MediaWiki running real slow

[Kolczasty]

Greetings, everyone.

My Xampp for Windows is working fine. The problem is that MediaWiki (whatever the version, let's talk about the fresh installation of the newest one) runs real slow. A suggested solution is to install a PHP Accelerator ("enable cache"?), but I have no idea how to do this. All those suggested in MediaWiki cache help work for Linux only.

Please help.