frequencies, models and characteristics, the point #whatonsé

frequencies, models and characteristics, the point #whatonsé

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As the official launch date for AMD’s future Ryzen 7000 processors is 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 architecture 4 intended to succeed Zen 3 (used by the Ryzen 5000). The opposite would in any case have been surprising given the time – we often count in years – needed to design a CPU architecture. Since then, a lot of information, official or not, has been added to the rather 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
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AMD Zen 4: a first appearance of an 8-core Phoenix Point processor

AMD Zen 4: the characteristics

With these new Ryzen, AMD is abandoning its AM4 socket for a brand new 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 7 nm engraving for the Ryzen 5000 processors to 5 nm engraving (TSMC’s N5 process) for these new CPUs. Logically, as with each 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 their doubled L2 cache quantity compared to the Ryzen 5000 (Zen 3 “Vermeer”): we therefore go from 512 KB to 1 MB of L2 cache per core. However, the amount of shared L3 cache memory does not change. and we therefore find 32 MB per CCD. AMD does not use its 3D V-Cache memory on its first Ryzen 7000s, probably to reserve this technology (still expensive) for other future models.

These processors support the 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 models of Ryzen on Zen 4 architecture

Four “Raphael” models, taking advantage of this new Zen 4 architecture, would a priori be planned 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, therefore 12 threads managed simultaneously), while the “biggest” has 16. The base frequencies vary between 4.5 GHz and 4.7 GHzfor a boost that can climb 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)
Base frequency 4.5GHz 4.7GHz 4.5GHz 4.7GHz
Frequency increase 5.7GHz 5.6GHz 5.4GHz 5.3GHz
L2 cache 16 MB 12 MB 8 MB 6 MB
L3 cache 64 MB 64 MB 32 MB 32 MB
PDT 170W 170W 105W 105W
PPP 230W 230W 142W 142W
Release date ? ? ? ?
Recommended retail 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 peaks at 105 watts. Note in passing that these CPUs should benefit from finer energy management aimed at limiting processor consumption peaks.

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 brought at the time by Zen 3. The main gain of performance compared to the Ryzen 5000 should therefore come from the higher operating frequencies displayed by these new CPUs.

Overall, we therefore expect these Ryzen 7000s to offer performance up by 15% in single-thread and 35% to 40% in multi-thread. Energy efficiency should be improved 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 15, the price of these four new Ryzen processors is not yet known.

AMD’s roadmap for consumer Zen 4 processors

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