Blastman: why even compare Duron and Celeron Mhz vs. Mhz -wize, I think price vs. price would be more realistic. Looking the price list of the nearest local computer shop I see that Cel800 is just as expensive as Duron 900 and Cel850 should go against T-bird 900. Also, Duron 800 costs less than Cel633 and you can get Duron850 about the price of Cel667.How big would be performance delta between those processors, what do you think? Also, you can castrate Celeron's performance putting it into crappy mobo, too (just like Duron), but what's that has to do processor's performance? BTW, on hi-res gaming where v-card will be limiting factor, all processors that can push v-card to it's fill-rate limit, perform about the same: then Duron's, Celeron's and P4's are all about same...