Dualcore GPU memory

[lachyman]

Hey guys, just a quick question, how does the memory work on dual-GPU cards? Are they bound by the rules of SLI or do they have double effective memory of a single card?

[wtfxmitchell]

if you have a dual gpu card with 6gb of memory, it gets split iin half, 3gb for each gpu

[Volbet]

The memory is mirrored. If you have two 2GB GPUs you only have 2GB of effective memory.

[WildTurtle]

What everyone is saying is correct, if you have 2 GPUs you will only get the VRAM of one of the cards. This is simply due to the fact that ALL GPUs in a SLI/Crossfire setup must have the same image in each of their memory buffers to process and do work on the image and then spit out the final result, In case you were wondering why that is.

[codytappen]

Marking a solution could help others with the same question as you in the future without having to start their own thread. If you think someone answered your question, please, mark their post as the solution.

[lachyman]

if you have a dual gpu card with 6gb of memory, it gets split iin half, 3gb for each gpu

So when I buy for example a HD7990 with (as stated in a shop) 6GB VRAM and 768bit bus, what will I get ingame? Sorry for asking the same thing again but I need this sorted out.

[kaneandtaker]

So when I buy for example a HD7990 with (as stated in a shop) 6GB VRAM and 768bit bus, what will I get ingame? Sorry for asking the same thing again but I need this sorted out.

3GB 384bit (just like a 7970)

[wtfxmitchell]

So when I buy for example a HD7990 with (as stated in a shop) 6GB VRAM and 768bit bus, what will I get ingame? Sorry for asking the same thing again but I need this sorted out.

3gb 384bit the same as an 7970