AMD Ryzen 7 7840U Performance Benchmarks On Linux: Great Uplift For Zen 4 Laptops

Written by Michael Larabel in Processors on 6 July 2023 at 06:00 PM EDT. Page 2 of 8. 43 Comments.

Follow-up testing will look at the Ryzen 7 7840U performance with the AMD P-State driver that is the default with Linux 6.5+, performance on newer kernels, the Radeon 780M graphics, Windows vs. Linux performance, a detailed AVX-512 analysis, and other areas. For this round of Ryzen 7 7840U vs. Ryzen 7 PRO 6850U and Core i7 1280P benchmarking, Ubuntu 23.04 with the default Linux 6.2 kernel was used and the GCC 12.2 compiler and other stock packages.

All three laptops have 16GB of dual channel memory and NVMe storage and were cleanly loaded with Ubuntu 23.04. Again, no graphics tests today of the integrated performance until spending more time with the Radeon 780M. During the Linux benchmarking the CPU SoC power consumption was also monitored via the PowerCap/RAPL interface.

WireGuard + Linux Networking Stack Stress Test benchmark with settings of . Acer - Ryzen 7 7840U was the fastest.

High Performance Conjugate Gradient benchmark with settings of X Y Z: 104 104 104, RT: 60. Acer - Ryzen 7 7840U was the fastest.

libxsmm benchmark with settings of M N K: 32. Acer - Ryzen 7 7840U was the fastest.

libxsmm benchmark with settings of M N K: 64. Acer - Ryzen 7 7840U was the fastest.

Right off the bat the Ryzen 7 7840U performance proved to be very impressive compared to the prior generation Ryzen 7 PRO 6850U.

While delivering great generational uplift, the SoC power consumption between the 6850U and 7840U was similar and led to a nice lead in performance-per-Watt too. The Ryzen 7 7840U was easily surpassing the Intel Core i7 1280P Alder Lake processor under Ubuntu Linux.

Z3 Theorem Prover benchmark with settings of SMT File: 1.smt2. Acer - Ryzen 7 7840U was the fastest.

Z3 Theorem Prover benchmark with settings of SMT File: 2.smt2. Acer - Ryzen 7 7840U was the fastest.

LAMMPS Molecular Dynamics Simulator benchmark with settings of Model: Rhodopsin Protein. Acer - Ryzen 7 7840U was the fastest.

simdjson benchmark with settings of Throughput Test: Kostya. Acer - Ryzen 7 7840U was the fastest.

simdjson benchmark with settings of Throughput Test: TopTweet. Acer - Ryzen 7 7840U was the fastest.

simdjson benchmark with settings of Throughput Test: LargeRandom. Acer - Ryzen 7 7840U was the fastest.

Particularly for anyone doing any scientific work or heavy lifting from your laptop where AVX-512 can come into play (or even lots of JSON parsing with simdjson...) there is a lot of potential with Phoenix.

simdjson benchmark with settings of Throughput Test: DistinctUserID. Acer - Ryzen 7 7840U was the fastest.

Even when engaging AVX-512 with simdjson, the power consumption wasn't any higher than the prior generation Ryzen 7 PRO 6850U. I'll have a detailed look at AVX-512 laptop performance with the Core i7 7840U compared to older Intel Ice Lake and Tiger Lake laptops with AVX-512 later this month on Phoronix.

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