corrosion ? there sould be none i am using right now a ok all in one thing i got for $30 COOLERMASTER aquagate for my amd fx-60 overclock to 3.0ghz and it has a alum rad thats only 80mm and that set up has been running for almost a year now with no problems and the cpu block is copper with poly top. i ripped that thing apart so many times and said what the heck thats why i want to build this new set up that will also cool my video cards. so no corrosion with the alum rad which i put a hole in and had to fix i could take some pic of this thing it would make you think is makeshift. im using the coolent they gave also with some antifreeze because i lost alot when i put the hole in rad. so if you want some pics ask me if not im not wasting my time thanks for every thing and sorry for the spelling