh-rate.
60 FPS for me.
Good luck.
