AMD High Bandwidth Memory Official Slides

[jackalopeater]

Hey everyone, I'm extremely excited to finally be able to share some Official news about High Bandwidth Memory.  Hopefully this will get you guys a bit excited for things to come

 

I'll shut up now and share all the slides, I recorded a video of discussing the slides in detail I'll link it at the bottom if you're interested 

 

1

 

http://i.imgur.com/xrx75Mt.jpg

 

2

 

http://i.imgur.com/UY6DOXs.jpg

 

3

 

http://i.imgur.com/3z1febv.jpg

 

4

 

http://i.imgur.com/b0Ocma5.jpg

 

5

 

http://i.imgur.com/eM354sP.jpg

 

6

 

http://i.imgur.com/6Hpd8h9.jpg

 

7

 

http://i.imgur.com/bNzavCB.jpg

 

8

 

http://i.imgur.com/cXAQsqK.jpg

 

9

 

http://i.imgur.com/8meYwnZ.jpg

 

10

 

http://i.imgur.com/3rjQwjI.jpg

 

11

 

http://i.imgur.com/yHZPnm5.jpg

 

12

 

http://i.imgur.com/ribTDOK.jpg

 

13

 

http://i.imgur.com/y6esX8i.jpg

 

And a the link to the video I promised

 

[C0LL0SS0S]

I'll only believe them when they finally launch something instead of spreading rumours 

[werto165]

Do you think they need the water cooling due to the fact of less surface area for cooling due to the inherent design of the Hbm?

[That Norwegian Guy]

If I don't see this resulting in a triple-GPU card, I'll be sorely disappointed and ready to riot.

 

Out with the GDDR space-hog, in with more GPUs on the same PCB!

[Bouzoo]

Do you think they need the water cooling due to the fact of less surface area for cooling due to the inherent design of the Hbm?

 

Afaik only one version of 390x will be water cooled, the other one is gonna be air cooled, so I don't think so. They may need it due to overclocking. I may be wrong though.

 

Edited May 19, 2015 by Bouzoo

[SeanBond]

This excites me a bit. 

[Guest Kloaked]

If I don't see this resulting in a triple-GPU card, I'll be sorely disappointed and ready to riot.

 

Out with the GDDR space-hog, in with more GPUs on the same PCB!

 

If there's ever a triple-GPU card I will drink a bottle of sriracha sauce in a video and get Linus to play it on WAN show.

 

@TheSLSAMG

[werto165]

Afaik only only version of 390x will be water cooled, the other one is gonna be air cooled, so I don't think so. They may need it due to overclocking. I may be wrong though.

I thought that the 390x was the only new card and all others were just going to be rebadges of previous models.

[Bouzoo]

I thought that the 390x was the only new card and all others were just going to be rebadges of previous models.

 

Yes yes, but we're gonna get "two 390x versions". If they will be called 390x, some recent sources say it might have a different name.

 

http://wccftech.com/amd-fiji-xt-r9-390x-cooler-master-liquid/

I know, wccftech, but hey, it's a source.

[Notional]

Man it's going to be awesome seeing koth cards, in ITX form factors! I can't wait for 14nmFF 490x cards, ITX size, with 10-15 teraflops!

[Master Disaster]

So its around 3 times data throughput rates of GDDR5?

That's great and all but the question is can current busses handle the throughput rates to saturate it fully.

Having really fast RAM is pretty pointless if you can't send it data quick enough.

That said AMD innovating and pushing the industry forward as per usual, great job guys

[Trik'Stari]

But will they actually make something high end with this, or just do something with dinky apu's?

[Doobeedoo]

That seems all cool, while on paper for now, can't wait to see world performance and differences with this new memory.

[That Norwegian Guy]

If there's ever a triple-GPU card I will drink a bottle of sriracha sauce in a video and get Linus to play it on WAN show.

 

I'll hold you to that.

[Gibbons]

Slide 7 seems to imply that the 390X will only have 4GB HBM. With the memory efficiency improvements in GCN 1.2 that will still probably be fine even with the few inefficient console ports but it's going to be a tricky thing to market. Larger number better number.

[Notional]

So its around 3 times data throughput rates of GDDR5?

That's great and all but the question is can current busses handle the throughput rates to saturate it fully.

Having really fast RAM is pretty pointless if you can't send it data quick enough.

That said AMD innovating and pushing the industry forward as per usual, great job guys

 

Not anytime soon. But we are seeing problems with GDDR5 in some cases (mostly GPGPU). But there are other pros to HBM: Smaller, (much much smaller) and more energy efficient, which means less heat, and less voltage regulators. Both of which results in graphics cards, being much smaller in size.

[Notional]

Slide 7 seems to imply that the 390X will only have 4GB HBM. With the memory efficiency improvements in GCN 1.2 that will still probably be fine even with the few inefficient console ports but it's going to be a tricky thing to market. Larger number better number.

 

The question is if 390 series will have delta compression, like NVidia's 900 series. In that case, 4GB is more like 5GB on a 290 series. Either way, we will see 8GB versions, if people can wait/wants to pay more for it.

[deviant88]

Do you think they need the water cooling due to the fact of less surface area for cooling due to the inherent design of the Hbm?

No because HBM runs at extremely low frequency 500mhz versus 7ghz of gddr5  and only 1.3v,the cooling required might be the same or even less since they say it uses ~50% less power which means a lot less heat.

The problem now lies with the bottom stacked dies if you put cooler on top only the top die will get proper cooling but the bottom one might run really hot,this will probably be the key limiting factor for HBM in the future,if they cant increase the MHZ of the stacked dies they will get stuck again,but it seems for the near future HBM and flash memory stacking is the future both RAM solutions and flash(ssd) solutions.

Looking forward to CPU ram stacking and more 3D ssd's too,and new interfaces since stacking allows more bandwidth that we desperately need for storage at least.

[Master Disaster]

No because HBM runs at extremely low frequency 500mhz versus 7ghz of gddr5 and only 1.3v,the cooling required might be the same or even less since they say it uses ~50% less power which means a lot less heat.

The problem now lies with the bottom stacked dies if you put cooler on top only the top die will get proper cooling but the bottom one might run really hot,this will probably be the key limiting factor for HBM in the future,if they cant increase the MHZ of the stacked dies they will get stuck again,but it seems for the near future HBM and flash memory stacking is the future both RAM solutions and flash(ssd) solutions.

Looking forward to CPU ram stacking and more 3D ssd's too,and new interfaces since stacking allows more bandwidth that we desperately need for storage at least.

I was under the impression when they stack dies they don't do it one on top of the other, instead they do it end to end vertically so cooling the sides of the casing covers all dies.

Its more like

| || || || |

than

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[MEC-777]

This is really cool. Very curious to see how it will perform.

 

Also, I highly doubt they will launch 4GB versions of the 390/X as it doesn't make sense at that level of performance (clearly aimed at 4k). I'd put my money on them launching with no less than 8GB Vram. Would be a nice way to one-up the 980Ti which will [supposedly] have 6GB of standard GDDR5.

[MEC-777]

I was under the impression when they stack dies they don't do it one on top of the other, instead they do it end to end vertically so cooling the sides of the casing covers all dies.

Its more like

 

| || || || |

than

--------

 

No, look at the diagrams. They are stacked like dinner plates. Stacking them end to end would present additional complexity which is what they're trying to get away from.

[Eroda]

will have to see how the refined HBM2 on next years AMD/Nvidia cards differ from this first iteration might have solved some of the issues, either way the bandwidth headroom they have created with this should be sufficient time for them to solve any cooling/clock issues but the way it works it seems even going to 700mhz up from 500mhz would be a large jump in bandwidth

[Notional]

will have to see how the refined HBM2 on next years AMD/Nvidia cards differ from this first iteration might have solved some of the issues, either way the bandwidth headroom they have created with this should be sufficient time for them to solve any cooling/clock issues but the way it works it seems even going to 700mhz up from 500mhz would be a large jump in bandwidth

 

Only difference between HBM and HBM 2, is that the latter can have more capacity per stack (and maybe a little more bandwidth).

[Eroda]

Only difference between HBM and HBM 2, is that the latter can have more capacity per stack (and maybe a little more bandwidth).

 

still safe to assume amd is playing it relatively safe with the clocks

[Notional]

still safe to assume amd is playing it relatively safe with the clocks

 

True, but AIB's might not. However, you don't really need faster speeds on HBM 1, as you already get massive throughput in the bandwidth. If 390x uses delta compression, it needs less bandwidth, just like NVidia's 900 series.