RAM requirement for HD Mesh v4

[ninerwhiskey9W 19]

Hello,

I've just moved to XP11 a month ago, and wanted to try out the HD Mesh v4 for Australia and Asia/UHD Mesh v4 for Japan and NZ, but the minimum requirements state minimum requirements of 32GB of RAM. Is this really the minimum requriement or can one get by with 16GB of RAM as well ?

Cheers

9W

[Airboeing 87]

16GB are fine for HD v4, but can be limiting with UHD, depending on the area you fly in, which planes you use etc.

I can only say that I never experienced OOMs with 32GB and UHD v4, I never tried it with 16GB.

[ninerwhiskey9W 19]

How much memory does X-Plane use when flying into areas with the mesh ? I generally fly with the Zibo or the Toliss A319.

[Colonel X 1,430]

From my own testing I can say that UHD Japan works fine with 16GB, so do the areas of SoCal that I tried. You will most likely run in performance issues (over mountains, the mesh is really heavy on the CPU) before you get memory problems. UHD mesh never used more than 12GB on my system - but I haven't used it extensively.

[Paraffin 2,197]

The UHD mesh is free, so there's no harm in trying it with 16GB to see if you get stutters when flying it.

It could depend on how many other services and apps you have running in the background too. I'm always flying with ActiveSkyX loaded, LittleNavMap running as a flight planner/moving map, and a Chrome browser with a bunch of tabs open including YouTube for entertainment during the cruise phase of a flight. With 32GB I've never had problems. 

If you're building a new system or upgrading a current one, it's always a good idea to throw as much RAM as you can at the system (within reason). At this point 64GB might be overkill, but 32GB allows a nice cushion for multitasking. 

[ninerwhiskey9W 19]

Thanks for the advice gentlemen. I currently have 16GB of RAM, planning to pick up another 16GB kit soon. I'm downloading Japan, and a SpainUHD tile and will test it and see how it performs on my system.

[Glenn_C 135]

This will give you a rough idea. I have 32GB of memory and it very rarely goes over 20GB and that's when I am doing other stuff other than X-Plane at the same time.

Using:

• Spain Ultra High Definition Photoscenery -SpainUHD- 2.0
• ASXP
• ToLiss Airbus A319
• And a plethora of other plugins

 

 

 

 

[ryanbatc 12,835]

Regular HD mesh v4...16 GB is fine

UHD v4...I've run out of memory and xp11 stutters to a halt lol

[Bjoern 1,157]

I run HD and UHD mesh and scenery objects at maximum without issues with "only" 8 GB of RAM. They key here is a page/swap file with a fixed size of 16 or more GB to buffer any demands for additional memory while loading new terrain tiles.

Edited June 21, 2019 by Bjoern

[MindYerBeak 73]

On 6/21/2019 at 11:23 PM, Bjoern said:

I run HD and UHD mesh and scenery objects at maximum without issues with "only" 8 GB of RAM. They key here is a page/swap file with a fixed size of 16 or more GB to buffer any demands for additional memory while loading new terrain tiles.

What if you leave it on system managed ?  Wouldn't it be the same ?

[Bjoern 1,157]

7 hours ago, MindYerBeak said:

What if you leave it on system managed ?  Wouldn't it be the same ?

Theoretically yes, but I found that space allocation speed sometimes can't keep up with demand, making X-Plane crash.

Edited January 2, 2020 by Bjoern

[KBUR 178]

Well, higher mesh generates also better, more detailed LC in X-Plane - which in turn produces more autogen, more roads, more auto generated buildings - which leads to more CPU- and not RAM related workloads; and if the CPU workload gets too high, it performs to stutters and less smoothness. (besides: the waves depection in x-plane is a horrible CPU hog too - hopefully LR will fix this with the upcoming updates).

Which concurs with my own experiences in X-Plane 11:  RAM - particular VRAM - dependencies are almost entirely related to the texture slider (and reflections); not the mesh.

First and foremost for X-Plane is a graphics card with VRAM of at least 11 GB (would be good).  If the card runs out of VRAM, the system draws on RAM which can also lead to performance stutters - but not so bad according to my own experiences.

Hope this helps; all the best.

Edited January 3, 2020 by KBUR

[MarkSC 122]

The HD mesh with a few plug ins is about 9 GB for me. By comparison, ORBX PNW in SD is around 14 in populated areas. 

Edited January 3, 2020 by MarkSC