The openssl tool can generate RSA 512 BIT key DH 512 bits keys, benchmark, cipherlist and engine. But like the preference panel, please remember that it s still in heavy beta test and in the future will be transformed in a full featured gui for your open ssl maintenance & operation. Actually you can save a ssl session or stop all if you think it took too much time for the speed test. For best results the benchmark must stay in focus (frontmost) to prevent it from going idle. There is also a manual of the last openssl. You can also send a mail of the session.