AMD Ryzen 7040 Series Shows Great AVX-512 Performance For Laptops / Mobile / Edge

Written by Michael Larabel in Processors on 13 July 2023 at 12:00 PM EDT. Page 2 of 8. 34 Comments.

Embree benchmark with settings of Binary: Pathtracer ISPC, Model: Asian Dragon. Ryzen 7 7840U: AVX512 On was the fastest.

Kicking things off happened to be the Embree ray-tracing kernels, with that open-source maintained by Intel it has long featured AVX-512 support via ISPC. Not only was the Ryzen 7 7840U faster outright than the older Core i7 1165G7 Tiger Lake SoC but the relative impact from AVX-512 was greater too. With the asian dragon model the Ryzen 7 7840U saw its performance boosted by 23% compared to the i7-1165G7 going up by 12% or the Ice Lake SoC up by 6% with AVX-512.

The Ryzen 7 7840U was delivering much better performance while also consuming significantly less power than the Ice Lake and Tiger Lake mobile processors as monitored via the RAPL/PowerCap interfaces.

This yielded a very nice improvement in performance-per-Watt for this Phoenix SoC.

Leveraging AVX-512 hadn't impaired the peak frequency being obtained nor the CPU SoC temperature

Embree benchmark with settings of Binary: Pathtracer ISPC, Model: Asian Dragon Obj. Ryzen 7 7840U: AVX512 On was the fastest.

Embree benchmark with settings of Binary: Pathtracer ISPC, Model: Crown. Ryzen 7 7840U: AVX512 On was the fastest.

The strong Ryzen 7 7840U was shown in Embree 4.1 across a variety of different models.

OpenVKL benchmark with settings of Benchmark: vklBenchmark ISPC. Ryzen 7 7840U: AVX512 On was the fastest.

With Intel's OpenVKL volume kernel library project also having long enjoyed AVX-512 tuned performance for early Xeon Scalable processors at the time, the Ryzen 7 7840U was showing great uplift here too when toggling AVX-512.

The Ryzen 7 7840U performance was looking good in the perf-per-Watt department along with the thermals and frequency when AVX-512 was being leveraged.

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