I've tried using a couple different programs and gadgets in Windows 7 Ultimate but my Athlon II x2 temp doesn't register. A couple days ago with XP I had no issues. Any ideas?
Might not be your cup of tea, but have you looked at CPUID 2010? when minimized it will give you core temps in a widget form. Not exactly "pretty" looking, but works with most (if not all) CPU types.