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"Zen 4" Delidding Hints At A Big Bandwidth Bump For Ryzen 7000 3D V-Cache CPUs

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    "Zen 4" Delidding Hints At A Big Bandwidth Bump For Ryzen 7000 3D V-Cache CPUs

    Better, stronger, faster!

    AMD's Ryzen 7 5800X3D is a bizarre processor. Historically, to make a faster CPU, you either improve the architecture or increase the clock rate, but AMD made huge, double-digit percentage gains in gaming by simply slapping an extra 64MB of L3 cache on top of its existing CPU. The company's about to do the same thing with its Zen 4-based Ryzen 7000 processors, and according to recent analysis, it may see even bigger gains.

    This information originates with Tom Wassick, who does semiconductor packaging stuff for IBM, although he posted the news on his personal Twitter account and not as an IBM employee. After delidding his Ryzen 5 7600X and removing the thermal interface material, he noted that there appear to be more Through-Silicon Via (TSV) columns, "including at least 2 much larger and denser arrays." That implies that AMD designed the Zen 4 CCD to be more optimized for the installation of 3D V-Cache, with greater throughput between the cache die and the compute die.

    TSVs are essentially channels in a microprocessor that allow connections to be made through the silicon (thus the name). In this specific case, the only likely use for them would be for the application of vertically-stacked cache, which AMD calls 3D V-Cache. The company already announced that there will be 3D V-Cache versions of the Ryzen 7000 processors, and rumors have them showing up early next year—possibly with an announcement at CES.


    Sources: Hot Hardware, Tom Wassick (Twitter)

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