Re: best for Linux: iBook or PowerBook?
On Wed, Jan 21, 2004 at 05:27:32PM +0100, Sven Luther wrote:
> On Wed, Jan 21, 2004 at 05:20:16PM +0100, Vincent Hanquez wrote:
> > On Wed, Jan 21, 2004 at 04:27:47PM +0100, Sven Luther wrote:
> > > Are you sure ? Notice that the only difference between a 744x and the
> > > corresponding 745x is the absence of external L3 cache. In particular,
> > > there is no way to tell which version of the CPU is used from a software
> > > point of view. So, of using a 7445 or a 7455, and given the fact that
> > > the G4 iBook doesn't have external L3 cache (or does it), which one do
> > > you believe Apple did use in the iBook ?
> >
> > Hmm. report as 7455 by cpuinfo.
>
> Yeah, i know, my 7447 also reports as a 7457, and i know that it is a
> 7447, because it is written on the chip among other reasons.
Well, the 744x chips are easy to tell from the 745x, because the former
have a smaller packages than the latter. The L3 cache interface takes
of the order of 100 pins you know....
>
> > But that's true there's no L3 cache on this one.
>
> Only difference trully. I think it would be nicer to report it as
> 7445/7457 or something such.
A real geek would write this 74[45]7:-) Now is there a way to determine
this by attempting to read (or modify) l3cr?
Regards,
Gabriel
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