frequencies, models and characteristics, the point #whatonsé

With the official launch date of AMD’s future Ryzen 7000 processors fast approaching, 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 4 architecture intended to succeed Zen 3 (used by Ryzen 5000). In any case, the opposite would have been surprising given the time – we often count in years – required to design a CPU architecture. Since then, a lot of information, official or not, has been added to the rather attractive spec sheet for this new generation of Ryzen 7000 processors. So this is an opportunity to spend some time taking stock.

Credit: AMD

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

AMD Zen 4: the characteristics

With these new Ryzen, AMD abandons its AM4 socket for an entirely new one socket AM5. The company is taking the opportunity to adopt DDR5 memory with its Ryzen 7000 Series processors and to change the burning node. We are therefore moving from 7nm engraving for the Ryzen 5000 processors to 5nm engraving (TSMC’s N5 process) for these new CPUs. Logically, as with every improvement in the fineness of 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 theirs doubled L2 cache amount compared to the Ryzen 5000 (Zen 3 “Vermeer”): we therefore go from 512 KB to 1 MB L2 cache per core. However, the amount of shared L3 cache memory does not change. and we therefore find 32 MB per CCD. AMD is not using its 3D V-Cache memory on its first Ryzen 7000s, probably to reserve this technology (still expensive) for other future models.

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

Four models of Ryzen on Zen 4 architecture

Four “Raphael” models that take advantage of this new Zen 4 architecture would be tentatively scheduled for launch: Ryzen 5 7600X, Ryzen 7 7700X, Ryzen 9 7900X and Ryzen 9 7950X. The “smallest” of these Ryzen has 6 cores (with SMT, therefore managing 12 threads simultaneously), while the “largest” has 16. Base frequencies vary between 4.5 GHz and 4.7 GHzfor a boost that can go up to 5.3 GHz, even 5.7 GHz on 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)
Fundamental frequency 4.5 GHz 4.7 GHz 4.5 GHz 4.7 GHz
Boost frequency 5.7 GHz 5.6 GHz 5.4 GHz 5.3GHz
L2 cache 16MB 12MB 8MB 6MB
L3 cache 64MB 64MB 32MB 32MB
PDT 170W 170W 105W 105W
PPT 230W 230W 142W 142W
Publication date ? ? ? ?
Suggested retail ? ? ? ?

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

Ryzen 7000 series: what performance?

The latest rumors report an increase in IPC (instructions per clock cycle) of around ten percent, to be related to the 19% increase that Zen 3 brought at the time. The biggest gain in performance compared to Ryzen 5000 should therefore come from higher operating frequencies shown by these new CPUs.

Overall, therefore, we expect these Ryzen 7000s to offer performance gains of 15% in single-thread and 35% to 40% in multi-thread. Energy efficiency should improve by around 25%.

What prices for these Ryzen 7000 series?

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

AMD’s roadmap for consumer Zen 4 processors

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