With the new speedometer 3.0 speed tests, I ran some tests with various browsers on my System76 2018 Galago Pro laptop.

Current specs are (via the inxi terminal command):

Host: Hrothgar Kernel: 6.6.10-76060610-generic x86_64 bits: 64
Desktop: Xfce 4.16.0 Distro: Ubuntu 22.04.4 LTS (Jammy Jellyfish)
Type: Laptop System: System76 product: Galago Pro v: galp3
serial: <superuser required>
Mobo: System76 model: Galago Pro v: galp3 serial: <superuser required>
UEFI: American Megatrends v: 1.05.08RSA-1 date: 12/08/2017
ID-1: BAT0 charge: 35.2 Wh (100.0%) condition: 35.2/35.3 Wh (99.7%)
Info: quad core Intel Core i5-8250U [MT MCP] speed (MHz): avg: 656
min/max: 400/3400
Device-1: Intel UHD Graphics 620 driver: i915 v: kernel
Device-2: Chicony USB2.0 Camera type: USB driver: uvcvideo
Display: x11 server: X.Org v: driver: X: loaded: modesetting
unloaded: fbdev,vesa gpu: i915 resolution: 1: 1920x1200~60Hz
2: 1600x900~60Hz
OpenGL: renderer: Mesa Intel UHD Graphics 620 (KBL GT2)
v: 4.6 Mesa 23.3.2-1pop0~1704238321~22.04~36f1d0e~dev

With FireFox:

FireFox speedometer 3.0 results

With Vivaldi:

Vivaldi speedometer 3.0 results

With Opera:

Opera speedometer 3.0 results

With Chromium:

Chromium speedometer 3.0 results

For comparison, here are the results from Safari on my Apple iPhone 13 mini:

iPhone 13 mini Safari speedometer 3.0 results

While the iPhone may score a higher benchmark, the laptop is still much faster and useful in practice. The surprise result here — in light of all the press coverage about Chrome being faster — is that FireFox scored fastest on the laptop.