AMD hasn’t gone along the back of the spoon with the new generation of desktop chips recently announced by Computex in Taipei: almost all new to the Ryzen 7000s codenamed “Raphael”. While Intel narrowed the performance gaps and also got the hang of some performance metrics for 12 of them.and generation of Core chips, AMD aims to take (again) to 1time with this chip introducing a set of novelties. Compared to the previous generation Ryzen 5000 on the one hand, compared to the rest of the PC industry on the other.
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The main difference is the engraving efficiency of 5nm. Unlike Apple, which developed its M1 chips using the same process as TSMC (N5), AMD’s chip is not monolithic. Consistent with the philosophy of controlling manufacturing and production costs, AMD is once again playing with the technological bricks: the CPU component consists of two chiplets of Zen 4 cores engraved at 5 nm, while the inputs / output, memory controller as well as the graphics component are combined with a much more attractive chiplet engraved at 6 nm (N6) which is less expensive.
Up to 16 cores/32 strings
It’s hard to know if this chip, with up to 16 physical cores / 32 logical cores, will be able to attack Apple head-on in the performance / watt ratio. But what is certain is that unless there is a (impossible) total failure in the new Zen 4 architecture, AMD will have to lead Intel.
Like Intel chips, AMD equips its new chips with DDR5 and PCI Express 5.0, putting it on par. But to see the difference in energy efficiency and power density between 7 nm (Intel 7 process) and 5 nm in the world of smartphones, there is no saying that Intel also needs to quickly refine its carving. .
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In addition to the density of transistors – and therefore of CPU cores – this greater carving out the efficiency of a highly skilled TSMC process allows AMD to push frequencies higher. Very high: A presentation by AMD CEO Lisa Su shows a slide with a 5.5 GHz chip.
Amid the increasing number of cores, the technological advancement of DDR5 and PCIe 5, this return to the frequency race allows AMD to achieve more than 15% performance improvement in a task (a the thread).
Integrated RDNA 2 GPU as standard
As we have seen, the AMD chip consists of bricks with different carvings: the CPU cores (CCD for The Core Complex died) at 5 nm on one side, the inputs/outputs, the memory controller and the GPU at 6 nm on the other (assembled in a brick called an IOD for “I/O die”, literally “input/ output chip “).
Here the improvement is huge compared to previous generations of AMD desktop PC chips. While the Ryzen 3000 and Ryzen 5000 rely on an IOD engraved at 12 nm by GlobalFoundries (a company that was formerly AMD’s integrated foundry, editor’s note), AMD has benefited from a significant reduction in transfer at 6 nm .
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It provides space to combine a series of graphic features. While currently only a few special chips are stamped with a “G” suffix for graphics mixed with a Radeon Vega, all Ryzen 7000 chips benefit from a default GPU. And not just anything, the new RDNA 2 cores, the ones found on the Ryzen 6000, the Steam Deck or even the Xbox Series consoles and the PS5.
If we still don’t ignore the details of the number and frequency of these graphics cores, we already know that an RDNA 2 core up to x2 is more efficient than Radeon Vega cores. A level of performance with many advantages. It consumes less energy than a dedicated graphics card when running Windows/Linux on one side.
On the other hand, it offers 3D and multimedia services that are mostly enough to run all programs (even games, if you know how to keep a moderate level of definition and level of detail). Perfect for less expensive PCs… and for times of graphics card shortage!
New AM5 socket
After five years of loyal service, AMD’s AM4 socket introduced in March 2017 resigned and gave way to the AM5 socket. We go from 1331 to 1718 connection pins and the highest heat dissipation qualification from 105W to 170W!
Enough interconnection points to calmly accommodate the transition from PCIe 4.0 to PCIe 5.0, or the use of DDR5 memory instead of DDR4. And there’s no hybrid solution from AMD: DDR5 isn’t an option for the Zen 4, there are no motherboards that use old memory. But according to the initial design elements, the AM4 heatsinks can be compatible with the new socket.
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Who says new socket, says new chipset, this chip embedded in the motherboard that handles the connections of physical elements outside the CPU. AMD has released three new chips, from entry to high-end: the B650, X670 and X670E. No processor or chipset in this new batch handles DDR4 that will focus only on DDR5.
No model name, frequency details, number of cores (CPU and GPU): the Ryzen 7000 will only arrive in the fall run, AMD retains information that the company is adept at distilling before effective marketing.
Mendocino: a source of Steam Deck chips for laptops
On the sidelines of its powerful platform for desktop PCs, AMD is drawing a ridiculous chip for portable PCs from $ 399 to $ 699 that is currently presented under its code name “Mendocino”. The chip is interesting because it mixes the old and the new.
In the old days, Mendocino chips had to be with up to 4 physical cores (8 logical cores), but not Zen 4, nor Zen 3/3+ but simply Zen 2, an architecture that introduced in July 2019! That’s the improvement in the role because the current Ryzen 3000Cs are content with the CPU cores of the… Zen + (2018).
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However, the chip seems to have a bright future if you read the remaining elements that comprise it: sculpting from 12 nm to 6 nm, it drives LPDDR5 memory and its integrated graphics chip, too, is a the RDNA GPU. 2 – yes, like the Steam Deck chip!
While it’s a safe bet that AMD won’t push the number of graphic cores up to Ryzen 7000 chips, which have (no doubt modest) benefits in terms of 3D, above all hardware video decoding will benefit users (AV1, h.265, etc.).
Also watch the video:
Also watch the video:
On paper, performance should not only be above AMD’s previous entry-level chips, but power consumption should also be significantly lower. It’s enough to maintain the 10 hours of potential autonomy promised by AMD… when manufacturers play the game on their platform (quality of components, capacity and battery quality, etc.).
The first laptops equipped with the new AMD “Mendocino” chip are expected in the fourth quarter of 2022, priced from $ 399 to $ 699. Suffice it to say that the chip is compatible with Windows PCs and Chromebooks.