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AMD 3D V-Cache Technical Test: Slightly more latency, but more processor performance

IT Home January 16 news, AMD 3D V-Cache technology has been developed for many years, 2021 official announcement. This technology uses chip stacking technology to increase CPU cache capacity by several times, dramatically improving processor performance without changing the core area. Chips and Cheese tested AMD processors equipped with 3D V-Cache, measuring the difference in cache latency between the new EPYC processors and the old ones.

AMD 3D V-Cache Technical Test: Slightly more latency, but more processor performance

Foreign media uses the AMD EPYC 7V73X (Milan-X) series to compare with the old EPYC 7763 (Milan-X) processor, the former equipped with 768MB L3 cache, the latter equipped with 256MB L3 cache, only one-third of the former.

The EPYC 7V73X has 64 cores, 128 threads, 2.2GHz and 3.5GHz acceleration

AMD 3D V-Cache Technical Test: Slightly more latency, but more processor performance
AMD 3D V-Cache Technical Test: Slightly more latency, but more processor performance

The test results show that the 3D V-Cache technology will increase the L3 cache latency slightly, and the Milan-X will increase the latency by 3-4 cycles. The performance gains from the large cache offset the small latency increase, and although the EPYC 7V73X has a lower main frequency, it is more powerful.

IT Home learned that AMD's new Milan-X series server processor was officially released in late 2021, still using the Zen 3 processor architecture, the flagship model 7773X has 64 cores, 128 threads, TDP 280W, and sells for more than $10,000.

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