WIth Conky, I'm refreshing it only every 1 second. So you may be right. But at the same time, I can see that at every 1 second, it's running at 600mhz every time. And I cannot assume it's doing any good by constantly going down to 500mhz or less than back to 600mhz every 1 second. That would not even make sense. Anyways, maybe it's not so easy overclocking the N900 if other chips also rely on the same FSB and/or if the multiplier on the CPU cannot be changed. If that's the case, I guess it's not possible even if the ARM cpu can handle faster clock.