Nvidia’s Pascal will take video memory to a whole new level

Nvidia Titan X video card angle
Bill Roberson/Digital Trends
Graphics cards have always required extremely quick memory. That’s why for years they’ve sported GDDR5, while main system RAM has used DDR3. That ends with Nvidia’s next generation of graphics cards, currently codenamed Pascal, which will take things to a whole new speed level thanks to the second generation of High Bandwidth Memory (HBM).

We first saw HBM in AMD’s Fiji XT-based Fury line of GPUs, and while its bandwidth was impressive, it seemed constrained by the number of gigabytes that could be packed on to the PCB. Pascal will fix that: Some cards in the new line-up sport as much as 16GB of the high-speed memory.

This is possible because HBM2 effectively quadruples the available DRAM per die, by allowing for taller stacks. It also doubles the speed per pin to two gigabytes per second. At it’s GTC technology conference in Japan, Nvidia revealed that this will give bandwidth in excess of a terabyte per second, more than double what AMD’s Fury X cards currently offer. Get all the juicy details at ExtremeTech.

Of course, the cards sporting 16GB are likely to be restricted to the top end of the GPU spectrum, with price tags to match. But Steam’s hardware survey still suggests that most gamers have 2GB of memory in their GPUs or less, meaning anything with HBM would be a big upgrade for them.

What’s really exciting about this news is that AMD is probably working on a counter to it. After the lukewarm reception its Fury line received, AMD would be remiss not to up its game in 2016, where it has promised to introduce a high-performing CPU competitor in the form of the Zen.

Neither it nor Nvidia have announced when their next-generation graphics architectures will be released, but they’re both expected to show up at some point in the first half of 2016.


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