tccd/tcc5 are almost the best. bh-5 is better for gaming, with the lower latencies..comparable 2-2-2-5 265mhz to 2.5-4-3-6 300mhz on tccd. But becasue of it's low volts, Laz, i want some myself...my asus board would love it, with max of 3.0v
first up is BH-5 525mhz, fx57 @ 3400mhz http://service.futuremark.com/compare?2k3=4210637
second up is tccd 620mhz, fx57 @ 3400mhz. http://service.futuremark.com/compare?2k3=4210234
check the individual game test scores to see the real difference, other than the bh-5 scoring 100 points more, and getting more frames.
not my scores, btw.