AMD Ryzen 7040 Series Phoenix APUs Surprisingly Performant with AVX-512 Workloads
Intel decided to drop the relatively new AVX-512 instruction set for laptop/mobile platforms when it was discovered that it would not work in conjunction with their E-core designs. Alder Lake was the last generation to (semi) support these sets thanks to P-cores agreeing to play nice, albeit with the efficiency side of proceedings disabled (via BIOS settings). Intel chose to fuse off AVX-512 support in production circa early 2022, with AMD picking up the slack soon after and working on the integration of AVX-512 into Zen 4 CPU architecture. The Ryzen 7040 series is the only current generation mobile platform that offers AVX-512 support. Phoronix decided to benchmark a Ryzen 7 7840U against older Intel i7-1165G7 (Tiger Lake) and i7-1065G7 (Ice Lake) SoCs in AVX-512-based workloads.
Team Red's debut foray into AVX-512 was surprisingly performant according to Phoronix's test results—the Ryzen 7 7840U did very well for itself. It outperformed the 1165G7 by 46%, and the older 1065G7 by an impressive 63%. The Ryzen 7 APU was found to attain the highest performance gain with AVX-512 enabled—a 54% performance margin over operating with AVX-512 disabled. In comparison Phoronix found that: "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."
Team Red's debut foray into AVX-512 was surprisingly performant according to Phoronix's test results—the Ryzen 7 7840U did very well for itself. It outperformed the 1165G7 by 46%, and the older 1065G7 by an impressive 63%. The Ryzen 7 APU was found to attain the highest performance gain with AVX-512 enabled—a 54% performance margin over operating with AVX-512 disabled. In comparison Phoronix found that: "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."