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With the top panel removed, we focus our attention towards the power supply unit.

Unlike the 2013 model, which topped out at 165 W, this PSU dishes out 289 W of power (1.5 A @ 4.8 V +23.5 A @ 12 V).

According to the official technical specifications, the PS4 Pro pulls 310 W of power total. The balance is probably spent in transforming power from AC to DC.

And now for the million dollar question: Why is this console so much bigger than the original?

For comparison purposes, we lined up the PSU from the PS4 Pro (left) and the original PS4 (right). While there's only an 74.2 g difference between the two units, the requisite heat pipe and fan add a bit more bulk to the Pro to wick away excess heat generated by the additional GPU.

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