ledow
Member
Depends on the design and technology used, but generally, having RAM "turned on" is as costly whether you are using it or not because of the refresh cycles - every so-many milli/nanoseconds, the RAM has to be updated whether it changed or not. A lot of RAM these days even tells you and lets you adjust such settings from the BIOS or overclocking utilities.tazg said:I thought memory only used power when it's filled... if you still only use 128mb of it wouldn't it be the same?
and does anyone know how much power sd cards or onboard storage would use when swapping compared to ram?
Basically, unless the Pandora's chipset has some fancy power-saving technology, you're still pumping some high-frequency signals through the RAM all the time. High-frequency = high power, because you have to take energy to turn it OFF and ON each time (it sounds counter-intuitive, but it's accurate from a physics point of view - any change takes energy to perform). The larger the change (e.g. high voltage, high current) and the higher the frequency, the more energy you use to do it.
You'd probably find that SD on swap would use less power but I wouldn't hold myself to that, and the speed of access would be drastically reduced.
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