The Xbox 360 GPU

The Xbox 360 GPU

While Microsoft's focus on the CPU was efficiency, with the Xbox 360's GPU, it pulled out all the stops. Designed by ATI, Microsoft controls the IP of the GPU; meaning, Microsoft can manufacture and do what it wishes with Xenos (although we're assuming that they can't stick it on graphics cards and start selling it to the public).
The GPU also acts as a North Bridge in the system, but we'll get to that role a little later. Like the Xbox 360 CPU, we've talked about the GPU in great detail in the past, but we'll briefly go over the highlights here.

Disassembling the Internals of the Xbox 360

Disassembling the Internals of the Xbox 360

To continue further, you will need to first remove the DVD drive. Simply hold the drive and lift up. You will notice that the Xbox 360's DVD drive uses a Serial ATA interface which keeps things very tidy compared to the original Xbox. At this point, remove both the power supply cable and Serial ATA cable from the DVD drive and then from the motherboard.