Lenovo ThinkPad P14s Gen 4 w/ AMD Ryzen 7 PRO 7840U Running Nicely On Linux

Written by Michael Larabel in Computers on 26 September 2023 at 09:00 PM EDT. Page 2 of 6. 51 Comments.

For getting an idea as to the performance with the Lenovo ThinkPad P14s Gen 4 / Ryzen 7 PRO 7840U, I benchmarked it against a set of other laptops on-hand for being able to conduct a fresh comparison on the Ubuntu 23.10 development state:

Lenovo ThinkPad P14s Gen 4 AMD Ryzen 7 PRO 7840U, Linux Ubuntu 23.10

The tested laptops included the Lenovo ThinkPad P14s Gen 4 (Ryzen 7 PRO 7840U), Acer Swift Edge 16 (Ryzen 7 7840U), Lenovo ThinkPad X13 Gen3 (Ryzen 7 PRO 6850U), HP Dev One (Ryzen 7 PRO 5850U), Dell XPS 13 9310 (Core i7 1165G7), and MSI MS-14C6 (Core i7 1280P). Again, the selection of laptops was limited by those i had on hand for being able to conduct a fresh and relevant comparison.

Besides looking at the raw performance across these various AMD and Intel laptops, the CPU performance-per-Watt was also explored via the exposed RAPL/PowerCap sysfs interfaces.

Selenium benchmark with settings of Benchmark: Jetstream 2, Browser: Firefox. Ryzen 7 7840U was the fastest.

Selenium benchmark with settings of Benchmark: Jetstream 2, Browser: Google Chrome. Ryzen 7 7840U was the fastest.

With the JetStream 2.0 benchmark in Google Chrome and Mozilla Firefox, the Ryzen 7 PRO 7840U within the Lenovo ThinkPad P14s Gen 4 was slightly slower than the Acer Swift Edge 16 with the Ryzen 7 (non-PRO) 7840U. On a performance-per-Watt basis though with Firefox 117, the Lenovo laptop was ahead. In any event both of these AMD Phoenix laptops performed very well in this modern web browser benchmark.

Selenium benchmark with settings of Benchmark: PSPDFKit WASM, Browser: Firefox. Core i7 1280P was the fastest.

Selenium benchmark with settings of Benchmark: PSPDFKit WASM, Browser: Google Chrome. Core i7 1280P was the fastest.

Selenium benchmark with settings of Benchmark: WASM collisionDetection, Browser: Firefox. Ryzen 7 7840U was the fastest.

Selenium benchmark with settings of Benchmark: WASM collisionDetection, Browser: Google Chrome. Core i7 1280P was the fastest.

Selenium benchmark with settings of Benchmark: WASM imageConvolute, Browser: Firefox. Core i7 1280P was the fastest.

With WebAssembly workloads the Intel Alder lake MSI laptop performed competitively still to the latest AMD Zen 4 laptops.

Timed Godot Game Engine Compilation benchmark with settings of Time To Compile. Ryzen 7 PRO 7840U was the fastest.

When moving to more demanding workloads like code compilation, the Ryzen 7 PRO 7840U within the Lenovo ThinkPad P14s Gen 4 was showing a significant advantage over the consumer Acer Swift Edge 16 with the Ryzen 7 7840U, which in turn was already a nice upgrade over prior generation AMD laptop CPUs.

Explaining the significant difference here between the Ryzen 7 7840U and Ryzen 7 PRO 7840U was the Lenovo ThinkPad P14s Gen 4 able to run up to a 36 Watt power draw and sustain a 31 Watt average while the Swift Edge 16 was maintaining a 16 Watt average.

Timed Linux Kernel Compilation benchmark with settings of Build: defconfig. Ryzen 7 PRO 7840U was the fastest.

The Ryzen 7 PRO 7840U with the Lenovo ThinkPad was much faster than all of the other laptops tested. Funny enough the Core i7 1280P was pulling more power than the Phoenix SoC while delivering much slower results.

SVT-AV1 benchmark with settings of Encoder Mode: Preset 8, Input: Bosphorus 4K. Ryzen 7 PRO 7840U was the fastest.

The strong performance of the Lenovo ThinkPad P14s Gen 4 continued into the video encoding realm with encoders like SVT-AV1 showing great performance out of this laptop in its default power profile.

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