For AMD to calculate performance values you have; ROPs * clock speed for the pixel fill rate, texture fill rate is physical shaders (TMU) *clock speed, and flops are logical shaders*clock speed*2. They do not take into account IPC or efficiency.
Nvidia has changed their core structure a few times since they went to unified shaders, and they renamed their shader count to logical shaders like AMD does when they locked the clock ratio at 2x core frequency.
Bookmarks