PC Perspective puts the new Xbox360 Slim through its paces, and it comes out surprisingly robust. Among other things, the unit's got a better cooling system, and runs quieter on the single-chip CPU/GPU solution provided by AMD.

On, and it's got a built-in 802.11n wireless solution... cunningly attached to a plain old internal USB port. Bizarre.

I'm not sure I will buy one anytime soon, but...

Now before we show you what is inside the NEW Xbox 360 "Slim" console I thought it pertinent to show you what it was replacing by taking our previous generation model and revealing the setup it holds.
After removing the chassis from the original Xbox we find a somewhat busy PCB along with a large heatsink assembly and a pair of smaller, noisy fans used to draw heat and air out of the system.
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This is the only fan and heatsink in use on the new Xbox 360 S and because it is larger it can rotate more slowly and thus generates less noise than the previous models pair of fans. I have included a video of the Xbox 360 S versus Xbox 360 noise properties below - be sure to check it out!

Quite an enlightening article, full of pictorial goodness.