cpu for mobiles without fan, how it's possible?
 

how cool cpu of our N900 (and others mobile devices like it) without a fan?
:confused:

Re: cpu for mobiles without fan, how it's possible?
 

Very cool compared to desktop/laptop ones... That's what makes ARM superior in the mobile world.

Re: cpu for mobiles without fan, how it's possible?
 

Heat Sink ?

Re: cpu for mobiles without fan, how it's possible?
 

the freezer (portable one)

Re: cpu for mobiles without fan, how it's possible?
 

They use less energy when running, so they don't get as hot, if they don't get hot, they don't need active cooling.

Re: cpu for mobiles without fan, how it's possible?
 

???
inside N900?? really?

Re: cpu for mobiles without fan, how it's possible?
 

i just checked the arm cortex a15 processors. We do need one of these!

Re: cpu for mobiles without fan, how it's possible?
 

water cooling perhaps?

Re: cpu for mobiles without fan, how it's possible?
 

what about powerful GPUs with passive cooling?

it is all about the area, and area of heatsinks outer core when being more specific. and there are several limiting factors such as air gap (heatsink flanges cannot be microscopic because certain air gap must be reached in order to archieve the best possible heat transfer etc etc etc)

and it of course depends fully on heat dispatch of a processor. more mobile processor = less heat dispatch.

Re: cpu for mobiles without fan, how it's possible?
 

Also ARM is a very low power CPU (electrical power not processing power), one of the the most efficient processors around IIRC
ARM processors are low voltage, ultra low voltage etc., all designed to keep power and therefore heat down.

Think of the ARM CPU as an energy saving lightbulb, its a bit like a 15W bulb that's equivalent to a standard 100W lightbulb.