In the German Computer magazine c't 8/97 there's an article saying that
the Pentium II's Level-2 cache caches only up to 512MB. The level-1
cache is o.k. for up to 4GB. The article (in German) and some
performance numbers (under WinNT) can be found at:
http://www.ix.de/ct/art_ab97/9708020/
So much for x86 machines as servers.
-Harald