Crossfire VRAM

[Dazz]

Hi, I was planning on adding another graphics card to my PC. And since the 290x and 390x are compatible, that was the plan. But my question is to do with the VRAM. When you crossfire two 4GB cards you have got 4GB of VRAM, but what happens when you Crossfire an 8GB and a 4GB? (this is with the 8GB 390x being the main card).

[Juanse]

You'll only use  4gb

It slows down the the lowest

[TheRandomness]

You get the lowest value.

[Philcat101]

Hi, I was planning on adding another graphics card to my PC. And since the 290x and 390x are compatible, that was the plan. But my question is to do with the VRAM. When you crossfire two 4GB cards you have got 4GB of VRAM, but what happens when you Crossfire an 8GB and a 4GB? (this is with the 8GB 390x being the main card).

You can't crossfire cards with different VRAM amounts, I don't think. Am I wrong?

[Guest]

4GB only afaik

[Godlygamer23]

It will utilize only 4GB of RAM on the 390X.

[Godlygamer23]

It will be limited to the lowest capacity and speed of both cards.

Same case with SLI.

NVIDIA does not allow cards with differing amounts of VRAM to be in SLI.

[SeanAngelo]

Hi, I was planning on adding another graphics card to my PC. And since the 290x and 390x are compatible, that was the plan. But my question is to do with the VRAM. When you crossfire two 4GB cards you have got 4GB of VRAM, but what happens when you Crossfire an 8GB and a 4GB? (this is with the 8GB 390x being the main card).

just 4gb.

 

it'll take the lowest card.

[Lord_Karango17]

You can't crossfire cards with different VRAM amounts, I don't think. Am I wrong?

It will just use the max amount on the lowest card.

[Sam Z Man]

You can't crossfire cards with different VRAM amounts, I don't think. Am I wrong?

You can with AMD not sure about Nvidia.

[RuLeZ]

You can't crossfire cards with different VRAM amounts, I don't think. Am I wrong?

You cant SLI, but you can crossfire.