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

When taking the geometric mean of the initial 268 benchmarks run on these three laptops, the Ryzen 7 7840U came out to being 23% faster than the prior generation Ryzen 7 PRO 6850U. This is terrific generational uplift across a wide range of tests all while maintaining 8 cores / 16 threads and for many of the heavy AVX-512-capable workloads the gains were much greater. The Ryzen 7 7840U was much faster than the lone Intel Alder Lake laptop test candidate with unfortunately having no Raptor Lake laptop for Linux testing.

Making the 23% boost to generational performance even more impressive was the CPU power metrics. Across the 268 benchmarks, the Ryzen 7 7840U in the Acer Swift Edge 16 has a 16.8 Watt average power draw and a peak of 30 Watts. The Ryzen 7 PRO 6850U meanwhile had a 16.3 Watt average and 28 Watt peak. For most workloads the Ryzen 7 7840U power use wasn't any higher at all than the 6850U. These real-world power results also align with the AMD's 7840U power rating of a 28 Watt TDP and up to 30 Watt cTDP value -- it wasn't exceeded like is commonly found with Intel laptop processor power ratings.

Those wishing to see all 268 benchmarks in full can see this result page for all of my benchmark data.

From the CPU performance side, the Ryzen 7 7840U is a great upgrade over prior generation laptops like the Ryzen 7 PRO 6850U. Zen 4 has been terrific on desktops and servers while now from my initial laptop experience has been nice -- at least on the CPU side. There are the Radeon 780M graphics that are next on my agenda to look at more closely to see what caveats there are or if everything is all terrific if riding the very latest upstream as opposed to what's currently shipping in the likes of Ubuntu 23.04. But at least for standard desktop use it's been working well on the Acer Swift Edge 16 when moving to the KDE Plasma desktop. The other big area to explore is about Ryzen AI (XDNA) support under Linux. But at least from the general CPU performance and support under Linux, the Ryzen 7840U is looking great on Linux.

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