does GTX 770 SLI share the RAM?
- Thread starter mrtiwaz
- Start date
Solution
- Jul 20, 2014
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No SLI or Crossfire is not like maths where 2+2=4. In fact it is 2+2=2. Weird isn't it?
I'll quote this from a previous thread.
In SLI each card must store all of the data it needs to work with, and must store its rendered frame prior to transmission. If card A when running by itself is using 1.5GB of 2GB of VRAM in a specific game, then you add a second card B and keep the game at the same settings, card A will be using 1.5GB of VRAM its own still, card B will also be using 1.5GB of its own VRAM. Most of the data on the cards will be the same, they both need to have the textures they are dealing with loaded into their VRAM.
In short, SLI/CF does not increase the effective available VRAM, it only increases computational power.
I'll quote this from a previous thread.
In SLI each card must store all of the data it needs to work with, and must store its rendered frame prior to transmission. If card A when running by itself is using 1.5GB of 2GB of VRAM in a specific game, then you add a second card B and keep the game at the same settings, card A will be using 1.5GB of VRAM its own still, card B will also be using 1.5GB of its own VRAM. Most of the data on the cards will be the same, they both need to have the textures they are dealing with loaded into their VRAM.
In short, SLI/CF does not increase the effective available VRAM, it only increases computational power.
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