I have an Asetek 550LC mounted on a Phenom II 1100T since the first day an its still performing great, but... It has a type of tubes that I never seem since the first AIOs came to the market. I have a Cooler Master one with the same tipe of tubes also on a AM3 computer from the same era. I had to repair the pum because the previous owner mounted the radiator on the botton of the case so the pump was working with air inside. And another 550LC on a Socket 2011 V2, but this one is newer and uses the common tubes and a smaller pump.
I Iike the AIO cooling systems a lot but they have some rules to follow, not for every one.