Just curious, did you check the usable memory amount?
No matter if you install graphic card the mobo is still addressing memory for integrated gpu.
My H55M/USB3 suffers this "well known" problem. The hardware resverved amount of the ram is 173MB and I am using 2 x 2GB sticks.
There´s no way to disable the integrated gpu.
Could you please check this thing when you are doing your Sandy Bridge reviews?
Thx in advance.
Here is the link to the Win 7 Resourse Monitor image:
http://i746.photobucket.com/albums/x...Untitled-1.png