Re: AMD Phenom L3 cache bug explained

On Thu, 06 Dec 2007 03:51:42 -0500, Yousuf Khan <bbbl67@[EMAIL PROTECTED]
>
wrote:


>Also I saw a roadmap today from AMD which talks about a "Large L3 cache" 
>coming in 2008. That may be Z-RAM. Separately, there was even a rumour 
>that any Z-RAM cache could be upto 100MB!!!
>
>Check page 30 of this PDF, where the roadmap stuff starts:
>http://www.cisl.ucar.edu/dir/CAS2K7/Presentations/torricelli.pdf

At AMD's last analyst day meeting there was no mention of Z-Ram that I
can recall. That pdf is old.

They claimed the first AMD64 K8s were capable of 8MB L2 caches but they
never did more then 1MB per core, probably because of yields, die size,
and the performance gains just weren't noticeable enough, their
architecture just doesn't seem to benefit much from larger caches, even
the new chips with L3 cache don't appear to be making any big impact.

Ed