[mythtv-users] 32 vs. 64 bit, any significant difference?

sonofzev at iinet.net.au sonofzev at iinet.net.au
Fri Dec 18 05:22:43 UTC 2009

>On Thursday 17 December 2009 03:10:54 pm Robin Hill wrote:
>> On Thu Dec 17, 2009 at 08:31:59PM +0100, belcampo wrote:
>> >
>> > Are there any hard facts that prove these assumptions ?
>> > Transcoding 32 vs 64bit 512MB vs 2-8GB
>> There's some transcoding figures at:
>> http://hans.fugal.net/blog/2008/04/20/64-bit-transcoding/
>> Not transcoding, but there's some comparisons of other operations at:
>> http://tuxradar.com/content/ubuntu-904-32-bit-vs-64-bit-benchmarks
>> AMD have some a good general comparison at:
>> http://forums.amd.com/devblog/blogpost.cfm\?threadid=93648&catid=317
>FWIW, I wrote a fairly early review (in 2004!) of the AMD64 architecture under 
>Linux, with benchmarks:
>I didn't include any video transcoding tests, but using oggenc to encode audio 
>took 70% of the time to run on 64-bit as on 32-bit.
>Of course, modern computers and software are substantially different from 
>those of five years ago, but the x86 vs. x86-64 (aka AMD64) architectures are 
>fundamentally the same.
>Rod Smith

Of course transcoding is not something I have done a direct comparison of,
however basic viewing and recording don't "feel" like there is any difference
between a 32 bit BE and a 64 bit BE. 



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