So today arrived my shiny powercolor AMD 7850. My old 4850 was struggling to play anything current on my 1200p screen due to only having 512Mb VRAM, and the girl had seen better days. She had done me proud since i bought her on launch day, and enjoyed running passively with my Accelero S1 heatsink on her but she's been let free to roam the fields with all the other GPU's of old. So everything went fine with the installation of the 7850, installed the latest drivers and its a beast in games compared to what i had before. But one feature doesnt appear to be working and that is the zerocore technology that is supposed to power down the GPU to almost nothing when the display is off. Supposedly it saves around 8-12w. Since i often leave my PC running to download or encode a blu-ray overnight i thought this was a nice touch. At idle desktop my system is showing as using between 66-70w according to my power meter at the wall, which is already a nice drop from the 80-85w i was using before. But when i turn the screen off it doesnt drop at all. After 15 minutes of idling with the screen off my power meter was still showing 66-70w. Shouldnt it have dropped to at least a few watts? As i said i have the latest drivers (12.3) and a fully updated Win7 x64. Rest of the hardware includes 2500k, ASUS m-ATX board, 8GB RAM and 1 HDD. My display is connected via DVI. Couldnt find anything in CCC to turn on or off zerocore, from what i read it was an entirely passive feature and should work with any monitor, so not sure why mine isnt working. How long does it take the screen to be off for zerocore to kick in?