Friday 22 June 2018

hard drive - Apart from speed, how do SSDs compare to HDDs?


I've heard that apart from straight-up speed, SSDs greatly outperform HDDs in power consumption and heat generation. How much greater, on average, is an SSD than an HDD in:



  1. Power consumption.

  2. Heat generation.


Is there a very significant difference?



Answer



There is a considerable difference in power consumption, I've seen different data on that, but its ~0.6W as opposed to ~2.2W.


One thing to keep in mind- because there is no queuing delay, the processor utilization will go up, and that will create a lot more heat. A buddy of mine says that there are times where his laptop actually gets hotter after doing that upgrade for that reason. I'm sure that only happens when he's really reading/writing a ton of data!


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