SMT Proves Very Advantageous For AMD Ryzen AI MAX Strix Halo Performance
In technical computing applications there continued to be healthy gains illustrated by the presence of SMT on this 16-core Strix Halo laptop.
In total more than 200 benchmarks were run for this SMT comparison on the AMD Ryzen AI MAX+ PRO 395.
When taking the geometric mean of all the benchmarks carried out, having SMT on the 16-core Ryzen AI MAX+ PRO 395 increased the performance overall by 1.23x. Across the wide range of multi-threaded applications and diverse Linux workloads tested, Simultaneous Multi-Threading on AMD Zen 5 continued to prove very advantageous. There were significant gains in real-world software from having SMT available, even with a 16-core laptop.
Especially important given the laptop form factor is that the AMD Ryzen AI MAX+ PRO 395 power consumption was similar with/without SMT... 52 Watts without SMT or 53 Watts with SMT, 72 Watt peak in either run on this HP ZBook Ultra G1a. Considering the sizable performance gains, SMT proved itself very lucrative on AMD Strix Halo -- and similar to the SMT benefits on the AMD EPYC 9005 server CPUs.
Lastly, here is a side-by-side breakdown for where SMT was most beneficial to least:
SMT on AMD Strix Halo showed the greatest gains for video encoding workloads along with 5G/RAN, some database workloads, 3D rendering with creator applications, OpenMP-threaded image manipulation, and other workloads.
Thanks to HP for having supplied the HP ZBook Ultra G1a for review and benchmarking at Phoronix. If you appreciate all of these detailed Linux performance benchmarks at Phoronix, consider joining Phoronix Premium for the site's 21st birthday.
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