I don't think so.....just look at the specs !
for a cpu coin, why not...
I remember a few months ago someone was talking about making a custom rig using a bunch of old PS3 cell cpu's. Each cpu uses something like 75w which is quite efficient for the processing power.
I used to reflow ps3's all the time. I can get broken ps3's for like $20-$30 so if someone came up with an open sourced solution I could definitively make use of it.
Its a great idea but there is no way to know if it is economical without trying. lol
I think you could make one hell of a Primecoin miner out of a botched together Ps3 miner tho. lol