R9-290 Crossfire VRAM stack or not?

Brian1234132

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May 7, 2014
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Hey guys, I know the crossfire/sli FAQs say VRAM does not stack when using multiple GPUs. However, I am using a crossfire R9-290 setup atm....

Playing games like Sniper Elite 3 @ 1080P (All settings ultra + 4x supersampling). MSI Afterburner reports a usage of 5.1gb VRAM, however I can still game without a hitch 60fps vsynced.
Would this mean VRAM for Hawaii does indeed stack?
 
Solution
Actual usage is 5.1/2 in that case, meaning you effectively use 2.55GB VRAM with another 2.55GB being a copy of exact same data for the second GPU.