For $30 I can get an used H61 board, i3-2100 and 4GB DDR3 RAM. That is going to be much faster than both Raspberry and Odroid.
The ARM boards make sense only if you have power and size restrictions.
The ARM boards make sense only if you have power and size restrictions.
Power and Size restriction can be a bigger deal than you've made it sound, though. I can fit ten Pis in a carry-on without concern if needed, and I have needed to do so in the past. For noise reduction, fanless is better than muffling a fan, though one does need to make sure the heat sink is big enough.
This is great. If you absolutely do not care about power efficiency, physical size, noise or reliability.
They aren't even comparable. And even if you claim to care about raw performance, I'd like to see how well that i3 does in a direct benchmark. It might not turn out the way you think it is.