Bounce speed

This is not a big deal, i’m really satisfied, but how come the mixdown speed doesnt change with MUCH faster processors? Everything else is SO MUCH BETTER but the mixdown still takes 5 minutes like on my Pentium back in 1999. I know i run heavier stuff but still, i’d expect different results.

Macbook Pro quad i7, 10.8.3, cubase 7 , uad plugs