LGA 1151

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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 future 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. 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 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

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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
Memory support DDR4 (max. 64 GiB total; 16 GiB per slot) / DDR3(L) (max. 32 GiB total; 8 GiB per slot)[16][17]
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[18][19] Q3'15[20] September 1, 2015[18][19] August 5, 2015[21]

See also

References

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  21. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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