Land Grid Array (LGA)

• pins are located in the CPU socket (e.g. motherboard)

Pin Grid Array (PGA)

• pins are located on the CPU itself
• variants:
  • Plastic Pin Grid Array (PPGA)
  • Flip-Chip Pin Grid Array (FCPGA)
  • Ceramic Pin Grid Array (CPGA)
  • Organic Pin Grid Array (OPGA)

Zero Insertion Force (ZIF)

• pins are located either on the socket or CPU
• is a type of socket that requires very little (but not literally zero) force for insertion. then uses a lever to secure the placement

Ball Grid Array (BGA)

• is not technically a socket
• microprocessors are permanently mounted in this socket
• instead of pins, some copper balls are soldered directly to the motherboard

• Socket 423 - It was used in the versions that gave rise to the Pentium 4 – a kind of legend - the “quality mark” that every computer geek dreamed of
• LGA 771 - To install server and desktop Xeons and Core 2
• LGA 775 - Released in 2004 for 4 Stumps, Dual-Core, and Core 2 Duo
• LGA 1155 - Introduced in 2011 For “stones” on Sandy Bridge architecture
• LGA 1356 - It appeared in 2012 as a solution for dual-processor servers
• LGA 1151 - Replacement LGA1150, introduced in 2015 In 2017, version 1151v2 appeared, which is currently supported
• LGA 2066 - Replacement of LGA 2011-3 released in 2017
• LGA 1200 - Released in Q2 2020 for Comet Lake architecture
• LGA 1700 - Released in Q4 2021 for Alder Lake and Raptor Lake

• Socket A - Introduced in 1999 as a solution for the new Athlon CPU, the main competitor to the Pentium III
• Socket 754 - This is the first socket to be used in the AMD Athlon 64 processor. This type allows the use of Turion and Sempron
• Socket 939 - “Simplified” version of the server Socket 940 Used since 2004
• AM3 - It appeared in 2009 Designed for processors that already support DDR3
• FM1 - Introduced in 2011 as a solution for hybrid CPUs with Fusion architecture
• AM1 - Introduced in 2014 for budget Kabini CPUs with Jaguar microarchitecture
• AM4 - Introduced in 2016 as a slot for Ryzen brand processors on Zen architecture (PGA)
• TR4 - Modification for Ryzen Threadripper processors, released in 2017
• AM5 - Introduced in 2022 for Zen 4 microarchitecture (LGA)

SP3

LGA 4094

Mainstream server / data-center

• EPYC “Naples” (7001)
• EPYC “Rome” (7002)
• EPYC “Milan” (7003)

• 8 channels DDR4
• full I/O integrated in the CPU (system-on-chip design)

SP4

—

(Not publicly used / announced)

—

—

SP5

LGA 6096

High-performance / density server / general server segment

• EPYC “Genoa” and successors (e.g. 9004 series)

• 12 channels of DDR5
• large I/O (PCIe 5.0)

SP6

LGA 4844

Lower-power / edge / telco / compact server platforms

• EPYC “Siena” (8004 series)

• smaller socket “variant” of SP5
• fewer memory channels (6)
• I/O, focused on reduced footprint / power efficiency

SP7

LGA 7536 (projected)

Future high-end / next generation servers

• EPYC “Venice” / “Verano” / future “9006 / 9007” series

• expected to support advanced features (DDR5, PCIe Gen 6, large core counts)