I've used crystialDisk mark on laptop and desktop, both with Win 7 on them.
Added - It is listed as a download for windows 7http://www.windows7download.com/win7-crystaldiskmark/jhjtgqiu.html
HD tune PRO ver 4 is a trial ver, yes but works for a initial checkout. There is a non-Pro ver that is a free version. It is ver 2.x and works under upto vista (Do not know if it is 32 bit/64 bit or works on both). Generally if the software works under vista, it will also work under Win 7.