Note that this article is not really about RNGs themselves, but mostly how to use one to generate an unbiased number within a given range from a "raw" RNG output which typically generates a stream of 32 or 64bit integers.
Regarding the performance of RNGs themselves it's mostly bound by how "random" your want your NG to be. If you don't really care about quality and need very good performance, for instance to procedurally generate assets in a videogame, there are extremely fast and somewhat decent PRNGs out there, such as XorShift. Of course you won't use that to generate PGP keys...
Regarding the performance of RNGs themselves it's mostly bound by how "random" your want your NG to be. If you don't really care about quality and need very good performance, for instance to procedurally generate assets in a videogame, there are extremely fast and somewhat decent PRNGs out there, such as XorShift. Of course you won't use that to generate PGP keys...