Pretty much what the title says, my radiator gets pretty hot and was wondering if that is normal. I only have one fan placed on it which is pushing air through the radiator. The reason for this is because I don't have enough room for a second fan in my case.
Yea I figured that as well, better the radiator then the cpu, but then I wondered if there was a limit to how much heat the radiator can with stand. And I can technically do a push/pull setup on my antec h20 620 but the problem is the case. I'm unable to screw the bottom mounting bolts because the fan that is pulling the air isn't lining up, so basically the fan isn't fully attach to the radiator making it hang off from the bottom.
A typical CPU liquid cooler is made out of aluminum so it can withstand quite a bit of heat. The efficiency of the radiator depends on how large it is, the fans, the fan speed and the room temperature (thus the temp of the air moving through the radiator).
If your CPU temps are fine then there isn't anything to worry about.