On Tue, Jan 11, 2005 at 06:42:04PM -0500, Magnus Meinfretr wrote: > On Tue, 11 Jan 2005 16:28:30 -0500, Mike Frisch <[EMAIL PROTECTED]> wrote: > > > At 1.25GHz or 1.42GHz, my guess is that it does *not* have enough > > horsepower to decode HDTV. > > What you forget is this is a 1.25GHz PowerPC G4. This is not a > Pentium 4 or an Athlon. Don't fall into the mental trap of thinking > the GHz ratings even compare.
But don't believe your Mac-loving friends that an X GHz PPC is better than a 2X or 3X GHz P4. It isn't true, or at least depends on your application. I did some benchmarking for a particular application earlier this year and found that a G3-class PPC (specifically an IBM 750FX, as used in some of the iBooks) was roughly equal to a Pentium III for a given MHz, or possibly slightly SLOWER. That was for integer networking work, which is clearly different to video processing. > This is probably (conservatively) at least as fast as a 2GHz Pentium 4 > for all intents and purposes. Any code that makes good use of the > Altivec instructions could very well be beyond current x86 performance > potential. But is Altivec better than MMX + SSE + SSE2 + 3DNow? Hamish -- Hamish Moffatt VK3SB <[EMAIL PROTECTED]> <[EMAIL PROTECTED]>
_______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
