[mythtv-users] AMD Athlon 64 CPUs and MythTV Compiling

Aaron aaron at chinesebob.net
Mon Dec 20 21:28:25 UTC 2004

I would go with the Athlon 64, the whole clock speed thing doesn't really
matter as much anymore. In many cases a 2GHz Athlon 64 will outperform a
3GHz Intel. The Athlon 64 has a built in memory controller, lots of cache,
and most if not more SSE and MMX type extensions. You would also have the 
ability to switch things to 64bit as they become available. All of the
core Operating system and most applications are already ported and I 
would expect them to get much faster once people start optimizing for
Athlon 64. And it does cost less.

Quoting Brad Templeton <brad+myth at templetons.com>:

> On Mon, Dec 20, 2004 at 10:34:02AM -0600, Drew Zerdecki wrote:
> > I am about to purchase a CPU/mobo for a mythtv box.  I read somewhere 
> > that it is harder to compile builds for MythTv on these AMD Athlon 64 
> > chips.  Specifically I am looking at the AMD Athlon 64 3000+.  It is 
> > relatively cheap and gets good reviews.  On the other hand I am also 
> > looking at the Intel 3Ghz which isnt too much more but the good 
> > motherboards for this slot T chip are a lot ore expensive.  Any 
> > recommendations?
> Some applications when compiled for the ath-64 are faster.  Some are
> _slower_ and you prefer to do them in 32 bit mode, though I don't think
> many are a lot slower.   Of course, many of your RPMs will be in 32
> bit mode for a while.    I would suspect an mpeg decoder written with
> 64 bits in mind might do well, but I don't know if anybody has done that.
> However, no question, the P4-3ghz is way faster than the Athlon-3000 (not
> Ath64) at mpeg decoding.    30% idle or less on Ath-3000.  60% idle on
> P4-3ghz.
> This is because the P4-3ghz is at 3ghz, while the Athlon-3000 is at 2.2ghz.
> The ath64-3000 is at 2ghz -- it might even be slower than the regular
> athlon.

More information about the mythtv-users mailing list