[linux-audio-user] CPU clock - beware

[Stefan Scheffler]

Ryan Underwood schrieb:

>On Sat, Jul 24, 2004 at 11:33:07AM -0400, Matthew Barber wrote:
>  
>
>>generally wants to run at about 33Mhz (unless you have a very new board
>>with PCI-X or some such), and AGP at 66Mhz, and these values will
>>generally be a fraction of the fsb.  So if your fsb is 66Mhz, PCI will
>>be 1/2FSB.  If it's 100Mhz, PCI will be 1/3.  Setting it to 75Mhz may
>>cause it to still be in the 66Mhz realm as far as the division is
>>concerned, and set PCI to around 38Mhz, which may cause a lot of
>>problems.
>>    
>>
> <>
> Yes, one thing this used to do was to cause data corruption on certain
> Maxtor hard drives, at least under windows. I think in linux, you can
> pass a idebus= option to the kernel to tell it that the bus is
> overclocked.
>
> Also, even when the PCI bus is run asynchronously, while the data
> corruption issues aren't around anymore, there is unfortunately a
> latency tradeoff, which may make using a 75MHz/83MHz FSB not even worth
> it in the end.
>
ouch yeah I already knew it is a bad idea .. that wasn't really meant as 
a recommendation. I might even have killed my old MB that way (didn't 
have any use for it anyway ...  so it wasn't a big loss :))