Ive been having blue screen issues and after speaking to windows they have suggested I using the wrong ram? The ram I have is corsair x2 32gb @5200mhz, but having noticed it says Xmp ready?
I’m trying to find a difinitive answer online, but still not sure. Motherboard is prime x670p WiFi and that mentions expo?
Bottom line have I got the wrong ram?
Any help appreciated
Have you checked the QVL list of your mobo? Unlisted RAM can be used but the rated OC speed might not be fully stable. Also try running a RAM test with something like memtest.
Blue screen clearly indicates the RAM can´t run at its max speed or at the defined settings. Try setting stock RAM speed in BIOS (not using the XMP profile) or in case you have XMP I and XMP II available in BIOS try to switch between them. Stock speed would be most likely something in the 4000 MHz range and that will be stable for sure.
I have also another Corsair RAM at 5200MHz but it´s a 64BG model. I had to set XMP II in BIOS as XMP I was not stable. Those profiles may also change the timings and other settings, which could be one of the reasons for the blue screens as well as speeds.
Cheers
Thanks for the response. I’m replacing the Ram for ram for amd systems (expo) . When I looked at the bios before, it did state it was only running at 4800mhz only.
I’ll try the new set of sticks and go by there.
I’ve had an opportunity to upgrade my system with a OC ventus 4090 and ryzen 7900x, yet the system is sitting there turned off! 
Take into account that any advertised max speeds will be based on overclocking profiles using the RAM stock speed as basis. Check the vendor´s data sheets and the MoBo supported speeds and available XMP profiles it has to be on the safe side. You may not reach the top speeds always but RAM can still run really fine below the max advertised speeds, so don´t worry too much about that. Stability and low CLs are more important provided that you can be close to the 5000MHz ranges.
Cheers
EXPO is better for AMD but please also consider using only 2x16 GB instead of 2x32 GB.
Even if the RAM is certified for a certain speed and is in the QVL of the MB, the attainable speed depends on the memory controller, which is on the CPU. Very often the advertised speeds are attainable with two x 8 or 16 GB modules but not with 4 modules or 2 x 32 GB.
Thanks for that advise. The reason ive of gone for the Ram specs is because from the specs on both CPU and Mobo. I appreciate the advise, so is 64gb too much?
Attached are the specs
64 GB is useless for gaming, you won’t see more than 16 GB occupied typically.
32 GB is the sweet spot for MSFS.
What in the what!? Ok, sorry for getting here late. Do not run memtest. It is weak. Run OCCT OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC . Run OCCT for 1 hour memory test, set all to auto besides the 1 hour run. 64GB for MSFS is the sweet spot. Then you have no limitations, and higher TLOD runs smoother. TLOD 4.00 for example. There are now massive scenery on FS.to, getting into the 30+ GB range. I have seen my sim use more than 30GB of system ram!!!
WHAT??? This is a 2x32 kit. I have been testing at 6400mhz as well trying to stabilize at CL28. Sorry, I don’t buy that. Buildzoid took a quad channelled kit up to 8000mhz stable. 2x32 will not only run advertised speeds. It’s a champion OC’r!!!
No it’s not. Show me a situation in which MSFS uses more than 20 GB of RAM, let alone more than 32.
And regarding the stability with XMP / EXPO profiles, it is well known that the larger the memory, the higher is the risk of instability and the need to push IMC/SOC voltages up.
Link
Your experience as a single user is not statistically relevant, so isn’t any other heavily tweaked configuration (Bullzoid sets each timing manually, doesn’t he?)
The 64 Gb of RAM is used by the PC and not just FS2020.
It depends on what and how many apps you have running.
Yeah but typically you don’t do anything heavy in the background while simming…
How about my 32GB RAMDisk that is used for FS2020 Rolling Cache?
The rolling cache is useful only when you fly above the same area for the second time.
If you put it on a RAM disk, then you have to keep your PC always on.
I do fly in the same areas. That is what the Rolling Cache is for.
Not true. There is the option to save the RAMDisk to a drive at
power down and restore it at power up.
Yes, MSFS can go beyond 20 GB and overall system beyond 30 GB. After initial game launch on main menu system is already on almost 21 GB. Data columns below are current, min, max and average.
Flying over New York with just a C152 increases system usage to 31 GB. MSFS alone is using 20 GB and GPU is using 12 GB (this is not seen on the previous tables but on the developer mode FPS counter).
Results are for 12900ks + 4090 at 3840x1600 with 125% scaling, ultra settings and TLOD/OLOD 200. There are 300 online AIs and heavy dense clouds now at that area. Push viewdistance beyond TLOD 200 and you will pass those limits if the scenery density is higher or you have payware airports.
Cheers
In that screenshot the sim takes 19.9 GB and 31 totally occupied, I guess with a lot of background stuff, at 4K x 125% Ultra with heavy traffic etc.
We can discuss ad infinitum if we take into consideration TLOD higher than 200, custom scenery, airports, aircraft etc. but I couldn’t say that the “sweet spot” is 64 GB.
All that stuff has a big impact on framerate too, and you wouldn’t want to use all of that at the same time anyway.
64GB may not be fully used now and I agree with you. But on the other hand we already passed the 32GB limit with MSFS, even if no other games may use that much RAM.
I would not suggest to stay on 32 GB if you own a 24 GB gpu. System runs better when using just 50% of your available RAM.
Cheers
Personal Comments and Observations
I don’t have a horse in this race, as I have 64GB System RAM now, but Guru3D ran a very good analysis of MSFS performance in 2020 and then updated it a year later. Granted, it’s been 2 years since that time, but the sim’s basic design hasn’t really changed.
Bottom Line: 16GB is enough. If you’re running something else on the same box while the sim is up, yes, you’ll benefit from that extra margin. But the base sim doesn’t eat up more than that.
Link to article:
