Part 1 of pulling-apart my laptop is here.
In this part I'm showing pictures of the video card before and after removal.
Here is the exposed shot again:
At the top left you can see two sets of cooling fins with a copper pipe running diagonally to a daughter board. This board is my ATI Mobility Radeon 9700 M10 with 64Mb RAM (woohoo!). Other options are the Mobility 9700 with 128Mb RAM, and the Mobility 9800. (I wish I had the 9800...)
Below the heat sinks on the far left is a fan. One heat sink transfers heat from the video card (furtherest back) via the copper pipe you can see. The other heat sink transfers heat from the CPU via a copper pipe that runs under the video card. You can just see it running parallel to the back edge.
Follow the Dell instructions for removing the video card (and my disclaimer) in Post 1. It looks like this:
You can see the copper transfer pipe, and the cooling fins. Copper is excellent at transferring heat! You'll see why in Part 3.
The next photo shows what the system board looks like without the video card!
You can now clearly see the CPU heat transfer pipe, as well as a third copper pipe under the video card. The third pipe looks like its attached to the northbridge heat sink. This third pipe runs diagonally to the CPU cooler, and ends in a small aluminium heat transfer block under the black plastic cover you can see.
The video card slot is visible next the the fan. Kudos to Dell and other laptop manufacturers for making laptops almost as modular as desktops, however replacement video cards are hundreds of dollars! I can't find any cheap second hand parts. If you can, let me know!