File:Shinra04-cpumobo.jpg

This close-up shows the Opteron 2380 CPUs being inserted into the two sockets in the motherboard. Socket F is unique for AMD CPUs because it uses a flip-chip Land Grid Array (LGA) design, instead of the more traditional Pin Grid Array (PGA). LGA designs remove the pins from the bottom of the CPU and put them on the motherboard sockets, with pads of bare gold-plated copper on the bottom of the CPU instead. This allows for higher density of contacts in minimal space consumed, as Socket F CPUs such as these have 1,207 contacts!