Nokia N8 cpu underclocked at 192 MHz not 680 MHz!!!

Many mobile phone reviews that listed the specification of the Nokia n8 mobile phone mentioned that the Nokia n8 CPU was clocked to 680 Mhz of pure processing power.Well there is a new handy application that is called X-plore and shows your devices serial number,total memory,free memory and cpu speed.I installed the app and then launched it and I found some interesting info for my device.I saw that the CPU clock speed was set to 192 MHz and Nokia did say it was clocked to 680 MHz. Is that right?