I was reading this question which references L2 cache hits as taking about 10ns: Are networks now faster than disks?
However I distinctly remember there being 10ns cache ICs for the 486 generation. A google search seems to back this up ( http://vogons.zetafleet.com/viewtopic.php?p=262795 ). So my question is, has L2 cache just stopped getting faster? Is this a fundamental limit on memory speed that's already been reached? Or are their other issues at play?