Heatsink to the left of the socket is labeleld Northbridge heatsink, the heatsink above the socket is labeled MOS heatsink. Are the VRMs the row of rectangular chips just below that with nothing on them?
http://www.gigabyte.com/products/product-page.aspx?pid=3901#ov
http://www.gigabyte.com/products/product-page.aspx?pid=3901#ov