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[TT] AMD's new Zeppelin CPU spotted, features 32 CPU cores - Page 4

post #31 of 111
Quote:
Originally Posted by warr10r View Post

If Zen will run 32 threads at once I don't think we will care how many cores it actually has biggrin.gif
I believe server CPUs will have up to 32cores/64threads.
post #32 of 111
Quote:
Originally Posted by Carniflex View Post

Well it sure would be nice if at last AMD would have a consumer desktop socket with quad channel RAM. Although considering they plan to use the same socket also for their low end stuff (for example, the stuff currently on AM1 platform) I am not holding my breath over that possibility. Unless AM4 is going to be some kind of really really unusual somehow modular socket (i.e., a "small" variant of the socket with only half or quarter of the pins and size with the "small" APU's capable of functioning also on the large socket in the, say, upper right quadrant of it).

Far more likely scenario is ofc keeping the desktop and server sockets separate as they are currently.

While very unlikely I could see them pulling off the one socket for everything in theory. If one is already putting pins in the socket then few hundred extra pins overhead cost is relatively minor. I mean if talking about, say, ~2000 pin socket vs ~2200 pin socket. Or they might not need that many with most of the stuff already in the SoC, just the buses going to RAM, IO and PCIe slots and power delivery as well ofc. So the server chips would be differentiated predominantly by having a "server" south/northbridge in the SoC while consumer versions would have the "consumer" version with some cut capabilities like not supporting registered and ECC memory, no SAS, etc. Only problem might be the ITX boards if they have a new socket similar in the size to Intels LGA2011 or their own G34 (LGA1944). But their APU's might benefit greatly from having quad channel DDR4 RAM as higher end ones seem to be quite memory bandwidth starved in their APU's.

In the higher-end APUs like Zeppelin the MCM is supposed to have integrated HBM for the GPU while the 32 CPU cores use the quad channel DDR4 (basically 2 Zen processors on the same module). I don't see much difference or benefit on the CPU side to having 100GB of total memory bandwidth other than to simplify the design of cramming two Zen CPUs into one package.
post #33 of 111
Quote:
Originally Posted by PostalTwinkie View Post

I am looking at this and thinking, just do 6 or 8 cores on an APU and absolutely dominate 1080P to 1440P gaming if paired with the proper GPU. Something that they could do in the next year.

Dominating gaming now and in the next year is all about having 2-6 cores as fast as possible - depending on the game. That's true in both dx11 and dx12. Is all about the raw performance of those cores and if you're not going for the best CPU's, the price.

May be quite different landscape in 3-5 years
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post #34 of 111
This is clearly an Opteron part and I'm reasonably confident it's targeted at HPC
Quote:
Originally Posted by Ultracarpet View Post

RIP HSA/Huma lol
What are you talking about? This is clearly the HSA end game.
post #35 of 111
Quote:
Originally Posted by Disharmonic View Post

This is clearly an Opteron part and I'm reasonably confident it's targeted at HPC
What are you talking about? This is clearly the HSA end game.

Two different memory pools for CPU and GPU. Ruins the whole point of HUMA at least, otherwise there would have been motherboards with gddr5 ram on them for previous APU's.
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post #36 of 111
Quote:
Originally Posted by Ultracarpet View Post

Two different memory pools for CPU and GPU. Ruins the whole point of HUMA at least, otherwise there would have been motherboards with gddr5 ram on them for previous APU's.

Maybe this is designed to compete with existing compute infrastructure which doesn't use anything like HSA. It kind of goes with their CUDA->OpenCL converter.
post #37 of 111
Quote:
Originally Posted by IvantheDugtrio View Post

Maybe this is designed to compete with existing compute infrastructure which doesn't use anything like HSA. It kind of goes with their CUDA->OpenCL converter.

Maybe, but all I know is that with the separated memory, it is literally no different than having a dedicated CPU+GPU other than being less powerful because both are contained within one chip in the APU.

*edit*

I might have jumped over some of the notes on that diagram... does the GPU have access to both the HBM and the system memory?
Edited by Ultracarpet - 2/3/16 at 12:04pm
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post #38 of 111
Quote:
Originally Posted by magnek View Post

Dang, hadn't even thought of that. But since you mentioned it...

Zeppelin is destined to crash and burn like Hindenburg

drum.gifbiggrin.gif

Maybe it'll be the opposite, much like how FX was meant to Bulldoze the competition or Piledrive it into the ground. biggrin.gif
Quote:
Originally Posted by Carniflex View Post

They called integer units cores which is not a full core in my book. Mainly because I care a lot more about floating point performance for my specific usage pattern than I do for integer performance.

So, does the 386 have a core considering it has no FP unit at all? There's no official designation of a core, but it's undeniable that integer always matters more than FP for the definition given that you can run things without an FPU but afaik, not without Integer calculations. It'd be fairer to say that their core count means little to you as they have weak FP performance which you need more of regardless of whether it's 8 cores or 4 cores.
Quote:
Originally Posted by Cyro999 View Post

Dominating gaming now and in the next year is all about having 2-6 cores as fast as possible - depending on the game. That's true in both dx11 and dx12. Is all about the raw performance of those cores and if you're not going for the best CPU's, the price.

May be quite different landscape in 3-5 years

It's not as clear cut as that, even if AMD relies on core counts to get the performance levels they want if they have 16 cores running at the speed of Haswell IPC with similar OCing levels it's still going to be more than fast enough for gaming to last until the next gen consoles hit and we get another reasonable jump in performance requirements
    
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post #39 of 111
Reminder that consumer grade Zen is x CPU + iGPU, or for the high end, 8 CPU. Should satisfy most gaming market ranges! (edit: and bristol ridge is AM4 excavator, I think... not entirely sure)



This zeppelin part is more exciting though...

edit: here's the chart where they actually call the thing AM4 as it's called now.


Edited by Tivan - 2/3/16 at 1:10pm
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post #40 of 111
Quote:
Originally Posted by Ultracarpet View Post


I might have jumped over some of the notes on that diagram... does the GPU have access to both the HBM and the system memory?
Yes, the GPU has full speed access and cache coherency with the system memory according to the slide
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