Latest AMD Zen Details Confirm 32-Core CPUs with SMT Design
Earlier this month, a leaked Linux patch was spotted online suggesting that upcoming AMD x86 processors based on Zen will feature up to 32 physical cores. The report has now been confirmed by a computer engineer at CERN, who along with this, revealed a few other details about Zen architecture that we haven’t seen to date.
In a recent IT technical forum discussion at CERN, engineer Liviu Valsan pulled up a slide on AMD Zen architecture, revealing that it would arrive at some point in a 32-core implementation. To achieve this core design, Valsan says AMD would implement a pair of 16-core complexes on a single die, with a high speed interconnect between them — that would presumably reduce or be void of bottlenecks.
It’s worth mentioning that these 32-core CPUs will be aimed at the data center and other enterprise class applications. They are highly unlikely to hit the consumer market, where FX processors could go up to 8 cores, or even 16 at some point.
Besides the core count, another exciting feature highlighted in the slide is Symmetrical Multi-threading (SMT) design. Zen will be the first-ever CPU architecture from the company to launch with the SMT design, which AMD hopes will bring same performance gains comparable to Intel’s Hyper Threading technology.
Talking of performance gains, AMD Zen is rumored to bring greater than 40% improvement in instructions per clock (IPC) over their current lineup. This dramatic increase in IPC, combined with higher core count, could offer very potent and compelling solutions in the data center applications.
Last but not least, Valsan also pointed out that AMD’s next-gen architecture will support DDR4 memory and PCI Express Gen 3.0.
AMD will launch Zen to consumers later this year.