Internet Explorer 8 Performance Whitepaper has been published recently in the Microsoft Download Center . This document contains tips & tricks for how to optimize browser performance for Internet Explorer 8.
Some of these tips are very useful but not well known. For example, increasing the maximum number of connections Internet Explorer 8 can make with a server at any given time can increase the performance of your browsing and downloading experience. The How do I configure Internet Explorer to download more than two files at one time? Kb article tells you how to increase the connection limits of Internet Explorer 8. You can follow the steps given manually or run the Fix it wizard to do it automatically for you.