LGA 1151

LGA 1151
Release dateSeptember 1, 2015 (2015-09-01)
Designed byIntel
Manufactured byLotes
TypeLGA-ZIF
Chip form factorsFlip-chip
Contacts1151
FSB protocolPCI Express
Processors
PredecessorLGA 1150
SuccessorLGA 1200
Memory support
This article is part of the CPU socket series

LGA 1151,[1] also known as Socket H4, is a type of zero insertion force flip-chip land grid array (LGA) socket for Intel desktop processors which comes in two distinct versions: the first revision which supports both Intel's Skylake[2] and Kaby Lake CPUs, and the second revision which supports Coffee Lake CPUs exclusively.

LGA 1151 is designed as a replacement for the LGA 1150 (known as Socket H3). LGA 1151 has 1151 protruding pins to make contact with the pads on the processor. The Fully Integrated Voltage Regulator, i.e. a voltage regulator which integrated on the CPU's die, introduced with Haswell and Broadwell, has again been moved to the motherboard.

Most motherboards for the first revision of the socket support solely DDR4 memory,[1] a lesser number support DDR3(L) memory,[3] and the least number have slots for both DDR4 or DDR3(L) but only one memory type can be installed.[4] Some have UniDIMM support, enabling either type of memory to be placed in the same DIMM, rather than having separate DDR3 and DDR4 DIMMs.[5] The second revision socket motherboards support only DDR4 memory.

Skylake, Kaby Lake, and Coffee Lake chipsets support VT-d, Intel Rapid Storage Technology, Intel Clear Video Technology, and Intel Wireless Display Technology (an appropriate CPU is required). Most motherboards with the LGA 1151 socket support varying video outputs (DVI, HDMI 1.4 or DisplayPort 1.2 – depending on the model). VGA output is optional since Intel dropped support for this video interface starting with Skylake.[6] HDMI 2.0 (4K@60 Hz) is only supported on motherboards equipped with Intel's Alpine Ridge Thunderbolt controller.[7]

Skylake, Kaby Lake, and Coffee Lake chipsets do not support the legacy conventional PCI interface; however, motherboard vendors may implement it using external chips.

  1. ^ a b Cutress, Ian (August 5, 2015). "Intel Skylake Z170 Motherboards: A Quick Look at 55+ New Products". AnandTech. Retrieved August 5, 2015.
  2. ^ "MSI Z170A GAMING M7 (Intel LGA-1151) Review". TechpowerUp. August 5, 2015. Retrieved August 5, 2015.
  3. ^ "GIGABYTE - Motherboard - Socket 1151 - GA-Z170-HD3 DDR3 (rev. 1.0)". Gigabyte. Retrieved September 7, 2015.
  4. ^ "ASRock > B150M Combo-G". ASRock. Retrieved September 15, 2015.
  5. ^ Cutress, Ian (August 5, 2015). "The Intel 6th Gen Skylake Review: Core i7-6700K and i5-6600K Tested". AnandTech. Retrieved August 5, 2015.
  6. ^ "Intel® Core™ i7-6700K Processor (8M Cache, up to 4.20 GHz)". intel. Retrieved August 6, 2015.
  7. ^ Cutress, Ian (August 5, 2015). "Intel Skylake Z170 Motherboards: A Quick Look at 55+ New Products". AnandTech. Retrieved August 6, 2015.