What is the latency and throughput of the RDRAND instruction on Ivy Bridge?

Question

I cannot find any info on agner.org on the latency or throughput of the RDRAND instruction. However, this processor exists, so the information must be out there.

Edi

Answer 1

Here are some performance figures I get with rdrand: http://smackerelofopinion.blogspot.co.uk/2012/10/intel-rdrand-instruction-revisited.html

On a i5-3210M (2.5GHz) Ivybridge (2 cores, 4 threads) I get a peak of ~99.6 million 64 bit rdrands per second with 4 threads which equates to ~6.374 billion bits per second.

An 8 threaded i7-3770 (3.4GHz) Ivybridge (4 cores, 8 threads) I hit a peak throughput of 99.6 million 64 bit rdrands a second on 3 threads.