Howdy Folks,

I have a 3080Ti, unopened and ready to install but will hold off til after the pending perf update.  For 3090 users who at displaying at 1440p, what does it take to see VRAM exceed 12Gb in use?  I know it's absolutely possible to go over 12Gb by increase Render Scaling, but short of that, what's it take, what plane, what scenery, etc.

My 8Gb 2070 Super is quite decent overall but in dense scenery I need to run many sliders at High instead of Ultra, w/ Object LOD around 110, Terrain LOD around 150 or soand quite frankly it still looks quite good.  In the air over areas like Los Angeles frequently VRAM is hovering around the low 7Gb mark and all the way to landing at KLAX where upon VRAM might start to get very close to 8Gb, especially if I have Volumetric Clouds at Ultra, and I'm still able to land often while maintaining a critical 30fps for my vsync to 30Hz setup.  I'm always amazed at how changing sliders to Ultra settings the change in image quality is rather underwhelming, which is a good thing for lower performaning GPUs.

So really what I'm after knowing before I open and install the 3080Ti is exactly where do you see that 12Gb limit breeched if you're running 1440p thru a 3090.  It's easy to imagine 12Gb ought to be enough, consider what 8Gb offers to me now.

Obviously I'm asking if I should resell the 3080Ti and pick up a 3090 while I still can.  OTOH, the massive size, weight and increased cost is nothing to scoff at.  

Thanks for your insights and info

I think even before the update you will be fine. You are gaining 50% more vram from your 2070. Open it and enjoy it. 🙂 

Hi Noel,

Just for your info:

Today I made a flight from Bordeaux (LFBD) to Nice (LFMN) with the FBW A320 latest development version.

To have a more realistic arrival, I added a lot of free sceneries on the "Côte d'azur" (Cities around St Tropez, Cannes, Nice, etc.).

I used GPU-Z to check some parameters of my graphic card during the flight

My graphic card is a RTX 3090 Founder edition I just got this week. My processor is a Core i7-9700K OC at 5GHZ; MSFS is on a dedicated M2 SSD, my community sceneries are on a SATA SSD.

To sum up, at LFMN, on the taxi to the gate after landing, I checked the current GPU used VRAM memory in GPU-Z: The result was that 22,3 GB of VRAM were used at this moment.

So, I think for this kind of software (MSFS), a huge vram size is needed to be able to handle very complex sceneries with a lot of objects.

Regarding my parameters, I run with a rendering resolution of 150 in order to emulate a 4K display on a 2K-1440P monitor. This makes the GPU working a lot, but it works well, the display is very sharp.

And obviously, on complex sceneries, there are still stutters (mainly related to the main thread) and the frame rate drops also during approach and landing (CPU/GPU related)

Patrice.

 

 

Edited July 23, 20214 yr by patrice_bambou

I have an AMD 6800 XT with 16Gb of VRAM. I’m running 4K textures on my 34” 1440p+ screen. Even when using a broad combination of addons (all ORBX global products, all AIG Ai Traffic packages with traffic at 100%, Henrik Nielson’s excellent Ai Ships at 100%, FSGlobal Mesh at max resolution, PMDG aircraft and large add on airport), I have never seen more then 10GB used. And I have texture streaming off btw. 

Edited July 23, 20214 yr by alepro21

2 hours ago, patrice_bambou said:

Hi Noel,

Just for your info:

Today I made a flight from Bordeaux (LFBD) to Nice (LFMN) with the FBW A320 latest development version.

To have a more realistic arrival, I added a lot of free sceneries on the "Côte d'azur" (Cities around St Tropez, Cannes, Nice, etc.).

I used GPU-Z to check some parameters of my graphic card during the flight

My graphic card is a RTX 3090 Founder edition I just got this week. My processor is a Core i7-9700K OC at 5GHZ; MSFS is on a dedicated M2 SSD, my community sceneries are on a SATA SSD.

To sum up, at LFMN, on the taxi to the gate after landing, I checked the current GPU used VRAM memory in GPU-Z: The result was that 22,3 GB of VRAM were used at this moment.

So, I think for this kind of software (MSFS), a huge vram size is needed to be able to handle very complex sceneries with a lot of objects.

Regarding my parameters, I run with a rendering resolution of 150 in order to emulate a 4K display on a 2K-1440P monitor. This makes the GPU working a lot, but it works well, the display is very sharp.

And obviously, on complex sceneries, there are still stutters (mainly related to the main thread) and the frame rate drops also during approach and landing (CPU/GPU related)

Patrice.

 

 

Patrice, thanks for the detail.  I wonder if you might do a similar test w/ render scale at 100.  I've run RS at 100 versus 140, where of course the 2070 Super choked, but still renders the scene just fine.  And quite frankly there was really no difference in image quality.  I also have a unique use of components by using vsync to 30Hz and I will continue this practice going forward.  So I know for certain it's possible to max out VRAM of 24Gb, but that would not even be close to how I will run MSFS.  So I feel your example does not apply enough to be very useful.  But thanks again for the detail.

Here's a screen shot of flying over rather complex scenery and really still had VRAM headroom left, which is a function of how I'm setup, and smooth stutter-free performance::

 

 

51 minutes ago, alepro21 said:

I have an AMD 6800 XT with 16Gb of VRAM. I’m running 4K textures on my 34” 1440p+ screen. Even when using a broad combination of addons (all ORBX global products, all AIG Ai Traffic packages with traffic at 100%, Henrik Nielson’s excellent Ai Ships at 100%, FSGlobal Mesh at max resolution, PMDG aircraft and large add on airport), I have never seen more then 10GB used. And I have texture streaming off btw. 

Thank you alepro that kind of fits with what I might have expected.  Do you have many settings on Ultra including Vol Clouds, and where is your LOD set?  

Hi,

I just made a flight from LFRN (Rennes Brittany) to EIDW (Dublin,Ireland) with the FBW A320. For Dublin I have added all the free sceneries (city) and also the airport by Mk-Studio.

Results: on the tarmac in EIDW: VRAM used: 14 GB (During almost all flight: 10-11 GB, but at the arrival and landing: 14 GB).

The best advantage to have a lot of VRAM is that the system does not use the system page file in order to save some data during full memory usage (I could see this a lot with my old RTX 2080 GC (8GB VRAM) (one time, I have seen a page file as big as 52 GB!))

Patrice.

4 hours ago, patrice_bambou said:

Hi,

I just made a flight from LFRN (Rennes Brittany) to EIDW (Dublin,Ireland) with the FBW A320. For Dublin I have added all the free sceneries (city) and also the airport by Mk-Studio.

Results: on the tarmac in EIDW: VRAM used: 14 GB (During almost all flight: 10-11 GB, but at the arrival and landing: 14 GB).

The best advantage to have a lot of VRAM is that the system does not use the system page file in order to save some data during full memory usage (I could see this a lot with my old RTX 2080 GC (8GB VRAM) (one time, I have seen a page file as big as 52 GB!))

Patrice.

Thank you Patrice.  Can you comment on these specific findings, to add critical meaning for me:

1.  T-LOD value

2.  O-LOD value

3.  Render Scaling value

4.  Any sliders less than Ultra?

Thank you very much Patrice.  Certainly more VRAM is always better but w/o these other parameters it's hard to really be sure what I'm seeing.

From the video I surmise VRAM use may drop by about 20% w/ SU5.  So this suggests in your example above at landing it may be somewhere around 12Gb instead of 14Gb.

Also, paging may not be the bad thing it used to be during the days of low amounts of system ram and hard disk drives.  What makes you believe VRAM use is involved in paging? Paging to what?  My guess would be VRAM pages to SYS RAM first, and when SYS RAM reaches a threshold SYS RAM pages to disk, which in my case is an m.2 NVMe drive.  But this is just a guess.  If this is true, it may be more important to add more SYS RAM.  

Thank you so much again Patrice please add more info as able.