Upcoming GPUs (2016)

[mbox_bob]

.... I was just saying.

I completely agree with your simplification; it was just that proposed 48GB card!!. You're going to start rumours.

/e re: HBM
In HBM1, each stack interface was 1024bits wide with 2Gb chips (256MB), 4 chips per stack (1GB per stack), the GPU memory controller interface was 4096bit, so, 4 stacks are needed.

HBM2 looks to be coming in 1024bits (still), with 8Gb chips in 4 or 8 chip stacks (rumours from Samsung), i.e. 4GB per stack (currently), potentially 8GB in a stack! With a 4096bit GPU interface, and it will pave the way for 16GB or potentially 32GB cards.

The math gets harder with HBM as you need to add in the number of chips per stack.

[MiRai]

I completely agree with your simplification; it was just that proposed 48GB card!!. You're going to start rumours.

Well, we've already got GPUs with 24GB, so 48GB probably isn't all that far off, but I don't think I'd try to game on them (or even want to afford them).

Also, if you look at the rx480, some of the cards have all 8 mem chips with 4 disabled while still having the same mem interface as far as I know.

I didn't say you can't have GPUs with two different amounts of VRAM on it, I said 12GB and 16GB were unlikely and I explained why. If you look at the table I created above you can see several different GPUs throughout the years which have had two different amounts of VRAM offered on it.

The RX 480 has a 256-bit interface, so it's capable of having any of the following amounts of VRAM on it:

GDDR5/X 128-bit/256-bit = 1/2/4/8/16/32GB