Benchmarking 18 Years Of Intel Laptop CPUs: Panther Lake As Much As 95x The Speed Of Penryn

Written by Michael Larabel in Processors on 26 February 2026 at 10:50 AM EST. Page 2 of 12. 33 Comments.

👁 Selenium benchmark with settings of Benchmark: Speedometer 3.1, Browser: Firefox. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

First up were the web browser benchmarks given how common Firefox and Chrome use are on Linux laptops... With Firefox 146 across all the laptops tested on Ubuntu 26.04, going from Penryn to Panther Lake was an 8.88x improvement in raw performance. Or when looking at the CPU power efficiency from Sandy Bridge to Panther Lake in Speedometer 3.1 it was at 10.2x.

👁 Selenium benchmark with settings of Benchmark: Speedometer 3.1, Browser: Google Chrome. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

With Speedometer in Google Chrome 143 was a 9x difference from 45nm Penryn to 18A Panther Lake. Or 14.6x from Sandy Bridge to Panther Lake in performance-per-Watt in this Chrome browser benchmark.

👁 Selenium benchmark with settings of Benchmark: Jetstream 2, Browser: Google Chrome. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

👁 Selenium benchmark with settings of Benchmark: StyleBench, Browser: Google Chrome. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

Very significant gains over the course of time in web browser performance and that isn't even the most demanding benchmarks....

👁 Selenium benchmark with settings of Benchmark: WASM collisionDetection, Browser: Firefox. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

👁 Selenium benchmark with settings of Benchmark: WASM collisionDetection, Browser: Google Chrome. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

👁 Selenium benchmark with settings of Benchmark: WASM imageConvolute, Browser: Firefox. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

👁 Selenium benchmark with settings of Benchmark: WASM imageConvolute, Browser: Google Chrome. Core Ultra 7 256V - Zenbook S14 was the fastest.

With WebAssembly workloads the generational gains are even more significant for these Intel laptops of the past 18 years.

👁 Timed Linux Kernel Compilation benchmark with settings of Build: defconfig. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

Moving to code compilation benchmarks is where the results become much more wild. From the Core 2 Duo T9300 of 2028 to the Core Ultra X7 358H in 2026 was a 17x speed-up for compiling the Linux kernel in a default x86_64 configuration.

👁 Timed Linux Kernel Compilation benchmark with settings of Build: defconfig. Core Ultra X7 358H - MSI Prestige 14 was the fastest.

Going from Sandy Bridge to Panther Lake was over 11x the performance-per-Watt for compiling the Linux kernel.

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URL: https://www.phoronix.com/review/intel-penryn-to-panther-lake/2

⇱ Benchmarking 18 Years Of Intel Laptop CPUs: Panther Lake As Much As 95x The Speed Of Penryn - Phoronix

Benchmarking 18 Years Of Intel Laptop CPUs: Panther Lake As Much As 95x The Speed Of Penryn