Seagate
Hitachi
General opinion is 5200rpm disks consume less power compared to 7200rpm; someone even suggested that Data centers run 5400rpm just because it takes less power.
Hitachi Travelstar-5K500.B
Seagate spec
I chose Hitachi Travelstar-5K500.B hard drive for laptop, just to keep the load on battery low.
Hitachi Travelstar-5K500.B rated for low power
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