Where is the memory conroller heatsink located on early 2005 power mac

So I will throw an answer here in case someone comes across this with a similar issue.

I should've wrote this when it was still fresh in my mind. However, the memory controller chip is on the back side of the logic board. YAY! You have to completely disassemble the Powermac and remove the logic board. I think there was either a separate fan for the memory controller, or one of the main case fans had a vent that went to the back.

The heatsink is held on by black plastic push pins that will break very easily. I don''t remember if I had modified new pushpins from Amazon, or if I had gone the nylon bolt route. If you get the push pins off of Amazon or a similar place, you have to use a razor to trim the wings to a similar size that Apple has in there and it should work. Good luck!