Did that test with the same Ubuntu and Firefox install mentioned in my post (https://news.ycombinator.com/item?id=36985276 https://news.ycombinator.com/item?id=

Did that test with the same Ubuntu and Firefox install mentioned in my post (https://news.ycombinator.com/item?id=36985276 https://news.ycombinator.com/item?id=36985276) Results: * Firefox 115: 120 * Firefox without uBlock: 130 * Firefox without any addon: 135 * Chromium 114: 135 * Chromium without uBlock (only addon installed): 150 * Edge 109: 122 Which means that all are in the same ballpark. I feel this test is more about CPU. It is also constantly (re)loading contents from browserbench.org, which tells me that the test itself might be very sensible to (and thus invalidated by) the network conditions at the moment of the test. Should be easy and would be much more reliable to preload all assets, and then do the benchmark. EDIT: Adding values without uBlock Origin and without all extensions. We can see how having to parse all pages to check if there are elements to block, has its toll in CPU usage in the benchmark. For real-world cases of less CPU-intensive web browsing, blocking unwanted elements is immensely worth it.