511 - Chrome without any extensions

433 - Clean firefox install

500 - Clean edge install

On an AMD Ryzen 7950X3D / 5600MHz RAM

Interestingly, I got substantially different results depending on whether I used chrome with my typical extensions or not. Looking at the flamegraph, I don't seem to see the full picture of why there's such a substantial difference. Bitwarden/React Developer tools (the 2 primary extensions I use) don't seem to make enough of an impact to account for the roughly 40% performance increase seen without them. The browserbench javascript accounted for ~38.6% of the overall time taken for the benchmark, but the sum of my extensions was only 6.5%. I'm not incredibly familiar with browser performance profiling, so there's probably more to the story.

  457 - Chrome
  444 - Safari
  348 - Firefox

202 ± 4.7 - Chrome

184 ± 5.0 - Firefox

171 ± 2.6 - Safari