LGA 1151

LGA 1151
Type LGA
Contacts 1151
Processors Skylake, Kaby Lake, Cannonlake
Predecessor LGA 1150
Memory support DDR4, DDR3, DDR3L

This article is part of the CPU socket series

LGA 1151[1] is an Intel microprocessor compatible socket which supports the Intel Skylake microprocessor[2] and the Kaby Lake CPU.

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 voltage regulator has again been moved from the CPU die to motherboard.

Most motherboards for this 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 will have UniDIMM support, enabling either type of memory to be placed in the same DIMM, rather than having separate DDR3 and DDR4 DIMMs.[5]

All Skylake chipsets support 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 because Skylake CPUs have dropped support for this video interface.[6] HDMI 2.0 (4K@60 Hz) is only supported on motherboards equipped with Intel’s Alpine Ridge Thunderbolt controller.[7]

Skylake chipsets do not support conventional PCI interface; however, motherboard vendors may implement it using external chips.

Cooling solutions for sockets LGA 1151, 1150, 1155 and 1156 are interchangeable as they all have the same distance of 75 mm between each screw hole.

DDR3 memory support

Intel officially says[8] that Skylake's integrated memory controller (IMC) supports only DDR3L memory modules at 1.35 V and DDR4 at 1.2 V, leading to speculation that higher voltages of DDR3 modules could damage or destroy the IMC and processor.[9] Meanwhile, Asrock, Gigabyte and ASUS all guarantee that their Skylake DDR3 motherboards support DDR3 modules rated at 1.5 and 1.65V.[10][11][12]

Skylake chipsets

See also: Sunrise Point
H110 B150 Q150 H170 Q170 Z170
Overclocking CPU (via BCLK[13] only;[14] might be disabled in new motherboards and BIOS releases[15]) + GPU + RAM (limited) CPU (multiplier + BCLK[13]) + GPU + RAM
Kaby Lake CPUs support Yes, after a BIOS update[16]
Memory support DDR4 (max. 64 GiB total; 16 GiB per slot) / DDR3(L) (max. 32 GiB total; 8 GiB per slot)[17][18]
Maximum DIMM slots 2 4
Maximum USB 2.0/3.0 ports 6/4 6/6 6/8 4/10
Maximum SATA 3.0 ports 4 6
Processor PCI Express configuration
(all 3.0)		 1 ×16 Either 1 ×16; 2 ×8; or 1 ×8 and 2 ×4
PCH PCI Express configuration 6 × 2.0 8 × 3.0 10 × 3.0 16 × 3.0 20 × 3.0
Independent Display Support
(digital ports/pipes)		 3/2 3/3
SATA RAID 0/1/5/10 support No Yes
Intel Active Management, Trusted Execution and vPro Technology No Yes No
Intel VT-d support Yes
Chipset TDP 6 W
Chipset lithography 22 nm
Release date September 1, 2015[19][20] Q3'15[21] September 1, 2015[19][20] August 5, 2015[22]

See also

References

  1. 1 2 Cutress, Ian. "Intel Skylake Z170 Motherboards: A Quick Look at 55+ New Products". Retrieved 2015-08-05.
  2. ↑ "MSI Z170A GAMING M7 (Intel LGA-1151) Review". Retrieved 2015-08-05.
  3. ↑ "GIGABYTE - Motherboard - Socket 1151 - GA-Z170-HD3 DDR3 (rev. 1.0)". Retrieved 2015-09-07.
  4. ↑ "ASRock > B150M Combo-G". Retrieved 2015-09-15.
  5. ↑ Cutress, Ian. "The Intel 6th Gen Skylake Review: Core i7-6700K and i5-6600K Tested". Retrieved 2015-08-05.
  6. ↑ "ARK | Intel® Core™ i7-6700K Processor (8M Cache, up to 4.20 GHz)". Retrieved 2015-08-06.
  7. ↑ Cutress, Ian. "Intel Skylake Z170 Motherboards: A Quick Look at 55+ New Products". Retrieved 2015-08-06.
  8. ↑ "Intel® Core™ i7-6700K Processor (8M Cache, up to 4.20 GHz) Specifications". Intel® ARK (Product Specs). Retrieved 2016-02-06.
  9. ↑ "Skylake's IMC Supports Only DDR3L". Retrieved 2015-09-29.
  10. ↑ "GIGABYTE - Motherboard - Socket 1151 - GA-Z170-HD3 DDR3 (rev. 1.0)". Retrieved 2016-02-06.
  11. ↑ "Fatal1ty Z170 Gaming K4/D3 Memory Support List".
  12. ↑ Günsch, Michael. "Skylake-Mainboards: Asus präsentiert Z170-Platinen mit DDR3 bis 1,65 Volt". ComputerBase (in German). Retrieved 2016-02-06.
  13. 1 2 Cutress, Ian. "The Intel 6th Gen Skylake Review: Core i7-6700K and i5-6600K Tested". Retrieved 2015-09-18.
  14. ↑ "Asus H170-PLUS D3 Manual" (PDF). Retrieved 2015-09-18.
  15. ↑ "It's official: Intel shuts down the cheap overclocking party by closing Skylake loophole". PCWorld. Retrieved 2016-02-09.
  16. ↑ "MSI and Asus update motherboards with Kaby Lake support". KitGuru. 2016-10-06. Retrieved 2016-11-03.
  17. ↑ "Intel bids adieu to DDR3: Majority of 'Skylake-S' mainboards to use DDR4 | KitGuru". www.kitguru.net. Retrieved 2015-05-25.
  18. ↑ "GIGABYTE - Motherboard - Socket 1151 - GA-Z170-HD3 DDR3 (rev. 1.0)". Retrieved 2015-09-07.
  19. 1 2 "Asus Announces 10 New Motherboards Based On Latest 100-Series Intel Chipsets". Retrieved 2015-10-03.
  20. 1 2 "ASUS Announces H170, B150, H110 and Q170 Motherboard Series". www.asus.com. Retrieved 2015-10-03.
  21. ↑ "Intel® Q150 Chipset (Intel® GL82Q150 PCH) Specifications". Intel® ARK (Product Specs). Retrieved 2015-12-26.
  22. ↑ "Intel Unleashes Next-Gen Enthusiast Desktop PC Platform at Gamescom". Intel Newsroom. Retrieved 2015-08-05.
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