Yes I think you should be able to use the AMD FirePro 7000 Server Graphics with the ASUS KGPE-D16.
If you want more info on them here are links to both:
Graphics: http://products.amd.com/pages/WorkstationGraphicCardDetail.aspx?id=56&f1=&f2=&f3=&f4=&f5=&f6=&f7=&f8=&f9=&f10=&f11=&f12=&f13=&f14=&f15=&
Mobo: http://www.newegg.com/Product/Product.aspx?Item=N82E16813131643
my information in motherboard (Expansion Slots) is so bad when i read abut ASUS KGPE-D16 I have realized in the Expansion Slots in the motherboard and when i read abut AMD FirePro 7000 saw these word PCIe 3.0 and i dont know what i must do