Just an old machine running all 3 benchmark tests at https://browserbench.org/ and combining the results. It probably doesn't take into account a lightweight browser on a simple web page for feeling like the fastest in the bunch. Is there a browser that could beat that Chromium number on this same machine?
Dell Inspiron 1525 laptop (circa 2008-2009)
Pentium Dual T2390 @ 1.80GHz
Bionic Pup 32 8.0
4GB DDR2 6400
120GB SSD
Chromium 103.0.5060.134 - 58.04
Iron portable 89.0.4550.0 - 56.05
Firefox 103.0.1 - 49.39
Seamonkey 2.53.13 - 13.20
Palemoon 27.1.2 - 9.77
Light 48.0 - 5.83
*Tests where it did not load or crashed were given a 0.