CPUZ showing wrong VRAM?

CPUZ is shoing Memory Size as 4095MBytes
This is an r9 390.

Shows 8gb everywhere else, including games that show your occupied Vram, so i know its there.

Is this just a quirk of cpuz or?
 
I never run both at the same time for exactly this reason. I've noticed similar anomalies. Best to use MSI Afterburner and have those options checked in monitoring if you want to see where are you are at in CPU and GPU usage at the same time.