The PlayStation 4 and Xbox One are both equipped with a 2.5-inch 500GB hard drive that spins at 5,400 revolutions per minute. Only the PlayStation 4's hard drive, however, can be replaced or upgraded.

Have you tried the PS4 shuffle yet? If you've had one of Sony's marvels since launch, you'll be well used to it - settling into the rhythm of constantly deleting (then, later, re-downloading) games ...