AMD Ryzen 7000 / Zen 4 : fréquences, modèles et caractéristiques, le point #cequelonsé

AMD Ryzen 7000 / Zen 4 : fréquences, modèles et caractéristiques, le point #cequelonsé

As the official release date for AMD’s future Ryzen 7000 processors fast approaches, it’s time to do a little recap of everything we know, or suspect, about these CPUs.

As early as January 2021, AMD CEO Lisa Su confirmed to us that the manufacturer was already working on its zen architecture 4 intended to succeed Zen 3 (used by Ryzen 5000). In any case, the opposite would have been surprising given the time, often counted in years, required to design a CPU architecture. Since then, a lot of information, official or not, has been added to the quite attractive technical sheet of this new generation of Ryzen 7000 processors. So this is an opportunity to take some time to take stock.

Credit: AMD

AMD Zen 4: first appearance of an 8-core Phoenix Point processor

AMD Zen 4: the features

With these new Ryzen, AMD abandons its AM4 socket for a new one AM5 plug. The company is taking the opportunity to adopt DDR5 memory with its Ryzen 7000 series processors and change the recording node. Therefore, we are moving from 7nm etching for Ryzen 5000 processors to 5nm etching (TSMC N5 process) for these new CPUs. Logically, like every improvement in the fineness of the engraving, we should therefore benefit from an increase in operating frequencies and/or better energy efficiency, and why not from an increase in the number of cores or the amount of cache memory.

Image 2: AMD Ryzen 7000/Zen 4: frequencies, models and characteristics, the point #cequelonsé
Credit: AMD

All Ryzen 7000 processors see their amount of L2 cache doubled Compared to the Ryzen 5000 (Zen 3 “Vermeer”): So we went from 512KB to 1MB of L2 cache per core. However, the amount of shared L3 cache does not change. and therefore we find 32 MB per CCD. AMD does not use its 3D V-Cache memory in its first Ryzen 7000, probably to reserve this (still expensive) technology for other future models.

These processors support PCI-Express 5.0 but also the DDR5 memory. AMD should integrate its technology EXPO (Extended Profiles for Overclocking), also known as RAMP (Ryzen Accelerated Memory Profiles), to these new Ryzen. This, equivalent to proprietary solutions from Gigabyte (EOCP), Asus (DOCP) and other motherboard manufacturers, is intended to compete with Intel’s XMP.

Four Ryzen models on Zen 4 architecture

Four “Raphael” models, taking advantage of this new Zen 4 architecture, would be planned a priori for the launch: the Ryzen 5 7600X, Ryzen 7 7700X, Ryzen 9 7900X, and Ryzen 9 7950X. The “smallest” of these Ryzen has 6 cores (with SMT, thus 12 threads managed simultaneously), while the “largest” has 16. Base frequencies vary between 4.5GHz and 4.7GHzfor a boost that can go up to 5.3 GHz, even 5.7 GHz in the most powerful model.

Model Ryzen 9 7950X Ryzen 9 7900X Ryzen 7 7700X Ryzen5 7600X
Hearts (Threads) 16 (32) 12 (24) 8 (16) 6 (12)
basic frequency 4.5GHz 4.7GHz 4.5GHz 4.7GHz
pulse frequency 5.7GHz 5.6GHz 5.4GHz 5.3GHz
L2 cache 16MB 12MB 8MB 6MB
L3 cache 64MB 64MB 32MB 32MB
PDT 170W 170W 105W 105W
ppt 230W 230W 142W 142W
Release date ? ? ? ?
Recommended selling price ? ? ? ?

The TDP of the Ryzen 5 7600X and Ryzen 7 7700X reached 105 wattswhile the Ryzen 9s benefit from a much higher TDP of 170 watts. This is significantly more than the TDP of the Ryzen 9 5900X and 5950X, which tops out at 105 watts. Note in passing that these CPUs should benefit from finer power management aimed at limiting spikes in processor consumption.

Ryzen 7000 series: what performance?

The latest rumors report an increase in IPC (instructions per clock cycle) of around ten percent, relative to the 19% increase that Zen 3 brought at the time. Thus, the main performance gain compared with the Ryzen 5000 it should come from the higher operating frequencies displayed by these newer CPUs.

Overall, therefore, we expect these Ryzen 7000s to deliver 15% better performance in single thread and 35% to 40% better performance in multi-thread. Energy efficiency should be improved by around 25%.

What prices do these Ryzen 7000 Series have?

If the launch date is supposed to be set for the end of August, around the 29th, with effective availability on September 15, the price of these four new Ryzen processors is not yet known.

AMD roadmap for consumer Zen 4 processors

#AMD #Ryzen #Zen #fréquences #modèles #caractéristiques #point #cequelonsé

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