> you have "integer index" listed twice with two different values.

Yes, nbench outputs two integer indexes and two floating-point indexes for the reason explained there:

http://serverfault.com/questions/254684/how-do-i-interpret-bytemark-nbench-results

The two floating-point indexes are proportional between compared machines, that's why I only list it once. That's however not the case for the two integer indexes, hence I list them both.