The average read/write operating power for the 4TB version is 5.0 W, and the average idle power is 2.5 W. The 2TB and 3TB capacities have a startup power of 2.5 W, average read/write operating power of 8.0 W, and 5.4 W average idle power. The 500GB and 1TB versions have an average read/write operating power of 5.3 W, and 4.6 W average idle power. Now, for the 3.5' BarraCuda drives: Capacities 500GB, 1TB, and 4TB have an average startup power of 2.0 A. The 3, 4, and 5 TB capacities have an average startup current of 1.2 A, an average read/write power of 1.9/2.1 W, and an average idle power of 1.1 W. The 2TB capacity has an average read/write power of 1.7/1.8 W and an average idle power 0.5 W. The average read/write power for the 500GB and 1TB capacities is 1.6/1.7 W, and an average idle power of 0.45 W. Using a couple of our models in various storage capacities for example, just to get a better picture of what this looks like:įor our 2.5' BarraCuda drives: capacities 500GB, 1TB, and 2TB, startup current specs out at 1.0 A.
This is because power management is paramount in laptop computers, so 2.5' laptop drives are going to prioritize power conservation over raw performance capabilities. You're correct, the performance will be different in a 2.5' hard drive than you'd see in a 3.5' counterpart, even with otherwise similar specs as far as things like RPM go.
