WD Se Internals
The WD Se comes in a 3.5" form factor and has a SATA 6Gb/s connection. The PCB is fastened with multiple screws on the bottom of the drive. The drive has five platters, with 800GB per platter, on the 4TB model we are testing.
When we remove the PCB, we observe the thermal padding in the interior of the HDD. This allows PCB components to shed heat into the interior of the drive.
The Samsung cache chip holds 64 MB of cache buffer, and the Marvell 88i9346-TFJ2 controller sets atop the other components.