Minor dark mark on the CPU's connection was resolved.
Minor dark mark on the CPU's connection was resolved.
Several 4th generation Intel chips were widely available, including the 4570 and similar models. Also found on some coffee Lake CPUs.
I have roughly half of my old Intel chips that are still working fine, with one spot remaining similar to the others. This particular chip, the 6600k, is the only one I still have that looks alike and functions properly. You might want to gently clean it using alcohol at least 91% strong to see if it improves or fades. It's a hidden area and doesn't impact performance, so leave it alone unless necessary. If it's not broken, don't try to fix it.