It really depends on the drives, unfortunately there aren't very many sites that focus on temperatures and power draw over raw performance.
Silent PC Review has an excellent roundup, but it's horribly out of date.
The very general rule of thumb is that the faster the drive, the hotter it runs, and the more power it draws (Excluding SSDs).
Any reason you can't just get an external drive and save yourself the hassle of cloning or reinstalling your machine?
=====
I use 5400 RPM drives in one of my machines and have never had any noticable issues with performance.