http://www.xbitlabs.com/articles/graphics/display/intel-hd-graphics-4000-2500.html
I still need time to read through this, but the max GPU frequency appears to be around 1.35GHz. Looks like there's a lot of info in there on the HD4000.
I still need time to read through this, but the max GPU frequency appears to be around 1.35GHz. Looks like there's a lot of info in there on the HD4000.