well, the duron does have 64K on L2 cache but it also has 128K of L1 cache, just like its big brother, the Athlon. that makes for a total of 192K of on-chip cache. that's pretty good, considering that celerons were languishing with on-board caches. big on-chip cache is good because it runs at CPU bus speed. the durons physically are very hardy and can easily be overclocked to much higher speeds (common declaration is duron 600 at 950). true, an athlon 950 beats a duron 950 any day of the week, but for bang for your buck and overclocker coolness, the durons are fun to play with =) btw, just to let you know how rock-hard stable durons are: i currently have a non-overclocked duron 600. with two case fans, a hard drive fan, and a superorb, system temp is 26 deg C and cpu temp is 29 deg C. considering that guys talk about 50 deg C as the fail-line, that is pretty darn good!