[TriLUG] Shopping for new laptop...

[Brian McCullough]

On Wed, Jul 11, 2007 at 06:19:41PM -0700, Joseph Mack NA3T wrote:
> On Wed, 11 Jul 2007, Andrew C. Oliver wrote:
> 
> >> 1) I'd prefer going AMD;  is there a problem or caveat if I go with one
> >> of their 64-bit X2 chips?
> 
> most (all?) dual core processors don't have any more 
> bandwidth to memory than the single cores. This means that 
> if one core is running an app acessing memory then the other 
> core has to run out of cache, if it's going to run at all. 
> But then dual core doesn't cost a whole lot more, even if 
> you can't use it all the time.

I was under the impression that AMD had a rather different memory
architecture from Intel, substantially more efficient, including (
perhaps ) multiple paths to memory. ( dual-port memory? )


( This from vague memories of research and seminars. )


Brian