AMD Epyc 9755 spotted with 128 cores and 650MB of cache

Too many cores for task manager to handle.

AMD Epyc 9755 processor has been spotted in a Windows Task Manager screenshot featuring 128 cores. The CPU comes bundled with a massive L3 cache pool, dwarfing our little desktop chips.

Shared by @9550pro, the screenshot shows Epyc 9755 CPU on Windows Task Manager. In it, we can see that the chip – or should we say chiplets since this beast carries 16 CCDs (Core Chiplet Die) – boasts 128 Zen 5 cores and 256 threads, clocked at 2.7GHz base and 4.1GHz boost. With this CPU likely being an engineering sample, we expect the final products to rock even higher frequencies.

We can also see that this monster isn’t alone, as it sits alongside another processor on a dual-socket motherboard, pushing the total available cores to 256 with 512 threads. There are so many threads to display on the screen that Windows Task Manager can’t show them all at the same time. Talk about a limitation we all would love to have. This number of cores doesn’t come cheap, however, as this model is targeting a 500W TDP, meaning a robust cooling solution is needed.

As if it wasn’t enough, Epyc 9755 comes bundled with a massive amount of cache, 650MB in total. This pool is split into 512MB of L3, 128MB of L2, and 10MB of L1. i.e. 4MB of L3 per core, 1MB of L2 per core, and 80KB of L1 per core, with eight cores packed inside one CCD. For reference, AMD Epyc 9654 Genoa carries 96 Zen 4 cores spread over 12 CCDs. Each core gets access to 4MB of L3 cache, plus 1MB of L2 and 64KB of L1, for a total of 496MB. So, a 31% increase in the cache without even considering potential 3D V-Cache models.

These are some impressive figures that we may see one day on our beloved desktop chips. The closest we can get is using dual-socket HEDT (High-End Desktop) PCs. Lastly, while we don’t have exact dates, AMD’s Epyc Turin CPUs are expected to launch later this year.

Fahd Temsamani
Fahd Temsamani
Senior Writer at Club386, his love for computers began with an IBM running MS-DOS, and he’s been pushing the limits of technology ever since. Known for his overclocking prowess, Fahd once unlocked an extra 1.1GHz from a humble Pentium E5300 - a feat that cemented his reputation as a master tinkerer. Fluent in English, Arabic, and French, his motto when building a new rig is ‘il ne faut rien laisser au hasard.’

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