Well, it's rated for T-birds up to 1.1 Gig , but personally I would want a little something
more if OC'ing a T-bird. The Cooler Masters are OK for Durons up to about 950Mhz or so, but not much more.(my Cooler Master/Duron 600 system will not run totally stable at 950 unless I use a small 8" table fan blowing into my case, at the processor)