[News] AMD to announce Vega tonight [Update: Vega Computex Announcement]

[BeepBeep2]

I get that HBM2 in the near future is going to be a power problem. But according to this slide, Vega is at most at the "unhappy" emoji phase, which means still better (lower) power consumption for the memory subsystem than the gddr5. Isnt it ?
I mean, remember, it has TWO SLOW HBM2 stacks, thats in contrast with FOUR FASTER HBM1 stacks of Fury X. its not even at 0.5TB/s yet, and you are talking about a problematic 1,2TB/s+ speeds.That cant explain a 100W+ power envelope over FURY.
I only see it as a major AMD fckup, or GLOFO`s fault.

@SinOfLiberty
Is vega 11 the same chip with disabled CU`s ,or is it a separate chip ?

Unhappy emoji phase is actually 4 stacks, look at the projected bandwidth (1000 GB/s), 2 stacks HBM2 should be AT HBM 4 stack power consumption or less. Anyone thinking the HBM2 is using lots and lots of power is probably wrong, the 2 stacks should be at least 2x the perf / watt of GDDR5 @ <250 GB/s and 3x+ perf / watt of GDDR5 @ ~500GB/s.

Further backing this up is the mem VRM on the Vega FE card, OnSemi NTMFD4C86N which is only going to do about 25-30 amps @ 1.2-1.3v <40w

It is absolutely mind-blowing to think that Zen and Vega are both on 14nm LPP considering how great Zen is and how poorly Vega is performing.

It is way more cut down w/o HBM2

It is all a load of bull.. As in practice, Power Consumption goes out of the window once the card is clocked beyond certain frequencies. In case of AMD, dat huge аss number of W`s comes from exactly that. The chip is running at its highest freq, that the hardware is capable of.

But again, this is not how it will be marketed as. Just an extra option for OC`ers and reviewers to demonstrate what the card is really capable of when pushed to max.

How do you know this?

Look - there aren't even ES samples of Vega 11 yet nor have there ever been and I don't think we'll see one.
Vega 10 should easily scale down to the 150w TDP range Polaris 10 occupies. My bet is that Vega 11, if a design actually existed, has been cancelled.

Leaked Q4'16 slides with Vega 11 show it slotting in for inference applications below Vega 10 but today we have the Radeon Instinct MI8 instead, a 175w R9 Nano in new clothing. The MI8 for FP32 most likely matches or beats the MI25 in performance / watt at stock performance levels.

Vega 11 wouldn't make sense unless it is equipped with the same FP16 capability as Vega 10 and extremely huge GDDR5X bus and 20GB+ GDDR5X...but then again, it would use way more power than Vega 10 due to the GDDR5X power consumption.

[vario]

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Look - there aren't even ES samples of Vega 11 yet nor have there ever been and I don't think we'll see one.
Vega 10 should easily scale down to the 150w TDP range Polaris 10 occupies. My bet is that Vega 11, if a design actually existed, has been cancelled...

I dont know. But Vega 11 on GDDR5(x), as in smaller ANOTHER chip, would be a very welcomed thing for AMD.Yes Vega 10 can scale down.
But its BIG, it needs HBM2, it needs inerposer. A smaller chip (much cheaper to produce) on a widespread cheap memory is certainly something that AMD needs...

What worries me is that at least NOW, it seems, that polaris has more performance for mm2/hz(up to 1300mhz or so).So that could be a reason to can it, or maybe rework it.