Yes this doesn't mean that the new os 2008 will even run at 400 mhz on nokia n810 or nokia n800 it may still very well run around 300-333mhz. But like someone already said it may boost up higher too 400mhz when needed for certain applications such as the video player.

Well... it gave me 388.54 BogoMIPS...

If I could overclock it to 500 or 600 Mhz and it would just 2 hours, then it would be for me still a nice device.

388/320 = 1.2125
400/330 = 1.2121

... that's nice

I think that is enough proof that OS2008 enables 400MHz CPU clock speed on N800 device...

Eggzactly!

The clock can be dynamically managed by the OS/firm/software in order to affect battery performance.

It appears that OS2007 was a quick and dirty approach to increased battery life VS. performance until user behavior and expectations were more accurately gaged. Hell, they may not have even coded the dynamics opting instead to set it and forget it until a latter date.

OS2008 is an improvement and subsequent revisions to it may improve the user experience even more.

No doubt the specs for the N800 will report 400 MHz once it is shipped with the new OS/firm/software.

Yeeesh!

In any event it doesn't sound like processor speed is a viable reason to upgrade from the N800 to the N810.

However, knowing how some of us forum knuckleheads are, this performance debate will go on for years.

TA-t3 you just gave me a great idea. What about if one were to overclock the proc to say... 1 GHz? (connected to the wall of course). I wonder what heat dissipation would be like? Man... ARM has a reputation for being able to run fast on lower clock speeds (obviously). I can browse the web at roughly the same speed on my tablet (333 MHz) and my Laptop (Dual Core 2.6 GHz). Imagine ARM running at 1 or even 2GHz....

Oh and when I say ARM runs fast, I mean more efficiently

I once overclocked a X-Scale proc in a Netbook Pro HPC from 400 mhz to 800mhz completely stable. arm processor can easily be clocked to higher speeds, but at the expense of battery life. Many of the last generation of Windows CE PDAs like the Axim were clocked at ~600 mhz.

How did you perform the overclock? Kernel Modification? BIOS settings? (doubt it) or perhaps software program over clocking on the fly?

I got Axim x51v. Stock it is 624Mhz. Highest stable overclock was 1014Mhz. For Windows Mobile there are at least 4 programs allowing you to adjust CPU speed. For OMAP too. Heat is not a problem. Even at Ghz, after 10 minutes of 100% usage the CPU is barely warmer. Most of the heat comes from the battery. Under normal usage the CPU drains between 200 and 350mA, and at 1Ghz it jumps to 600-700mA. Another interesting topic is that it is nothing like a desktop CPU. On the desktop you may got a frequency where thePC boots, but the CPU is unstable. And here it works or not. Either switches to the freq and works flawlesly or the machine halts and you need to restart.

So, what about overclocking the N800? I came across some info about WinMob tool for overclockng OMAP, it had sample code, the actual switching is done in assembly. When I have time I would further investigate. 500Mhz would be awesome.

OMAP are known to overclock realy miserably. 850, which is found on most current HTC phones goes up to 250-260 from 200... In performance it's comparable with Intel PXA270@~416.