[by]

I only skimmed the article, so maybe they said this, but for choosing from a small range, for example 0..51, you can get several of these from a 32 bit random number with this algorithm

https://stackoverflow.com/questions/6046918/how-to-generate-...

You should be able to run a 64 bit PRNG once and pick at least 8 random cards from a deck.

[ballenf]

The article's conclusion was that the PRNG generation method used is usually not the bottleneck, but how you take that to get a result is. Don't know if that applies to the algorithm linked, but the author's point was that bottlenecks are more likely to arise in the code that surrounds the PRNG algorithm than in the call to PRNG itself.