As the topic says, which is better? which is more reliable?
I have been using afterburner, and LOVE the fan control utility, and cherish it just for that. But is AMD overdrive any better? Mind you, I have zero experience with it, and that is why I'm asking. Instead of going off the map on my system and trying it, I'd rather ask first.
Afterburner gives you more options, but you'll need to enable "unofficial" overclocking support by manually modifying a config file. You'll need to search for exactly what to do, you have to type in some text exactly that says you understand the risks, blah blah blah. This is probably what the page you linked to was talking about.