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Necessary VRAM for My Project

My streaming poolsize is 2000 and while in editor around 1979 of the pool memory is used. Just to clarify, will my game not run stable/proper with video cards that have less than 2 GB of VRAM?

Product Version: UE 4.10
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asked Dec 24 '15 at 10:57 AM in Rendering

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tongucci
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avatar image Logan Bailey ♦♦ STAFF Jan 06 '16 at 08:41 PM

Hello tongucci,

This is an area of some debate. Depending on the graphics card, some cards will experience greater performance with lower VRAM. Notably, a 4GB memory capacity limit appears to create more problems for the Fury X than it does for the GTX980. As a result, the GTX 980 matches the performance of the much pricier Fury X and outdoes it at 33 megapixels.

Generally between 3 and 4 GB of VRAM is suggested for running and developing with UE4. Any less than this can cause serious performance issues.

-Logan

avatar image tongucci Jan 07 '16 at 01:56 PM

I am using GTX 980 so no worries there but do you mean that the end users (players) will also need between 3 and 4 of VRAM? That is what matters to me. In my project, the needed streaming poolsize is sometimes a little above 2000.

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Ok, thank you for clarifying. You can always enter a console command to increase the streaming pool size within the editor. The command is " r.Streaming.PoolSize and you can enter a value in after the command. For it to persist to a packaged game you will have to research where to implement this in code. Packaged games, after all of your optimization is done, should be ok to run on graphics cards with 2gb of ram. I couldn't really say if anything less would run your game. It would really come down to what the game involves. Something with a large amount of lighting calculations, particles, or intense GPU calculations will require more VRAM.

-Logan

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answered Jan 08 '16 at 02:59 PM

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