Skip to content
Early Sockets (1990s)
Socket 1, 2, 3 (1990-1993)
- Processors: Intel 80486 series (486).
- Pins:
- Socket 1: 169 pins.
- Socket 2: 238 pins.
- Socket 3: 237 pins (minor updates).
Socket 4 (1993)
- Processors: Early Intel Pentium (60/66 MHz).
- Pins: 273 pins.
Socket 5 (1994)
- Processors: Pentium (75–133 MHz).
- Pins: 320 pins.
Socket 7 (1995)
- Processors: Pentium, AMD K5/K6, Cyrix 6×86.
- Pins: 321 pins.
- Feature: Open standard, used by multiple manufacturers.
Socket 8 (1996)
- Processors: Pentium Pro.
- Pins: 387 pins.
Slot Era (1997-1999)
Slot 1 (1997)
- Processors: Pentium II, early Pentium III, and Celeron.
- Type: Cartridge-based design for easier CPU upgrades.
Slot 2 (1998)
- Processors: Pentium II Xeon and early Pentium III Xeon (server-grade).
- Type: Larger slot for higher pin count and multi-CPU configurations.
Socket 370 (1999)
- Processors: Pentium III, Celeron.
- Pins: 370 pins.
- Feature: Transition back to socketed designs from slots.
Pentium 4 and NetBurst Era (2000s)
Socket 423 (2000)
- Processors: Early Pentium 4.
- Pins: 423 pins.
Socket 478 (2001)
- Processors: Pentium 4 (later models), Celeron.
- Pins: 478 pins.
- Feature: Replaced Socket 423 for better thermal management.
Modern Socket Revolution: LGA (Land Grid Array)
LGA 775 (Socket T) (2004)
- Processors: Pentium 4, Pentium D, Core 2 Duo/Quad.
- Pins: 775 pins.
- Feature: First mainstream Intel socket to move contacts to the motherboard.
Core i Series (2006–2020)
LGA 1366 (Socket B) (2008)
- Processors: Core i7 (Nehalem), Xeon.
- Pins: 1366 pins.
- Feature: Triple-channel DDR3 memory support.
LGA 1156 (Socket H1) (2009)
- Processors: Core i3, i5, i7 (Lynnfield, Clarkdale).
- Pins: 1156 pins.
- Feature: Integrated memory controller and PCIe lanes.
LGA 1155 (Socket H2) (2011)
- Processors: Sandy Bridge, Ivy Bridge.
- Pins: 1155 pins.
- Feature: Dual-channel DDR3.
LGA 2011 (Socket R) (2011)
- Processors: High-end desktop (HEDT) and server processors.
- Pins: 2011 pins.
- Feature: Quad-channel DDR3/DDR4 memory support.
LGA 1150 (Socket H3) (2013)
- Processors: Haswell, Broadwell.
- Pins: 1150 pins.
LGA 1151 (2015)
- Processors: Skylake, Kaby Lake, Coffee Lake.
- Pins: 1151 pins.
- Feature: Support for DDR3/DDR4 memory.
Recent and Current Generations (2020–2025)
LGA 1200 (2020)
- Processors: 10th Gen (Comet Lake), 11th Gen (Rocket Lake).
- Pins: 1200 pins.
- Feature: DDR4, PCIe 3.0/4.0.
LGA 1700 (2021)
- Processors: 12th Gen (Alder Lake), 13th Gen (Raptor Lake).
- Pins: 1700 pins.
- Feature: DDR4/DDR5 memory, PCIe 5.0, hybrid architecture (performance and efficiency cores).
LGA 4189 (Server)
- Processors: Xeon Scalable (Ice Lake-SP).
- Pins: 4189 pins.
- Feature: Eight-channel DDR4, PCIe 4.0.
LGA 4677 (2023)
- Processors: Xeon Scalable 4th Gen (Sapphire Rapids).
- Pins: 4677 pins.
- Feature: DDR5, PCIe 5.0, CXL (Compute Express Link).
Upcoming Socket
LGA 1851 (Expected 2024-2025)
- Processors: 14th Gen Meteor Lake, Arrow Lake.
- Feature: DDR5, energy efficiency, enhanced PCIe standards.
