<p>Intel's RdRand is a high-quality, cryptographically-secure, psuedorandom number generator.  There is a detailed description of what it is, how to use it, how it has been used, and how fast it is to use given in a paper here (<a href="http://iopscience.iop.org/article/10.3847/1538-4357/aa7ede/meta;jsessionid=A9DA9DDB925E6522D058F3CEEC7D0B21.ip-10-40-2-120" rel="nofollow noreferrer">http://iopscience.iop.org/article/10.3847/1538-4357/aa7ede/meta;jsessionid=A9DA9DDB925E6522D058F3CEEC7D0B21.ip-10-40-2-120</a>) or non-paywalled version here (<a href="https://arxiv.org/abs/1707.02212" rel="nofollow noreferrer">https://arxiv.org/abs/1707.02212</a>).</p>

<p>I think sections 2.2.1 and 5 have what you are looking for.</p>
Is intel's RdRand TRNG or PRNG?
<p>I've searched the net for quite a while and couldn't find a definitive answer. I want to know the quality of random numbers generated by intel's rdrand instructions. How does it compare to <a href="http://www.idquantique.com/component/content/article.html?id=9" rel="nofollow">IDQ's</a> cards for example? Is it truly random or pseudo random?</p>

<p>Thanks</p>