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Guru3D.com » News » Upcoming Geforce GTX Volta cards Use GDDR5X not HBM2

Upcoming Geforce GTX Volta cards Use GDDR5X not HBM2

by Hilbert Hagedoorn on: 06/16/2017 05:51 PM | source: | 45 comment(s)
Upcoming Geforce GTX Volta cards Use GDDR5X not HBM2

We've written a lot back and forth about GDDR5X versus HBM2 (and GDDR6 these days). Nvidia did not place all their eggs in one basket, AMD pretty much did so for high-end. That being the main and root cause of delays as HBM2 is difficult to fab and expensive. As it stands now, opcoming consumer GeForce cards based on Volta will not use HBM2.

This is a new claim that originates from Fudzilla, who states that this info came from well-informed sources. I tend to agree as nothing is pointing or indicating towards HBM2 from Nvidia at this moment in time. From the looks of it, small and compact HBM2 memory simply is too expensive for consumer products. Nvidia does use HBM2 on its GV100-gpu, but much like what happened with Pascal, here again they will revert to GDDR5X memory for the consumer parts.
 

 
While HBM2 might seem to offer better memory-bus width, latency and lower voltages, it seems harder to fab and implement and likely thus is more costly and complicated to use than expected. Just look at the massive AMD Radeon RX Vega (consumer) delay, this likely is due to the limited availability of HBM2. 
Meanwhile Nvidia has been plastering GDDR5X in their recent high-end SKUs. GDDR5X still rocks hard this year. Next to HBM2, GDDR6 is the new thing for 2018. The new graphics memory type will offer up to 16Gb (2GB) per IC. So eight ICs would already get you to 16 GB of graphics memory.

Nvidia could make use of SK Hynix and/or Micron GDDR5X memory. 







« E3 2017: Crytek Hunt Showdown Gameplay · Upcoming Geforce GTX Volta cards Use GDDR5X not HBM2 · ZOTAC GeForce GTX 1080 Ti AMP Extreme Core Edition »

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vbetts
Moderator



Posts: 15142
Joined: 2006-07-04

#5443727 Posted on: 06/16/2017 03:21 PM
It's probably cheaper, plus AMD has been working with HBM for awhile we know. Nvidia still is probably getting their feet wet with it.

Kind of reminds me of a certain war between two optical storage formats just a few years back...

NewTRUMP Order
Senior Member



Posts: 665
Joined: 2017-02-04

#5443733 Posted on: 06/16/2017 03:28 PM
Smart business plan: Make best product possible, with the cheapest products available. What do I care what memory is being used if it works, doesn't cost me my second born and my favorite dog? :approval:

Lane
Senior Member



Posts: 6361
Joined: 2005-02-25

#5443735 Posted on: 06/16/2017 03:33 PM
I was most think that Volta will use GDDR6 ( on consumer gaming parts ), not GDDR5x...

Anyway, we should certainly see GV104 first, and if they want release them this year, GDDR5x is the only solution. ( an with same rate speed than today, as i dont think they could make evolve GDDR5x much higher )

SirDremor
Senior Member



Posts: 586
Joined: 2008-06-20

#5443738 Posted on: 06/16/2017 03:36 PM
HBM doesn't provide any real benefits to consumer products while costing a kidney and causing your product to be delayed for more than a year, so no surprises Nvidia is not rushing to use it.


BTW, this "bandwidth" advantage of HBM is a myth.
True it HAS advantage in 1-chip-vs-1-chip design, but we need to look at the whole package (and consider if such bandwidth is actually needed at all...).
Just look at 1080 TI with GDDR5X having more memory bandwidth than unreleased Vega with HBM2.

RealNC
Senior Member



Posts: 3921
Joined: 2011-11-24

#5443743 Posted on: 06/16/2017 03:42 PM
Since 4K will obviously be the target for the upcoming Volta cards, NVidia had better optimize memory I/O even further if they stick to GDDR.

MSAA seems to be dead, so they will probably get away with this just fine.

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