AMD Discussion

[cube]

Maybe it would be better to use the HBM for L4 cache, rather than iGPU-exclusive memory.

 

[koyoot]

Yes, but the point is that you don't really need to lock 2GiB RAM to the video card.

What you're saying is that DDR5 (not G) and cheap HBM are really needed. Maybe this explains the Vega strategy.

Of course you don't need to lock 2 GB to the video card. The frame buffer is the same as page file, and has the same bandwidth, so it does not make any difference.

HBM2 stack is the way to go for bigger APUs. 1280-1792 GCN core designs would need HBM2 to function properly fast.

 

[cube]

Of course you don't need to lock 2 GB to the video card.

But many people don't know.

 

[cube]

Is Threadripper/EPYC with HBM3 cache next? Zen 2+ ?

 

[koyoot]

Is Threadripper/EPYC with HBM3 cache next? Zen 2+ ?

We have no 100% information on Zen 2 and you ask about Zen 3?

I did speculated some time ago that the 9th die on EPYC 2 CPU can be HBM2 with IO part. It is a possibility. It would make sense if AMD did got away from NUMA architecture and created something like Ring-Bus but on Infinity Fabric 2.0.

 

[cube]

We have no 100% information on Zen 2 and you ask about Zen 3?

I did speculated some time ago that the 9th die on EPYC 2 CPU can be HBM2 with IO part. It is a possibility. It would make sense if AMD did got away from NUMA architecture and created something like Ring-Bus but on Infinity Fabric 2.0.

Zen 2+, unless Zen 3 comes one year after Zen 2.

I thought about the IO die, but it might be preferable one HBM chip per Zen die. I don't know what's the smallest HBM2 chip available (or for HBM3).

 

[koyoot]

8 GB L4 cache is enough for 8 dies, don't you think?

 

[cube]

Samsung also showed cheaper but slower HBM a couple years ago.

 

[koyoot]

https://www.freshpatents.com/-dt20180823ptan20180239708.php

Enjoy .

 

[cube]

https://semiengineering.com/using-silicon-bridges-in-packages/

 

[cube]

I imagine that if they put 64 cores on Threadripper next year, we should already see HBM2.

Or will X499 motherboards support eight channels? Will Threadripper and EPYC merge?

What is an XL-ATX E-ATX? It still does not seem big enough for 16 sticks.

 

[koyoot]

I do not believe Threadripper based on Zen 2 will move past 32 cores at first .

At best we can expect 48 core design in first implementation, and then move to 64 cores with Ryzen Threadripper 4000.

 

[cube]

I do not believe Threadripper based on Zen 2 will move past 32 cores at first .

At best we can expect 48 core design in first implementation, and then move to 64 cores with Ryzen Threadripper 4000.

I don't think it makes much sense to offer 48 cores only when 64 would fit. Not that it makes much sense to offer 64 with only four channels.

I also think Threadripper 2 might not see a core increase.

But it will make sense to have 16-core Ryzen 9. But will it be an MCM?

8-core APU! It took a very long time.

 

[koyoot]

I don't think it makes much sense to offer 48 cores only when 64 would fit. Not that it makes much sense to offer 64 with only four channels.

I also think Threadripper 2 might not see a core increase.

But it will make sense to have 16-core Ryzen 9. But will it be an MCM?

8-core APU! It took a very long time.

I do not know. There was a rumor, that PS5 dies are NOT monolithic, and it may resemble package with Interposer, CPU die, controller die, and GPU die, with HBM2 to add to that. But who knows what is AMD baking in their ovens?


Edit:

LOL!

 

[cube]

Yes, I was thinking the Zen 2 APUs might not be monolithic, at least the 8-core and 6-core.

 

[cube]

Intel is prioritizing Xeon and Core, good.

They are investing an extra billion on their fabs.

 

[cube]

https://www.anandtech.com/show/1304...3-2200g-integrated-graphics-frequency-scaling

 

[cube]

Ryzen CPUs already have 32 PCIe lanes, but 8 are wasted because the package does not have enough pins

They are also missing in APUs, which is even worse.

If they make an LGA, it should be designed so that a processor can be compatible with both DDR4 and DDR5 (similar to Phenom II).

 

[cube]

FX keeps going on and on, how big a wafer mountain is left?

 

[cube]

If you're going to use an APU, it would be better to get a motherboard with DisplayPort. The board or the monitor might not support FreeSync on HDMI.

Which brings the question: is there a DP->HDMI converter that supports FreeSync for future proofing?

And it seems only the Strix B450-F would have both DisplayPort and HDMI 2.0b (the X470-F might support the latter unofficially).

FreeSync is supported by AMD since GCN2.

 

[cube]

The cheapest monitor is 45 euro.

The cheapest FreeSync monitor is 90 euro.

The cheapest G-Sync monitor is 355 euro.

The cheapest FreeSync 2 HDR monitor is 450 euro.

The cheapest G-Sync HDR monitor is 2450 euro.

 

[cube]

The 2400G makes sense as the most powerful CPU that enables FreeSync with NVIDIA.

 

[cube]

I think many FX overclocking benchmarks must be wrong because they did not touch the CPU NB frequency.

Of course I overclocked CPU NB on my Phenom II.

 

[koyoot]

Apparently RTG has got Zen sample.

It has 8C/16T config, 4.0/4.5 GHz base/boost clock.

Remember when early samples of Zen1 had 2.8/3.2 GHz @65W TDP and how that eneded up in final specs in 65W TDP samples? .

 

[cube]

In the short term, there should be cheaper Ryzen 5 APUs with less CUs.

I guess that would translate into a 2300G with 8 CUs.

The problem is that an OEM Ryzen+ 3 CPU is called 2300X.

I guess 2300G must be reserved for a Ryzen 3 with 11 CUs then.