[Sunhelp] E4500 memory question

[Gregory Leblanc]

> -----Original Message-----
> From: Brian Canada [mailto:Brian.Canada at dalsemi.com]
> 
> This problem has mainly affected the 400mhz 8mb cache chips.  
> Sun is addressing the problem quite aggressively and has 
> several patches that go out and "scrub" the cache.  They are 
> also looking at mirroring the cache in the next line of Sparc chips.  

Mirroring cache?  Is that only for redundancy, or what?  Won't that cause
some serious heat and cost problems?  Cache ram is NOT cheap, especially if
you're talking 16MB of it, running at, what, 750MHz?  I've seen a lot of
different things, and I seem to recall some CPUs having heat problems with
their off-die cache being too hot, but I'll have to check into that a bit
more, unless somebody know more about it here.  Later,
	Greg