The Nvidia GeForce GTX 260 is comparable to the ATI Radeon HD 4870. I would go with a more powerful card over two lesser powerful ones. Also in CrossfireX, you don't add up the VRAM, if both your cards have 1GB of VRAM, you have 1GB of VRAM total, both cards have to have the same data in memory.
The Nvidia GeForce GTX 260 is comparable to the ATI Radeon HD 4870. I would go with a more powerful card over two lesser powerful ones. Also in CrossfireX, you don't add up the VRAM, if both your cards have 1GB of VRAM, you have 1GB of VRAM total, both cards have to have the same data in memory.Marfoo
The memory type on a video card does not have to be compatible with your board. The memory controller on the HD 4870 handles that memory so it'll work with any board.
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