1.7 Ghz? I wouldn't say common but I could be wrong.
However, look at what most people had to do in that day to get even that nice of an overclock. Use screaming 60mm fans, voltage mods, insane numbers of case fans, and for what, a 300 Mhz overclock.
Today, you can go out and buy a Tbred B XP1700+ for $42, a $9 HSF, one case fan, no voltage mod and overclock from 2.1 Ghz to 2.4 Ghz, or 600 Mhz to 900 Mhz overclock!
<b>56K, slow and steady does not win the race on internet!</b>