What is that chip in older graphics cards ??

[roasted]

I don't know how to search this, but I was curious about what does the little chip with green pcb do in older gpus such as the 8800gtx, the one pointed in this image:

I thought, maybe I can get a quick response here, as there are plenty of people that know a lot about GPUs here. Thanks in advance.

 

[captaincharisma]

it could be the sound chip if the card has a HDMI port

 

[TJ Hooker]

Apparently Nvidia had to split the G80 GPU (used in the 8800 GTX) into two separate chips because it was getting too big and causing yield issues. So that chip is a separate I/O unit responsible for all the display output functionality.

https://en.wikipedia.org/wiki/GeForce_8_series#8800_GTX_/_8800_Ultra