Discussion AMD Cezanne/Zen 3 APU Speculation and Discussion

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dr1337

Senior member
May 25, 2020
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Fresh leak out today, not much is known but at least 8cu's is confirmed. Probably an engineering sample, core count is unknown and clocks may not be final.

This is very interesting to me because cezanne is seemingly 8cu only, and it seems unlikely to me that AMD could squeeze any more performance out of vega. A cpu only upgrade of renoir may be lackluster compared to tigerlake's quite large GPU.

What do you guys think? Will zen 3 be a large enough improvement in APU form? Will it have full cache? Are there more than 8cus? Has AMD truly evolved vega yet again or is it more like rdna?
 

Asterox

Senior member
May 15, 2012
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R7 5700 non-G non-X spotted in the wild on ibuypower pre-build pc website
View attachment 65471
View attachment 65472
Costs 16$ less than 5700X, with this high pricing it doesn't seem like it's gonna be sold for DIY people.
The only reason for this CPU to exist is it's the cheapest "ryzen 7" for AMD to make, since It's monolithic "Cezanne" die.
If you Google, that processor does not exist on the AMD website.


Rumors about that model are quite thin.If it doesn't exist on the AMD site, there is some good or bad reason for that.

For example, if you Google you can find all this on AMD website.

- R5 5600

- R5 5500

- R5 4500

- R5 4600G

- R5 4650G

- R5 3500X(China only), but it the past it was available at my local retailer in Croatia


This model also doesn't exist on the AMD website.But hey, you can buy it today or right now here in Croatia. :grinning:

- R5 3500

 
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SteinFG

Member
Dec 29, 2021
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If you Google, that processor does not exist on the AMD website.


Rumors about that model are quite thin.If it doesn't exist on the AMD site, there is some good or bad reason for that.

For example, if you Google you can find all this on AMD website.

- R5 5600

- R5 5500

- R5 4500

- R5 4600G

- R5 4650G

- R5 3500X(China only), but it the past it was available at my local retailer in Croatia


This model also doesn't exist on the AMD website.But hey, you can buy it today or right now here in Croatia. :grinning:

- R5 3500

4150GE doesn't exist on the amd website too, yet hp sells it in their mini PCs.

Same with 2100GE

Same with embedded ones like 5900E and 5950E that showed up in the recent Videocardz article.

Seems like as long as long as there's (my guess) just one OEM partner, they doesn't list specs on the website.

edit: found one more cpu missing from amd site - r7 6860Z
 
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Insert_Nickname

Diamond Member
May 6, 2012
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This model also doesn't exist on the AMD website.But hey, you can buy it today or right now here in Croatia. :grinning:

- R5 3500

I've seen the X variant briefly on sale here in Denmark. Was gone pretty quick, and never came back in stock. Never seen a non-X 3500 though.

While we're comparing strange variants, I'll raise you a 3600A:


Appears to be a bog standard non-X 3600, but without cooler. Actually seems a very decent budget deal, since it's cheaper then a 4500.
 

SteinFG

Member
Dec 29, 2021
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What do you guys make of this?

Looks a lot like Desktop Barcelo (Cezanne Refresh). So a slightly faster 5700G (same base, 4,6GHz -> 4,8GHz boost, no data on iGPU clocks). So either AMD's 2023+ mobile nomenclature also comes to desktop APUs, or another fake.


All posts in CPUs and Overclocking require personal commentary rather than just a link.
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jpiniero

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Oct 1, 2010
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Kaluan

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Jan 4, 2022
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Asus Turkey seemingly confirms the 7730U.
Which simultaneously confirms this is fake (IMHO):


5700U is Renoir-based, so not xx30 and having 2 Zen3 U-class 8 core SKUs doesn't make sense.

This chip is likely a 5825U (Barcelo) rebrand or slight refresh.

There's a reason the above linked 6 core is 7530U and not 7630U too. 7000 refreshes/rebrands seem to move down 1 tier.
 

NostaSeronx

Diamond Member
Sep 18, 2011
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Wonder if Cezanne is actually on N7+? Unlike Vermeer, it actually has improved base clocks over Zen 2 counterparts.

Could explain why Lucienne also exists. N7+ capacity requires time with the EUV machines, which will be shared with Apple.
N7+ is at Fab 15B while N5 is at Fab 18A.
N7+ is shares its floor space with N10, N7, N7+, N6.

N5 will not share fab capacity with any node except cost-effective RTO N4 and for N3/N2 up to 0.9v DKs before they switch over to their own fabs.

Apple doesn't use Fab 15 EUV machines(N7+/N6), instead uses Fab 18 EUV machines(N5). Which they only are sharing with an unspecified HPC customer.

C. C. Wei - Q1 2020
"But all I can say is now in N5, we have customer from -- smartphone; customer from HPC-related area"

The only two products to be on N7+ is Ascend 910 and Kirin 990 5G. Everyone else has moved to 2nd wave 7nm family node: N6 and 1st wave 5nm family node: N5.
 
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Shivansps

Diamond Member
Sep 11, 2013
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They made it smaller because the performance increase going to 11CUs was minimal just down to crappy scaling with too many shaders per Shader Engine. Better off going fast and narrow with Vega than slow but wide.
Dosent the fact the 4700G is barely able to beat the 3400G by 20% MAX with faster rams, more IPC, double the cores AND the 700mhz igp clock advantage what is HUGE, proves that to be wrong? And with Intel Xe around it is clear you can get more performance out of LPDDR4X than what Vega 8 at 2100mhz can.

They had to clock them way too high to make up for the lost CUs, that has a cost. To me, what was the more important change was the cut down in ROPs from 16 to 8, they did that silently and never said anything about it, that seem to had zero impact in performance and thats probably why they clock that high, i dont think there was more internal changes than that.

In the end, we cant be sure why they made Vega IGPs smaller, but wharever it was, it looks like they are reverting it now.
 
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ultimatebob

Lifer
Jul 1, 2001
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Stock is definitely the issue. But the amount of chips that fail the mobile specs can't be that high and you would think that desktop OEMs would be able to fill that gap. One thing to note is that there is no quad core Cezanne mobile part as of now.
Sadly, if the GPU is even remotely strong on these APU's, the crypto miners would start hording them if they were available in retail channels.
 

Shivansps

Diamond Member
Sep 11, 2013
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Wait, what? they downgraded the IGP freq on the 5700G? what the hell is going on here.

Speeds and CU are the same across the board for the 5300G and 5600G, that means they will perform as pathetic as Renoir does, they will have a really hard time trying to push that 5300G for more than $120.

TL;DR i dont think they will come to retail with that kind of IGP perf, AMD wants to charge a ultra premium for these, and the IGP is just not up to the task.
 
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mikk

Diamond Member
May 15, 2012
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Cezanne is a big fail. 4 months after the launch it isn't even low volume. Almost no Cezanne-U and only a few high robbery priced Cezanne-H are really available. Icelake-U was big volume after 4 months compared to this fail. No wonder the OEMs are impatiently waiting for Tigerlake-H, they can't make money with Cezanne from nothing. All the comparisons with Cezanne-H are more theoretical, Tigerlake-H is the real deal for the higher performance notebook market.
 

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