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#Post#: 8--------------------------------------------------
LGA 1156 - Introduction
By: Lion_Heart Date: October 16, 2012, 11:53 pm
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LGA 1156, also known as Socket H[2][3] or H1, is an Intel
desktop CPU socket. LGA stands for land grid array. Its
incompatible successor is LGA 1155.
LGA 1156, along with LGA 1366, were designed to replace LGA 775.
LGA 1156 is very different from LGA 775. LGA 775 processors were
connected to a northbridge using the Front Side Bus. With LGA
1156, the features that were traditionally on a northbridge are
integrated onto the processor. The LGA 1156 socket allows the
following connections to be made from the processor to the rest
of the system:

card. Some processors allow this connection to be divided into
two ×8 lanes to connect two graphics cards. Some
motherboard manufacturers use Nvidia's NF200 chip to allow even
more graphics cards to be used.

(PCH). This consists of a PCIExpress 2.0 ×4 connection.

two DisplayPort connections.

The clock speed of the memory that is supported will depend on
the processor.
Supported processors
Code name
Frequency Cores/Threads Max
Memory Speed
Lynnfield
2.66-2.8 GHz 4/4
DDR3-1333
Lynnfield Core i7 i7-8xx
2.8-2.93 GHz 4/8
DDR3-1333
Lynnfield Xeon L34xx
1.86 GHz 4/4 or 4/8
DDR3-1333
Lynnfield Xeon X34xx
2.4-2.93 GHz 4/4 or 4/8
DDR3-1333
Clarkdale Celeron G1xxx
2.26 GHz 2/2
DDR3-1066
Clarkdale Pentium G6xxx
2.80 GHz 2/2
DDR3-1066
Clarkdale Core i3 i3-5xx
2.93-3.2 GHz 2/4
DDR3-1333
Clarkdale Core i5 i5-6xx
3.2-3.6 GHz 2/4
DDR3-1333
All LGA 1156 processors and motherboards made to date are
interoperable, making it possible to switch between a Celeron,
Pentium, Core i3 or Core i5 with integrated graphics and a Core
i5 or Core i7 without graphics. However, using a chip with
integrated graphics on a P55 motherboard will (in addition to
likely requiring a BIOS update) not allow use of the on-board
graphics processor, and likewise, using a chip without
integrated graphics on a H55, H57 or Q57 motherboard will not
allow use of the motherboard's graphics ports.
Note i5 and i7 chips currently manufactured by Intel are not
compatible with the LGA 1156 socket.
Supported chipsets
The Desktop chipsets that support LGA 1156 are Intel's H55, H57,
P55, and Q57. Server chipsets supporting the socket are Intel's
3400, 3420 and 3450.
Type :- LGA
Chip form :- Flip-chip land grid array
factors
Contacts :- 1156
FSB protocol :-PCIe 16× (video) + 4× (DMI) +
2 DP (FDI), 2 DDR3 channels
Processor :- 37.5 × 37.5 mm[1]
dimensions
Processors :-Intel Celeron, Intel Core i3
Intel Core i5, Intel Core i7
Intel Pentium, Intel Xeon
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