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AMD Zen5 Multithreading: Average Speed Boost of 18%, Up to 67%! Meanwhile, Intel Abandons It

kyojuro Monday, August 5, 2024

Intel's next-generation processors, Lunar Lake and Arrow Lake, do not support the AVX-512 instruction set and have also dropped hyper-threading technology. In contrast, AMD's Zen5 continues to support multi-threading.

Does Intel's decision suggest that hyper-threading is no longer beneficial? How does AMD's retention of this technology impact performance?

AMD Zen5 multi-threading boost: 29%! While Intel abandons it

Phoronix conducted specific tests to analyze the performance difference with the multi-threading technology on the Ryzen AI9HX370 switch. The operating system used was Ubuntu 24.04, and a total of 57 projects were run.

On average, enabling multi-threading technology on the Ryzen AI9HX370 improves performance by 18%. Certain projects, like the toyBrot Fractal Generator, show gains of up to 67%!

AMD Zen5 multi-threading boost: 29%! While Intel abandons it

When it comes to power consumption, there is minimal difference between single-threaded and multi-threaded modes. The average power consumption with multi-threading turned off is 19.24W, while with multi-threading enabled, it is 19.63W—a difference of only 2%.

Temperature levels also remain constant.

AMD Zen5 multi-threading boost: 29%! While Intel abandons it AMD Zen5 multi-threading boost: 29%! While Intel abandons it

Intel has not provided a clear explanation for eliminating hyper-threading technology. It may be due to the heterogeneous hybrid architecture like AVX-512, but Intel claims that removing hyper-threading from the P core can boost energy efficiency by 30%.

AMD Zen5 multi-threading boost: 29%! While Intel abandons it AMD Zen5 multi-threading boost: 29%! While Intel abandons it

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