An 1151 CPU socket will not fit in a motherboard with an 1155 socket. As the arrangement for pins is different for both of them, the CPU will end up dead even if you managed to get them together.
LGA 1151 CPU Socket in 1155 Socket of Motherboard – How Is It?
Purchasing a CPU and a motherboard goes hand in hand because of the CPU socket. The sockets of a CPU on a motherboard are different for all Intel and AMD processors. As the development and advancement of the CPUs continue, Intel has come with its newest LGA 1151 sockets.
The Meaning of the Numbers
The 1151 socket is a Land Grid Array type of socket or commonly known as “LGA”. This is a socket that is used in motherboards and compatible with Intel microprocessors. The Socket 1151 is also known as Socket H4 according to Intel documentation.
The number 1151 of an LGA 1151 socket means it has 1151 land contacts. In other words, it has 1151 protruding pins that are used to connect to the pads on the CPU. Arranged as a grid 40 x 40, the 24 x 16 section is depopulated in the center of the grid.
Moreover also depopulated from the socket edges and corners for the 1151 sockets. The 1155 socket, with the architecture being different, has exactly 1155 pins. The function of each pin is switched around to increase efficiency.
The Compatibility of an LGA 1151 CPU With an LGA 1155 Motherboard
Attempting to fit an LGA 1151 CPU socket in an 1155 socket will cause damage to both parts. The amount of pins is not the only concerning issue here. The architecture of these two sockets is completely different. This leads to different locations of the components of the chip.
As the functions of the pins are different in an 1151 socket compared to an 1155 socket, you will end up with a dead CPU even if you could get the CPU to fit. Therefore, if you are planning to upgrade your Intel processor, you will have to upgrade your motherboard with a suitable socket as well.
Conclusion
It is therefore clear that checking the CPU socket is important before decidedly purchasing a motherboard. Trying to fit an LGA socket into a different LGA socket will come to no avail and lead to the waste of a great deal of money.
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