GTX 970
Yes, that last 0.5GB of memory on your GeForce GTX 970 does run slower than the first 3.5GB.
Its basically a 224 bit 3.5GB + 32 bit 0.5GB card, not a 256 bit 4GB card. How much will this affect 2.5k and 4k editing performance in practice, though?
The Nvidia employee who said the company was looking into a GTX 970 driver that would "tune what's allocated where to further improve performance" has updated his post to remove the claim after it was covered by several publications, including PCWorld, PC Gamer, and PC Perspective.
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