Hello, I have recently run into a strange problem with GPU-Z and HD 4850 with Windows Vista. It seems that on the sensors tab the Memory usage tab is missing. I have tested on the same system with Win 7 and there the Memory usage tab is shown. I have to do a log of memory usage for an app on Vista and i could use some help. I tried fresh install same thing. I tried other system with vista and same issue. Tries on a different system with vista and nvidia gpu and memory shows. Edit: as I found out from an older thread memory usage monitoring requires WDDM 1.1 (introduced with W7) does anyone know an app similar to gpu-z that can create a log of memory usage and gpu load would much apreciate it.