The IBM 4768 is available on IBM Z® mainframes (z14® only), as crypto feature Crypto Express6S (CEX6S), feature code (FC) 0893.
The CEX6S provides over 2x performance in most cryptographic algorithms over the CEX5S. The following charts show the examples of operations per second for the IBM CEX6S, CEX5S, and CEX4S for various modes and cryptographic algorithms. All of these examples are on IBM Z systems.
Full performance graphs and results for the IBM CEX6S are available: