EvilMonkeyz on Instagram: "Check out this AMD silicon wafer that just arrived! - I purchased this wafer from Ebay and it arrived well packaged, which is good because this wafer is even more fragile than most. That is because this wafer has been through a process in silicon wafer manufacturing known as “Backgrinding”. - This process grinds away the backside of the wafer until the desired thickness is reached. You can generally tell this has been done based on the pattern on the back of the wafer.