I purchased my R7950 in January 2013. This must be the locked version, because MSI Afterburner won't let me adjust the voltage. The helpdesk of XFX didn't say anything about locked/unlocked versions. Thanks for clearing this up, shankly1985 :)
The vrm temperature of my XFX 7950 card doesn't show up in HWiNFO64. As far as I can see core temp is accurate and changing according to load.
Enclosed a zip file with screenshots of gpu-z sensors and hwinfo64 sensors. Also added a debug log.
Maybe you can help me out...