Sign in to follow this  
BusheFlyer

Memory, 64bit and you.

Recommended Posts

Just a post because I keep reading comments about memory usage in P3D 4.0. I think there is a certain amount of lack of understanding over how memory management works in a 64 bit operating system along with a 64 bit application.

Applications require a certain amount of ram in order to function.. I have no idea what P3D NEEDS.. but my best guess is around 2-3GB's.

Windows will basically look at it's available free memory and assign it to processes as required. The objective is to use as much of the free unused ram as possible. Therefore.. whilst P3D's NEEDS 2-3GB's it will be assigned a much larger amount to make use of. If all that is available is say 5GB then P3D will happily operate within that budget, it just means it will unload things from memory at a much higher rate than if it had 32GB available.

Rushing out and buying memory is unlikely to give you better performance of the sim to any noticeable degree unless you are truly starved of it (2GB-4GB).

If you are running P3D my message is stop worrying about your RAM usage! I believe people see P3D utilizing 16GB of ram over a long session and believe that it needs to be given more. Conceivably over a very intensive and extremely long session cirlcing the global.. P3D could use up all of 128GB+ of ram. Performance benefit.. negligible to zero.

 

 

Share this post


Link to post
Help AVSIM continue to serve you!
Please donate today!

I think you are not understanding how the sim works...

Share this post


Link to post
55 minutes ago, BusheFlyer said:

Just a post because I keep reading comments about memory usage in P3D 4.0. I think there is a certain amount of lack of understanding over how memory management works in a 64 bit operating system along with a 64 bit application.

Applications require a certain amount of ram in order to function.. I have no idea what P3D NEEDS.. but my best guess is around 2-3GB's.

Windows will basically look at it's available free memory and assign it to processes as required. The objective is to use as much of the free unused ram as possible. Therefore.. whilst P3D's NEEDS 2-3GB's it will be assigned a much larger amount to make use of. If all that is available is say 5GB then P3D will happily operate within that budget, it just means it will unload things from memory at a much higher rate than if it had 32GB available.

Rushing out and buying memory is unlikely to give you better performance of the sim to any noticeable degree unless you are truly starved of it (2GB-4GB).

If you are running P3D my message is stop worrying about your RAM usage! I believe people see P3D utilizing 16GB of ram over a long session and believe that it needs to be given more. Conceivably over a very intensive and extremely long session cirlcing the global.. P3D could use up all of 128GB+ of ram. Performance benefit.. negligible to zero.

Uhm - I seriously doubt that's how the sim and/or Windows operate... :huh:

Share this post


Link to post

I believe that P3DV4 has been optimized to load way more data into memory than previous versions.

So, more memory (both RAM and VRAM) will be useful.

Now there comes a point of diminishing return, I grant you that, but 2-3 GB is not that number..

 

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this