AMD Zen Won’t Use Shared FPU Per Two Cores – Report
New information about AMD’s 2016 Zen core has surfaced on the web which claims that the upcoming CPU architecture won’t use the shared FPU like Bulldozer.
The Zen architecture will be built on a 14 nanometer process. It will feature a unified AM4 socket with its GPU-equipped APU counterparts and include support for DDR4 memory.
Now, according to report from Fudzilla, AMD is planning to drop the “core pair” approach that was a foundation of Bulldozer, which means that there will not be a shared FPU anymore.
Designed on the 14nm node, AMD Zen utilizes SMT Hyperthreading technology just like Intel. This will allow the CPU to process two threads at once, resulting in a performance increase of 40% Instruction Per Clock (IPC) throughput.
The source further reveals that Zen is set to use a similar scheduling model as that of Intel’s and that it will use competitive hardware and simulation to define any needed scheduling or NUMA changes.
However, two cores will still share the L3 cache, and that’s because the 14nm has enough space for the FPU inside of the Zen core. This approach might be faster.
Nothing is confirmed yet, so take these details with a grain of salt. We’ll know what AMD packs in the Zen core once the product is launched in 2016. While a concrete release date isn’t yet mentioned, AMD did state that Zen will be available starting next year.