Originally Posted by Dukefrukem
ask Hunter, he'll know
*squint* That's... odd.
Quick, dirty and Barney-level:
Northbridge connects the really fast stuff to your CPU. Southbridge connects the really slow stuff to your northbridge.
usually won't have any sort of cooling. It'll be a black, probably square(ish) chip on the board that's bigger that just most other stuff directly on your motherboard. Your hard drive, your modem/ethernet card, USB devices, keyboard, mouse and just about everything else connect through that little thing to the northbridge
Assuming you plug your monitor into the back of your computer a bit away from the mouse and keyboard plugs, the northbridge
will be the thing that's not the CPU, but has the next-biggest heat sink on it. It could possibly even have a little fan, but that's an extreme solution most people don't need. There's not too much that needs all the speed the northbridge offers, but what does gets a high priority. That's your RAM, those long, low cards, probably close to the CPU, also known as your memory. It's also used by AGP video cards if you have one of those. Finally, it takes everything the southbridge sends its way and winds it somewhere into the traffic headed to the CPU.
Information leaves the CPU the same way it came in. CPU to northbridge, then out to the southbridge (or straight to fast stuff), and from there to wherever it needs to go.