An overview of CPU socket types - CompTIA A+ 220-801: 1.6

Intel LGA 775

• 775 pins, LGA package
• Also called Socket T
• Named for the cancelled Tejas core
• Circa 2004
• Seen in later-version Pentium 4, Intel Core 2 Duo, Xeon, and Celeron

Intel LGA 1366

• 1,366 pins, LGA package
• Also called Socket B
• Replaced the LGA 775
• Circa 2008
• Used by Intel Core i7

Intel LGA 1156

• 1,156 pins, LGA package
• Also called Socket H1
• Also replaces LGA 775
• Released in 2009
• Integrates Northbridge onto the chip 

Intel LGA 1155

• 1,155 pins, LGA package
• Socket H2
• Replacement for LGA 1156 but looks very similar
• 2011 release
• Supports Intel Sandy Bridge and Ivy Bridge micro processors

Intel processor summary

 Socket 940

• 940 pins
• Pin grid array (PGA) and Zero Insertion Force (ZIF)
• 2003 release
• AMD Opteron and AMD Athlon 64 FX

• Designed for 64-bit servers
• Support for DDR RAM

Socket AM2

• 940 pins, PGA-ZIF package
• But not compatible with Socket 940
• Circa 2006
• Processors support
• DDR2 memory
• But not DDR

 Socket F

• 1,207 pins
• Land grid array (LGA) package
• Released in 2006
• Same socket generation as AM2

• Designed for servers
• Registered DDR2 memory
• Faster FSB

 Socket AM2+

• 940 pins, PGA - ZIF package
• Physically the same as the AM2
• Released in 2007
• AM2+ can potentially operate on AM2 motherboard
• And AM2 processors on an AM2+ motherboard
• May need a BIOS upgrade
• Faster communication and better power management

Socket AM3

• 941 pins, PGA - ZIF package
• Replaces the AM2/AM2+
• Not physically compatible with the AM2/AM2+
• Released in 2009
• AM3 processors could be used in Socket AM2/AM2+ with a BIOS update
• Adds support for DDR3
• Faster, better, stronger

Socket AM3+

• 942 pins, PGA-ZIF package
• One more pin than the AM3
• Released in 2011
• Use an AM3 processor in an AM3+ motherboard 
• Using AM3+ in AM3 boards is not supported by AMD

Socket FM1

•  905 pins
• PGA-ZIF package
• 2011 release
• AMD A-series processors
• Faster speeds
• DDR3 support
• Integrated PCIe 2.0 controller

 AMD socket summary