SSD power usage discrepancy

[etherealfocus]

So Samsung advertises its SSD 8xx series drives as having insanely low power consumption.

http://www.newegg.com/Product/Produc...82E16820147163
http://www.newegg.com/Product/Produc...82E16820147188

But when we look at the power use results from Anandtech, they're literally two orders of magnitude or more higher. What gives? I don't see how there can be that much difference between Samsung's measurements and AT's.

http://www.anandtech.com/show/6337/samsung-ssd-840-250gb-review/12

 

[Hellhammer]

Samsung's numbers are with DIPM enabled, whereas our tests have DIPM disabled.

 

[etherealfocus]

Wow, DIPM makes that much difference?! Why do you test with it disabled? Is there a major performance hit?

Seems like a huge benefit especially for laptops. I'd be happy to sacrifice a chunk of my SSD performance if it'll add significantly to battery life.

A quick article showing the actual battery life benefit of enabling DIPM (and any performance cost or other downsides) would be awesome, btw. Think you guys might be able to do that?

 

[etherealfocus]

Also, how would we expect enabling DIPM to affect relative power usage? If it cuts everything down to a few hundredths of a watt, I'd imagine relative power numbers would be essentially meaningless.

 

[VirtualLarry]

A quick article showing the actual battery life benefit of enabling DIPM (and any performance cost or other downsides) would be awesome, btw. Think you guys might be able to do that?

I would be interested in an article like this as well.