What happened to the AMD Zen 3+ CPU?

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What happened to the Zen 3+ CPU, was it cancelled by AMD?

For a while there was talk of a future AMD core under the name Zen 3+, which was supposed to be an improved version of the Zen 3 cores that would be seen in some desktop AMD Ryzen under the codename Warhol. For some time now the mention of this processor has disappeared. What has happened?

The roadmaps of many firms change for strategic reasons, and many times goods that were supposed to be launched to the market and had been leaked to various insiders are dropped, while other times they are the consequence of misunderstandings and uncertainty that end up making the ball bigger. The Zen 3+ cores are one of these examples; let’s see what happened to them.

The origin of the AMD Zen 3+ cores rumour

AMD produced a variation of the original Zen processor based on the GLOBALFOUNDRIES 12 nm node a few years ago, dubbed Zen+, under the Ryzen 2000 series. It was not a change architecturally from the 14 nm version of the device; rather, Lisa Su’s had simply shifted their Zen core to a more sophisticated, but compatible, derivative production node.

This is also true for TSMC’s 6 nm node, a more sophisticated version of the 7 nm node that is backward compatible with existing designs. AMD has taken use of this for the next generation of their APUs, codenamed Rembrandt.

This sparked rumors regarding a Zen 3+ core at the 6nm node, which was said to appear in the form of a new CCD Chiplet for a rumored new AMD Ryzen 6000 codenamed Warhol and Rembrandt.

For some time now, the rumors of a Zen 3+ core have been deflating, the news in Rembrandt are more in other sections outside the CPU such as the use of RDNA 2 as integrated GPU and support for DDR5 and LPDDR5. 

While AMD changed the CPU in its previous generation APUs, it will alter everything but the CPU in the next generation. Warhol, on the other hand, just dropped off the map a long time ago.

Zen 3+ might have gone Unnoticed!

We have little doubt that the Zen 3D core that Lisa Su showed at a conference a few months ago is AMD’s attempt to boost the performance of its Zen 3 cores and would thus take the position previously occupied by the fabled Zen 3+.

The Zen 3D technology based on V-Cache does not need the development of a 6 nm version of the Zen 3, since the 7 nm model was originally designed to accommodate the V-Cache. So, although there would be no CCD Chiplet under TSMC’s 6 nm node, there would be variants of the existing Zen 3 with the V-Cache placed on top of it.

There is talk that the performance improvement thanks to the V-Cache is 15% and could become a good answer to Intel’s Alder Lake. In any event, and for marketing purposes, the name Zen 3D makes far more sense than Zen 3+, as it more accurately describes the technology.

At the present, reports indicate that there will be no Ryzen 6000 series based on Zen 3D, and that the nomenclature of the Zen 3 models with V-Cache will be inside the Ryzen 5000 series, but with the 3D designation at the end. The Ryzen 7 5800X with V-Cache, for example, might be called Ryzen 7 5800X-3D, but this is only a rumor.

In any case, it would be contingent upon the date of the Zen 4-based CPUs’ introduction. AMD makes little sense in launching these CPUs concurrently with the Zen 4-based ones in the coming months. Additionally, both CPUs may share space in the 2022 lineup. In any event, we shall know for certain in a few weeks or months.

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