LGA 1151, 1150 and 1155 Socket Compatibility and Differences


LGA 1151, LGA 1150 and LGA 1155 refers to the socket that have the Intel motherboard and processors. Also instead of LGA is usually called “FCLGA”, which is the way Intel normally calls its processor sockets.

The main difference of these sockets is that each one belongs to processors of different generations.

  • Second and third generation are the Sandy Bridge and Ivy Bridge processors, which use LGA 1155
  • Fourth and fifth generation are the Haswell and Haswell Refresh processors, which use LGA 1150
  • Sixth, seventh and eighth generation are the Skylake, Kaby Lake and Coffee Lake processors, which use LGA 1151

Compatibility of LGA 1151, 1150 and 1155 motherboards and processors

Unlike AMD AM3 and AM3 + processor compatibility, Intel processors are not compatible with motherboards with different sockets. This means that an LGA 1151 processor is only compatible with an LGA 1151 motherboard and thus an 1150 processor is only compatible with a motherboard with socket 1150.

In summary, you can not put an LGA processor 1151 on an LGA 1150 motherboard, nor an LGA 1150 processor on a LGA MOBO 1151 Knowing that both have to have the same socket because they are not physically compatible to say that is the same situation with the LGA 1155.

It is advisable to have the latest socket motherboard possible. Since as it is seen, it can last two or three generations of processors.

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How can I tell which socket has a processor or a motherboard?

The simplest way to find out is by looking for the product on the manufacturer’s website. If for example, you want to know which socket is an Intel processor, you can look at the official Intel website. In the same way, if you want to know which socket has a certain ASUS motherboard you look for its model on the manufacturer’s website.