How does vram work on multi GPU setups? - Techist - Tech Forum

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Old 11-08-2013, 09:35 AM   #1 (permalink)
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Question How does vram work on multi GPU setups?

From what I understand, if you are running 2 670s in sli for example, the vram is limited to only 1 of the cards. Why is this? Why can't 1 card render half of the pixels using its own vram and the other card render the other half using its?

It just seems so wasteful to have around 2gb of gddr5 memory just sitting there.

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Old 11-08-2013, 05:47 PM   #2 (permalink)
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Default Re: How does vram work on multi GPU setups?

VRAM is mirrored between the two cards so they both have the same texture information to fill the screen.
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