[mythtv-users] Performance issue

[Yan-Fa Li]

The CelD is a much better CPU than all the Celerons before it, but 
compares badly against the AMD Semprons.  Clock for clock a Sempron 
smokes a Celeron in price performance.  Just check Anandtech.com for 
some the articles they've done.  The P4 design suffers very badly if 
it's starved for memory and cache, which makes the celery a complete dog 
before the D and a bad investment compared to a NForce2 and Sempron combo.

The Celeron is also held back by the i845 chipset which they are usually 
combined with.  It performs like crap compared to a newer i865 or i875 
which it can't take advantage of since it's been hobbled at 533MHz and 
no dual bank memory on the i845.

Yan

Robert Kulagowski wrote:
> 
>> I would expect a Cel 2.4 to give
>> performance 25% better than the PIII/733 or the PIII/800 lines above.
>> I would not expect your system to be capable of recording and viewing
>> live tv at the same time.  I'm building my first Mythbox from my
>> Athlon 800, but I'm using a pvr-250 (or a 350) as my base encoder to
>> reach the performance needed.
>>  
>>
> 
> That's a good guess, but not accurate.  A Celeron 2.4 Ghz has a _lot_ 
> more performance than a PIII/733Mhz.  While the cache on a Celeron is 
> smaller than a full P4, the core is the same.  And Celeron "D"s have 
> increased the onboard cache - older P4 celerons had 128K, the Celeron 
> "D"'s have 256K and run on a 533Mhz FSB.
> 
> 
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