On Thu, Apr 17, 2003 at 10:53:57AM -0700, Dennis Castleman wrote: > ALL > > Anybody know the performance differences I can expect using a MIPS 5K core > @250 Mhz in 64bit mode versus 32bit mode? > It really depends on the applications. The biggest gain from 64bit, other than the obviously bigger address space, is 64bit data manipulation. A single 64bit instruction (add/sub/...) is carried out by several instructions in 32bit. If your apps are heavy on 64bit operations, then you gain. Otherwise I suspect no performance gain or even possibly a little worse performance due more stress on cache/memory subsystems. I am sure others with more 64bit experience probably have more to say. :) Jun
