We've done a little bit more of an in-depth test with the HTC One, and subjected it to our Benchmarking system.
For this we've used three platforms: Antutu, SunSpider and PeaceKeeper to a decent level of comparison. However, it's clear this is a powerful phone indeed, staying at the sharp end of all our testing, and even besting the normally-impregnable Galaxy S4 (although only the quad core version).
If numbers mean a lot to you, feast your eyes below. If they don't, then just take our word for it: the HTC One is a blindingly quick phone.