In addition to tearing apart an Xbox One, the iFixit folks also recently pried apart Sony's latest console, the PlayStation 4. One of the immediately noticeable differences between the two consoles is the accessibility of the primary storage. The Xbox One requires a considerable amount of disassembly to pull out and replace the hard disk drive, and iFixit calls it a warranty-voiding procedure. Sony, on the other hand, makes pulling out the 2.5-inch 5400 rpm SATA II drive relatively simple—it requires only a single Philips-head screwdriver.
However, aside from the user-replaceable HDD, getting into the system's guts is a little harder than with the Xbox One. The One uses standard T9 Torx screws, while the PS4 uses Torx Security screws, which won't seat a screwdriver with a regular Torx bit.
Once inside the cover, the iFixit crew first removed the system's large internal power supply. Many people consider this design decision to be a serious point in Sony's favor since it means the PS4 doesn't have a large external power brick like the Xbox One. However, thermal engineering is a deeply complex topic, and there are design trade-offs to be made by putting a hot component like the PSU inside of the case. Here, after removing the power supply, the PS4 shows its custom-designed ducted fan and tall heatsink assembly. Unlike the One's relatively traditional heatsink/fan combo, the PS4 more tightly controls airflow to handle the system's thermal load.