First AMD "Zen" Chips to be Quad-Core - [Techpowerup]

Some of the first CPUs and APUs based on AMD's next-generation "Zen" micro-architecture could be quad-core. "Zen" will be AMD's first monolithic core design after a stint with multi-core modules, with its "Bulldozer" architecture. Our older article details what sets Zen apart from its predecessor. As expected, in a multi-core chip, Zen cores share no hardware resources with each other, than a last-level cache (L3 cache), much like Intel's current CPU architecture.

There's just one area where Zen will differ from Haswell. With Haswell, Intel has shown that it can dump any number of cores on a chip, and make them share a proportionately large L3 cache. Haswell-E features 8 cores sharing a 20 MB cache. The Haswell-EX features 18 cores sharing 45 MB of cache. With Zen, however, the scale up stops at 4 cores sharing 8 MB of L3 cache. A set of four cores makes up what AMD calls a "quad-core unit." To be absolutely clear, this is not a module, the cores share no hardware components with each other, besides the L3 cache.

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