The figures below come from a powerpoint presentation written by Microsoft to describe IE8, due out in December.
Memory Requirements
- Windows Vista – 512MB
- Windows XP – 64MB
- Windows Server 2008 – 512MB
- Windows Server 2003 – 64MB x86; 128MB x64
Why do the current MS OS’s require so much more memory to run IE8? 
Yep.. no wonder we’re still on Win XP here;
WTF requires so much more memory in Vista?
Linux is looking better N better!
(notice I didnt say Mac OS X? (see below))
-tim (posted from a PowerMac G5 using 538Mb out of
3.5Gb of ram running Mac OS X 10.4.11)