Question about sli

[dzabdelhak]

hi guys hope you are all fine 

u jnow that in sli config vram doesn't double but i saw a video  2 titan x pascal were used and in GTA v it shows 24gb instead of 12gb 

there is the picture 

 

 

socan you please explain thisand sorry for my bad english.

[mmaatt747]

It does "see" the vram of both cards.  However, the vram on each card contains the same data, so you effectively still use only the vram of 1 card.

[GirlFromYonder]

How this works is that whatever needs o go into the VRAM is copied onto both GPUs. Like for example, you have a texture of doorknob. Now as both GPUs have to work together, that door knob will be copied onto the VRAM of both cards. So this way you do have 24 GB of VRAM. But u use 12 as ur textures have been double across both the GPUs. So if it says that u are taking 8gb of VRAM, actually you are taking 4gb