This is the latest motherboard of the latest PS3 Slim. And thanks to those two silver squares in the middle, it's less power-hungry and more profitable (err, potentially profitable) than ever before.
The silver square on the left is the 45nm Cell processor—it began shipping with the PS3 Slim redesign. But the silver square on the right? That's the new RSX GPU, which is now manufactured at the 45nm scale as well.