Logicboards sometimes go through a few revisions throughout production. The 475 wasn't manufactured for long but there is definitely more than one variation as some have the CUDA switch and some don't. Some boards are yellow/brown and some are green (perhaps depending on where they were manufactured). A lot of Apple logic boards were made in Ireland but they had factories making them in other places, possibly Singapore I think.
Logicboards sometimes go through a few revisions throughout production. The 475 wasn't manufactured for long but there is definitely more than one variation as some have the CUDA switch and some don't. Some boards are yellow/brown and some are green (perhaps depending on where they were manufactured). A lot of Apple logic boards were made in Ireland but they had factories making them in other places, possibly Singapore I think.