Just purchased one march 1st or so with a 1.2 gig 200 bus 512 true pc133 7.5 micron 2 bad IBM death star 75 gpx . Short story have back up drive is running 9x133 1200 all had to do was manully set the multiplier in bios to 9x100 reboot then shutdown system and set the jumper to 133 works great and have fash the turkoc bios for the better memory setting everything fine an I just an exception to the rule ????