Computer central processing unit (CPU). This is the underside of an AMD Phenom II CPU. It is a socket AM3 processor with four cores. The gold pins see Stock Photo - Alamy
How to identify AMD AM3 socket? :: BIOSTAR FAQ
AMD Athlon II X4-635 Quad-Core 2.9GHz 2M Socket AM3 CPU Processors ADX635WFK42GI | eBay