The AMDSocket C32 is the server processor socket for AMD's current single-CPU and dual-CPU Opteron 4000 series CPUs. It is the successor to Socket AM3 for single-CPU servers and the successor for Socket F for lower-end dual-CPU servers. (High-end dual-CPU servers will use Socket G34 with 8 and 12-core Magny-Cours Opteron CPUs.) Socket C32 supports two DDR3 SDRAM channels. It is based on the current Socket F and uses a similar 1207-land LGA socket but is not physically or electrically compatible with Socket F due to the use of DDR3 SDRAM instead of the DDR2 SDRAM that Socket F platforms use.
Socket C32 was launched June 23, 2010 as part of the San Marino platform with the four and six-core Opteron 4100 "Lisbon" processors. Like Socket G34, it also uses the AMD SR5690, SR5670, and SR5650 chipsets. Socket C32 is also being used in the ultra-low-power Adelaide platform with the SR5650 chipset and HT1 interconnects instead of HT3.1. Socket C32 also supports the Bulldozer-based six- and eight-core "Valencia" Opterons introduced in November of 2011.