LGA 1366 Motherboard: CPU Socket Type & Compatible CPU List

What Is LGA 1366 Motherboard?

LGA 1366 motherboard refers to the kind of motherboard that is equipped with the LGA 1366 type of CPU socket.

CPU Socket LGA 1366 Basic Information

LGA stands for land grid array, and 1366 refers to the number of the pins or contacts the CPU socket has. Therefore, LGA 1366 means the CPU slot is of land grid array (flip-chip) form factors and has 1366 protruding pins. The protruding pins are used to touch the contact points on the bottom of the CPU and access up to 3 channels of DDR3 memory via the CPU’s internal memory controller.

LGA 1366 makes use of the Intel QuickPath Interconnect (QPI) to connect the processor to a reduced-function northbridge, which serves mainly as a PCI Express controller. The QPI frequency is 1x to 2x. A slower Direct Media Interface (DMI) is used to connect Intel’s latest northbridge and southbridge components.

By comparing, the Intel’s Socket 1156 (Socket H) moves the QPI link and PCI-E controller onto the processor itself, and uses DMI to connect a single-component “chipset” (now called Platform Controller Hub – PCH) that serves traditional southbridge functions. And, the difference in the number of memory channels is mostly reflected in pin numbers (PINs).

Socket LGA 1366 firstly served processor Intel Core i7 which was published in Nov. 2008. Its compatible processor dimensions are 45 mm x 42.5 mm. LGA 1366 CPU socket and its processors were discontinued sometime in early 2012. And, its successor socket LGA 2011 supports Sandy Bridge E-series processors.

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LGA 1366 CPU List  

The LGA 1366 processors are Intel Core i7 9xx series and Intel Xeon 35xx, 36xx, 55xx, 56xx series. The details are below.

Intel Core i7 9xx series: Intel Core i7-920, Intel Core i7-930, Intel Core i7-940, Intel Core i7-950, Intel Core i7-960, Intel Core i7-965 Extreme Edition, Intel Core i7-975 Extreme Edition, Intel Core i7-970, Intel Core i7-980, Intel Core i7-980X, Intel Core i7-990X, Intel Core i7-995X.

Intel Xeon 35xx series: Intel Xeon W3503, Intel Xeon W3505, Intel Xeon W3520, Intel Xeon W3530, Intel Xeon W3540, Intel Xeon W3550, Intel Xeon W3565, Intel Xeon W3570, Intel Xeon W3580, Intel Xeon LC3518, Intel Xeon LC3528 & Intel Xeon LC3539.

Intel Xeon 36xx series: Intel Xeon W3670, Intel Xeon W3680 and Intel Xeon W3690.

Intel Xeon 55xx series: Intel Xeon E5502, Intel Xeon E5503, Intel Xeon E5504, Intel Xeon E5506, Intel Xeon E5507, Intel Xeon E5520, Intel Xeon E5530, Intel Xeon E5540, Intel Xeon L5506, Intel Xeon L5508, Intel Xeon L5518, Intel Xeon L5520, Intel Xeon L5530, Intel Xeon X5550, Intel Xeon X5560, Intel Xeon X5570, Intel Xeon W5580, Intel Xeon W5590, Intel Xeon EXC5539, Intel Xeon EX5509, Intel Xeon EC5549, Intel Xeon LC5518, Intel Xeon LC5528.

Intel Xeon 56xx series: Intel Xeon E5603, Intel Xeon E5606, Intel Xeon E5607, Intel Xeon E5620, Intel Xeon E5630, Intel Xeon E5640, Intel Xeon E5645, Intel Xeon E5649, Intel Xeon L5609, Intel Xeon L5618, Intel Xeon L5630, Intel Xeon L5638, Intel Xeon L5639, Intel Xeon L5640, Intel Xeon L5645, Intel Xeon X5650, Intel Xeon X5660, Intel Xeon X5667, Intel Xeon X5670, Intel Xeon X5672, Intel Xeon X5675, Intel Xeon X5677, Intel Xeon X5679, Intel Xeon X5680, Intel Xeon X5687, Intel Xeon X5690, Intel Xeon X5698.

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LGA 1366 Motherboards

The following is going to introduce you three best (popular) motherboards of LGA 1366 socket.

#1 ASUS Socket 1366 Motherboard Intel X58 ATX

This motherboard is equipped with the following parts:

• Compatible chipset: Intel X58 & ICH10R Memory: 6x 240pin DDR3-1866/1800/1600/1333/1066 DIMMs, triple channel, non-ECC/un-buffered, max capacity up to 24 GB.
• Compatible CPU: Intel Core i7 processor and its i7 Extreme Edition; QPI up to 6400 MT/s; support Intel Turbo Boost Technology
• Audio: Integrated Realtek ALC8928 8-channel high definition audio CODEC.
• SATA: 6x SATA2 ports, supporting RAID 0, 1, 5, 10 (by Intel ICH10R); 2x SATA3 ports (by Marvell 9128 PCI-e).

#2 Intel S5520UR Dual LGA1366 Server Board E22554-752

This is an LGA 1366 dual socket motherboard with 2x LGA 1366 coolers. It has a 12x memory slot of DDR3 maximum 96 GB RAM. This type of motherboard is manufactured by Intel and weighs 7 pounds.

#3 Supermicro LGA 1366 Server Motherboard X8SAX-O

The parameters of this LGA 1366 motherboard are below:

• Compatible CPU: Intel Core i7-965, i7-940, i7-920 and Nehalem processor; QPI up to 6.4 GT/s.
• Compatible chipset: Intel X58 & ICH10R + PXH/V.
• Memory: 6x 240pin DDR3-1333/1066, 800 DIMMs, 3 channels, ECC/non-ECC unbuffered, up to 24GB.
• SATA: 6x SATA2 ports, support RAID 0, 1, 5, 10
• LAN: Dual Intel 82574L Gigabit Ethernet controller.