The million dollar question is how much as AMD/ASMedia improved the I/O options for this release, in particular, will we have USB 4 (or, at the very least, TB3)?

This is the big area where Intel still holds a chokehold over the laptop market, the professional docking solutions only work on laptops with Intel CPUs.

Quote from: _MT_ on October 20, 2020, 17:51:53

Quotereduced latency can be expected with the Cezanne SKUs owing to the new shared L3 cache

Are you sure about that?
...
I imagine the new eight core complex is actually derived from Renoir.

Incorrect - Renoir uses a 4-core CCX, so Cezanne ought to be based around the 8-core CCX design.

Quote from: neblogai on October 20, 2020, 21:35:25
Renoir Zen2 to Cezanne Zen3 should be a huge upgrade for the CPU when not power limited- for example in laptop H-series, and in desktop. However, we do not know how much better it will be in power limited U-series laptops.

The improvements to the desktop chips are at the same level of power, so it would be odd to see this change in mobile. There ought to be around 15% performance improvement - enough to bring them back into contention with Tiger Lake.

I'm disappointed if the mix of different CPU core designs throughout the product range is true, though. That's unnecessarily confusing.

Renoir Zen2 to Cezanne Zen3 should be a huge upgrade for the CPU when not power limited- for example in laptop H-series, and in desktop. However, we do not know how much better it will be in power limited U-series laptops. Cezanne comes with more L3 cache, which is usually power hungry; and AMD made Cezanne quickly, so not sure if it has been properly designed to be really power efficient. So, in the end U-series Cezanne CPU might be faster only in single threaded tasks if it is a rush job; or it could be better in everything, if AMD managed to achieve power efficiency.
But regarding the iGPU- there should be no difference- iGPU is the same Vega in both. One serious difference though might be if Cezanne has an updated VCE, that can play AV1 codec. From ~2022 that codec is likely to become important, as it can greatly improve the quality of streamed video.

How big of a difference is Zen2 from Zen3 in this context, particularly when it comes to the igpu?  For example will the 5600u perform better than the 5700u, despite the 5700u having a higher GPU clock and more cores/threads?  Confusing indeed.  I have been considering the HP Envy x360 with a 4700u but I'm in no rush and could hold off for the 5000u processors if it would be a worthwhile upgrade. 

We still have yet to see many 4800U laptops out in the wild hopefully AMD gets there s*** together and starts pressuring OEM's to start using it more.

I feel like some manufactures are starting to take AMD seriously now. We already saw the amazing HP envy x360 with Renoir, which for some reason got a score of around 84 on Notebookcheck, but Linus Tech Tips, a YouTube channel with around 11 million subscribers, gave it a whole hearted recommendation. Also, you have the HP ProBooks, HP's flagship business laptops with Renior. With 5000, I think other manufacturers will see the opportunity and put Ryzen 5000 in their upcoming laptops.
Hopefully. If not, f*** all of them.

Quotereduced latency can be expected with the Cezanne SKUs owing to the new shared L3 cache

Are you sure about that? On desktop, the change relates to the switch from a four core complex to an eight core complex. So now, L3 cache is shared by eight cores rather than four (and so a 16 core chip will have just two L3 caches rather than four). The capacity doubles as well, but you have double the number of cores sharing it so capacity per core remains the same. But mobile chips are monolithic. I imagine the new eight core complex is actually derived from Renoir. And this might be why mobile chips before Renoir were limited to four cores - they were built around the same four core building block as desktop processors (desktop six core processors had two such complexes with each of them having one core disabled).

ULV Renoir already has variants with SMT. IIRC, the odd numbered chips (4300U, 4500U, 4700U) have SMT disabled and even numbered (4600U, 4800U) have SMT enabled. Not to mention the PRO models (4450U, 4650U, 4750), all of which seem to have SMT enabled. I believe I have also heard of 4400U, but I'm not sure whether it actually exists. So, if Lucienne changes something then it's the removal of non-SMT versions rather than presence of SMT-enabled versions.

I'm disappointed that desktop Renoir APU have so far been limited to OEMs, AFAIK. We're talking about the release of Cezanne (granted: mobile, not desktop) this winter and I still can't buy Renoir.