you need a lot of free Ram to use ether one, if you don't have a lot of ram it will skip both of them all.
i have them both.
anyways MajorGeeks.com as a outdate version: 1.9 the newer version is: 2.7.1
Latest release: 2.7.1
November 9th, 2005. CHANGELOG
http://www.fraps.com/download.php
this one works with Windows 2000, XP, 2003 and x64 Editions
the one Steve shows work older and newer windows system, but unlike Windows Xp/2000/ system they been updated and changes made. so you maybe better off with the older version if you system is older OS.
both are still good to use.