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

Across all of the AVX=512=capable workloads tested, the Ryzen 7 7840U within the Acer Swift Edge 16 was putting on a great show. Similar to the Ryzen desktop and EPYC server benchmarks with Zen 4, the AVX-512 with the new Phoenix mobile/laptop chips is in great shape.

When taking the geometric mean of all the performance results used for this comparison, the Ryzen 7 7840U was 54% faster compared to when disabling AVX-512. In comparison the i7-1165G7 Tiger Lake impact came in at 34% with these AVX-512-heavy benchmarks or 35% with the i7-1065G7 Ice Lake SoC for that generation where AVX-512 on Intel laptops became common.

Running these AVX-512 heavy codes hadn't impacted the peak frequency being achieved for this laptop and the Ryzen 7 7840U had no troubles matching the peak frequencies observed when not engaging AVX-512. Tiger Lake was also in good shape in this regard while Ice Lake (and Skylake-X) is where there tended to be more frequency repercussions.

With using AVX-512 on the Ryzen 7040 series laptops you can safely do so without worrying over loss of battery life... The CPU power numbers remain basically the same as if sticking to AVX2 or other non-AVX-512 code paths.

Likewise, the CPU SoC temperature of the Ryzen 7 7840U was roughly the same when using AVX-512.

Overall the AVX-512 usage across the AMD Zen 4 product spectrum has been great. The efficient AVX-512 usage on the mobile/laptop processors is great for those developers wanting to work and test code from their device, if wanting to use any AI / deep learning software for edge computing or related use-cases, or just enjoying other AVX-512 optimized software from CPU-based renderers to other creator software packages. Those wishing to go through this round of data I collected for Phoenix / Tiger Lake / Ice Lake can find it here with all the individual per-test metrics.