Looks like it. 350W PSU or thereabouts, with a system TDP of 250W.
Assuming the rumoured 4.2tf/2.1GHz Jaguar and nothing else in the box to use any more power I think that a touch high.
OG PS3 had 380W but used 210W max and quickly lowered.
OG PS4 had 250W and used 150W max.
So for me with the above specs I'd say no more than 300W PSU with max 170W power consumption.