User:TechAngel85/Sandbox: Difference between revisions
From Step Mods | Change The Game
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== SLI/CrossFireFX == | == SLI/CrossFireFX == | ||
Each GPU in a system must have its own dedicated VRAM that is not shareable, additionally in order for GPU's to work together they need to have access to exactly the same resources. What this means is that for multi-gpu configurations (whether it is several different cards or multiple chips on a single card) all VRAM memory must be mirrored, so if you add up your total VRAM and divide by the number of GPU's you get your '''functional''' dedicated VRAM. All the extra VRAM for each additional GPU makes absolutely no performance difference whatsoever, it is entirely utilized to make the GPU's able to work together seamlessly. So lets say you have just spent $1620 for 3 HD 7970's in Crossfire, what you would expect is that your games will now have 9GB of VRAM available to them, in reality you are still limited to 3GB and the other 6GB is utilized entirely to make the other GPU's compatible. | |||
== Desktop Video Cards == | == Desktop Video Cards == |