<s>
LGA	B-Device
1156	I-Device
(	O
land	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
1156	O
)	O
,	O
also	O
known	O
as	O
Socket	B-Device
H	I-Device
or	O
H1	O
,	O
is	O
an	O
Intel	O
desktop	O
CPU	B-General_Concept
socket	I-General_Concept
.	O
</s>
<s>
Its	O
incompatible	O
successor	O
is	O
LGA	B-Device
1155	I-Device
.	O
</s>
<s>
LGA	B-Device
1156	I-Device
,	O
along	O
with	O
LGA	B-Device
1366	I-Device
,	O
were	O
designed	O
to	O
replace	O
LGA	B-Device
775	I-Device
.	O
</s>
<s>
Whereas	O
LGA	B-Device
775	I-Device
processors	O
connect	O
to	O
a	O
northbridge	B-Device
using	O
the	O
Front	B-Architecture
Side	I-Architecture
Bus	I-Architecture
,	O
LGA	B-Device
1156	I-Device
processors	O
integrate	O
the	O
features	O
traditionally	O
located	O
on	O
a	O
northbridge	B-Device
within	O
the	O
processor	O
itself	O
.	O
</s>
<s>
The	O
LGA	B-Device
1156	I-Device
socket	O
allows	O
the	O
following	O
connections	O
to	O
be	O
made	O
from	O
the	O
processor	O
to	O
the	O
rest	O
of	O
the	O
system	O
:	O
</s>
<s>
PCI-Express	O
2.0	O
×16	O
for	O
communication	O
with	O
a	O
graphics	O
card	O
.	O
</s>
<s>
DMI	B-Architecture
for	O
communication	O
with	O
the	O
Platform	B-Device
Controller	I-Device
Hub	I-Device
(	O
PCH	B-Device
)	O
.	O
</s>
<s>
This	O
consists	O
of	O
a	O
PCI-Express	O
2.0	O
×4	O
connection	O
.	O
</s>
<s>
FDI	B-Device
for	O
communication	O
with	O
the	O
PCH	B-Device
.	O
</s>
<s>
This	O
consists	O
of	O
two	O
DisplayPort	B-Protocol
connections	O
.	O
</s>
<s>
The	O
LGA	B-Device
1366	I-Device
platform	O
reached	O
EOL	O
on	O
June	O
29	O
,	O
2012	O
.	O
</s>
<s>
LGA	B-Device
1156	I-Device
reached	O
EOL	O
on	O
December	O
7	O
,	O
2012	O
.	O
</s>
<s>
For	O
LGA	B-Device
1156	I-Device
the	O
4	O
holes	O
for	O
fastening	O
the	O
heatsink	O
to	O
the	O
motherboard	O
are	O
placed	O
in	O
a	O
square	O
with	O
a	O
lateral	O
length	O
of	O
75mm	O
.	O
</s>
<s>
This	O
configuration	O
was	O
retained	O
for	O
the	O
later	O
,	O
LGA	B-Device
1155	I-Device
,	O
LGA	B-Device
1150	I-Device
,	O
LGA	B-Device
1151	I-Device
,	O
and	O
LGA	B-Device
1200	I-Device
sockets	O
meaning	O
that	O
cooling	O
solutions	O
should	O
generally	O
be	O
interchangeable	O
.	O
</s>
<s>
All	O
LGA	B-Device
1156	I-Device
processors	O
and	O
motherboards	O
made	O
to	O
date	O
are	O
interoperable	O
,	O
making	O
it	O
possible	O
to	O
switch	O
between	O
a	O
Celeron	B-Device
,	O
Pentium	B-Device
,	O
Core	B-Device
i3	I-Device
or	O
Core	B-Device
i5	I-Device
with	O
integrated	O
graphics	O
and	O
a	O
Core	B-Device
i5	I-Device
or	O
Core	B-Device
i7	I-Device
without	O
graphics	O
.	O
</s>
<s>
However	O
,	O
using	O
a	O
chip	O
with	O
integrated	O
graphics	O
on	O
a	O
P55	B-Device
motherboard	O
will	O
(	O
in	O
addition	O
to	O
likely	O
requiring	O
a	O
BIOS	O
update	O
)	O
not	O
allow	O
use	O
of	O
the	O
on-board	O
graphics	O
processor	O
,	O
and	O
likewise	O
,	O
using	O
a	O
chip	O
without	O
integrated	O
graphics	O
on	O
a	O
H55	O
,	O
H57	O
or	O
Q57	O
motherboard	O
will	O
not	O
allow	O
use	O
of	O
the	O
motherboard	O
's	O
graphics	O
ports	O
.	O
</s>
<s>
The	O
Desktop	O
chipsets	O
that	O
officially	O
support	O
LGA	B-Device
1156	I-Device
are	O
Intel	O
's	O
H55	O
,	O
H57	O
,	O
P55	B-Device
,	O
and	O
Q57	O
.	O
</s>
<s>
Some	O
small	O
Chinese	O
manufacturers	O
are	O
producing	O
LGA	B-Device
1156	I-Device
motherboards	O
based	O
on	O
H61	O
chipset	O
,	O
and	O
ASRock	O
,	O
for	O
very	O
short	O
time	O
,	O
produced	O
LGA	B-Device
1156	I-Device
motherboard	O
based	O
on	O
P67	O
chipset	O
,	O
the	O
P67	O
Transformer	O
.	O
</s>
<s>
It	O
exclusively	O
supports	O
Lynnfield	B-Device
processors	O
and	O
was	O
discontinued	O
after	O
B2	O
revision	O
of	O
6	O
series	O
chipsets	O
was	O
recalled	O
,	O
not	O
receiving	O
a	O
version	O
with	O
B3	O
revision	O
of	O
P67	O
chipset	O
.	O
</s>
