WD Caviar Green and Black are two types of western digital hard drives and both have certain advantages over each other. One of the things to consider if you would be going for any of these two is their performance. In terms of performance, WD Caviar Black should be your preferred hard drive because it has higher performance compared to WD Caviar Green.
However, one of the downsides of WD Caviar Black is that it consumes more energy, and also noisy. In contrast, WD Caviar Green is a better choice if you want a hard drive that makes less noise. In addition, WD Caviar Green does not consume more power like the Black.
In terms of speed, WD Caviar Green has a speed of 5400-rpm, whereas WD Caviar Black has up to 7200-rpm. Another thing to consider is their price, and this also doubles as one of their differences. WD Caviar Black is quite expensive compared to WD Caviar Green.