On Thu, Apr 28, 2005 at 05:09:22PM -0700, Brad Fuller wrote: > Axel Thimm wrote: > > >On Wed, Apr 27, 2005 at 08:36:18AM -0700, Brad Fuller wrote: > > > > > >>Axel Thimm wrote: > >> > >> > >> > >>>You do loose some performance currently due to MMX not working under > >>>64 bits. > >>> > >>> > >>Really? Are you refering to the sw part taking advantage of the HW? I > >>haven't heard of any chip issues. > >> > >> > > > >It doesn*t build w/o turning off MMX. > > > > > Well.. crummy! Why is that? (should I ask in the devel forum?) > > Does anyone have benchmarks, or even off the top of your head knowledge, > on the performance difference w/o MMX on 64-bit vs. w/MMX on 32-bit.
There have been some posts on this, check out the archives. > For mythtv, is having MMX a decided "got-to-have"feature for > performance? It depends. If you have a 64 bit platform chances are that you have enough power to do well w/o MMX support. -- Axel.Thimm at ATrpms.net
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