Ryzen 3000 segmentation theory.

[Northman83]

I was reading an interesting theory about AMDs Ryzen 3000 series segmentation on how they split up the CPUs..

 

The theory goes that AMD has seen an increase in their EPYC server CPU that needs 16 perfect cores on each chip..

Meaning there can't be a single faulty core on the chip.

That is why the 16 cores where not released for now, because they are trying to fill demand for EPYC.

 

Which means, that they are sitting on a boatload of binned chips with a few faulty cores, so they can segment their lineup into 6,6,8,8,12 core Ryzen.

Using a combination of cores from each chiplet.

 

And then looking at the 3700x and 3800x.. the thinking is, that the 3700x is a complete 8 core from one chiplet, while the 3800x has cores from both chiplets.

Why.. because the 3700x has a lower TDP, compared to the 3800x, with almost identical performance..

But it should use less power if all cores are connected in one chiplet.

It should also have a almost 50% less energy draw going from 14Nm to 7Nm.. 

The 2700x uses 105w, for almost the same speeds the 3700x are getting drawing 65w.

 

 

Make any sense?

[suchamoneypit]

What you're saying about the binning process and stuff is something CPU manufacturers do, and could be true, but we simply have no idea, that would be pure speculation right now. Not like AMD has really given us insight on their exact selection process on a group of CPUs not even released yet.

[kiwibacon]

If the 3800x is 2 chipsets why does it have same cache?

 

3700x and 3800x both be 1 chipset. Just 3800x higher power targets and higher binned.

 

Also 3800x would be slower at gaming with same cores if 2 chipset . But in demo they compare 3800x to 9900k at games.

 

Notice how they never compare the 3900x in games because 2 chiplets and inferior. 

 

But I agree with you that they dont want to waste 2 perfect 8 core chipsets on a consumer chip. But wasting one is apparently what they are doing.

 

That's just my opinion.

[Fasauceome]

58 minutes ago, Northman83 said:

And then looking at the 3700x and 3800x.. the thinking is, that the 3700x is a complete 8 core from one chiplet, while the 3800x has cores from both chiplets.

Why.. because the 3700x has a lower TDP, compared to the 3800x, with almost identical performance..

well, this would be an issue then because the 3800X would have more core to core latency across the chiplets, so it would actually have the potential to be worse than the 3700X.

[Srnewbee]

Okay given what you say us true, we could potentially have a 12 core chip that actually has 15 working cores. How do we unlock them?

[caldrin]

5 hours ago, kiwibacon said:

 

 

Notice how they never compare the 3900x in games because 2 chiplets and inferior. 

 

 

That's just my opinion.

What makes you think that ?

Of course we don't know for sure until we get some real benchmarks but the slides from the show clearly showed single core performance on the 3900x being better than the 9700k and 9900k, for gaming that is pretty important.

Will have to wait and see

As for AMD binning processors.. yeah that kind of thing has always happened really.. its better then just throwing them away because some cores are faulty.

[kiwibacon]

On 6/6/2019 at 6:07 PM, caldrin said:

What makes you think that ?

Of course we don't know for sure until we get some real benchmarks but the slides from the show clearly showed single core performance on the 3900x being better than the 9700k and 9900k, for gaming that is pretty important.

Will have to wait and see

As for AMD binning processors.. yeah that kind of thing has always happened really.. its better then just throwing them away because some cores are faulty.

Because in zen and zen + 2 chiplets created a lag and is one of reasons Intel processors were superior. Which is why I think they made each chiplet 8 cores. So they can show a 3800x with 1 chiplet beating 9900k.  Also AMD didnt show 3900x in any gaming benchmarks .