AMD: Navi Speculation, Rumours and Discussion [2019-2020]
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anexanhume
Veteran
Edit: tweet was deleted. It alleged Navi as 2x32 SIMD (or 2x16x2) instead of 4x16 in Vega.
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Rootax
Veteran
What would be the gains of that change ?
Bondrewd
Veteran
Genuinely, yeah.
A lot of "rumors" on prices and performance, and exactly zero "rumors" on what the actual uArch is.
Nebuchadnezzar
Legend
Less overhead of control logic, better perf/mm² and perf/W.
And the rumors are pretty vague, do not state much about power, additional features, etc.
Bondrewd
Veteran
Didn't some say ~150W or in the ballpark for the bigger one?
That says nothing about the actual uArch design.
sure .-)
A1xLLcqAgt0qc2RyMz0y
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This one clearly states "Sapphire also confirmed that AMD's Navi does not have specialized ray-tracing hardware on the silicon".
https://www.techpowerup.com/255768/sapphire-reps-leak-juicy-details-on-amd-radeon-navi
Intel has stated they will have specialized ray-tracing hardware on the silicon. If AMD does not they will be behind both Nvidia and Intel.
Bondrewd
Veteran
Somewhere circa 2022, yeah.
Yes, but is it based on machine translation (which at least some of fail miserably and we don't really know how good the chrome translation used for that reddit post was either) or actual translation? Of course can't be 100 % sure, but I'm pretty positive none of the TPU staff actually speaks chinese.
It's new iteration of GCN with new ISA. No need for rumors when it's all over AMDs drivers (unless you suggest they suddenly changed the way they mark their achitectures and their capabilities just to confuse others)
True.
However, according to Anandtech, it is apparently interesting enough for Lisa Su to talk about at her Hot Chips keynote.
Bondrewd
Veteran
That's super-vague.
There's barely anything.
Lisa's keynote is unrelated to Navi session.
Rootax
Veteran
Well, the big question when we first heard about Navi was "is it still GCN, or not ?". The answer is, it's still GCN. Granted it doesn't mean that they can't have a very nice gpu, but they didn't reinvented the wheel, so they have to work with some limitations of this architecture.
Bondrewd
Veteran
Why would it be anything else?
The one in Frontier is also GCN.
What was the last time a GPU vendor did that
General consensus say GCN and Fermi (with some arguing over is Fermi really that big of a change or not)
D
Deleted member 13524
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Are you assuming she won't be talking about Navi during the keynote?
Why would Navi be absent from a keynote that deliberately mentions new graphics products?
Bondrewd
Veteran
That sounds like more of a general "what to do when the Moore's Law is on its last legs keynote" than anything specific.
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