<s>
LGA	B-Device
1155	I-Device
,	O
also	O
called	O
Socket	B-Device
H2	I-Device
,	O
is	O
a	O
zero	B-General_Concept
insertion	I-General_Concept
force	I-General_Concept
flip-chip	B-Device
land	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
(	O
LGA	B-Algorithm
)	O
CPU	B-General_Concept
socket	I-General_Concept
designed	O
by	O
Intel	O
for	O
their	O
CPUs	O
based	O
on	O
the	O
Sandy	B-Device
Bridge	I-Device
(	O
2nd	O
Gen	O
)	O
and	O
Ivy	B-Device
Bridge	I-Device
(	O
3rd	O
Gen	O
)	O
microarchitectures	B-General_Concept
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
of	O
LGA	B-Device
1156	I-Device
(	O
known	O
as	O
Socket	O
H	O
)	O
and	O
was	O
itself	O
succeeded	O
by	O
LGA	B-Device
1150	I-Device
in	O
2013	O
.	O
</s>
<s>
Along	O
with	O
selected	O
variations	O
of	O
LGA	B-Device
2011	I-Device
socket	O
,	O
it	O
was	O
the	O
last	O
Intel	O
socket	O
to	O
fully	O
support	O
Windows	B-Application
XP	I-Application
,	O
Windows	B-Application
Server	I-Application
2003	I-Application
,	O
Windows	B-Application
Vista	I-Application
,	O
and	O
Windows	B-Device
Server	I-Device
2008	I-Device
.	O
</s>
<s>
LGA	B-Device
1155	I-Device
has	O
1155	O
protruding	O
pins	O
to	O
make	O
contact	O
with	O
the	O
pads	O
on	O
the	O
processor	O
.	O
</s>
<s>
Processors	O
for	O
LGA1155	B-Device
and	O
LGA1156	B-Device
sockets	O
are	O
not	O
compatible	O
with	O
each	O
other	O
since	O
they	O
have	O
different	O
socket	O
notches	O
.	O
</s>
<s>
LGA	B-Device
1155	I-Device
also	O
marked	O
the	O
beginning	O
of	O
secure	O
boot	O
with	O
support	O
in	O
some	O
later	O
boards	O
.	O
</s>
<s>
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
for	O
Intel	O
's	O
sockets	O
LGA	B-Device
1156	I-Device
,	O
LGA	B-Device
1155	I-Device
,	O
LGA	B-Device
1150	I-Device
,	O
LGA	B-Device
1151	I-Device
and	O
LGA	B-Device
1200	I-Device
.	O
</s>
<s>
Cooling	O
systems	O
are	O
compatible	O
between	O
LGA	B-Device
1155	I-Device
and	O
LGA	B-Device
1156	I-Device
sockets	O
,	O
as	O
the	O
processors	O
have	O
the	O
same	O
dimensions	O
,	O
profile	O
and	O
construction	O
,	O
and	O
similar	O
levels	O
of	O
heat	O
production	O
.	O
</s>
<s>
Sandy	B-Device
Bridge	I-Device
chipsets	O
,	O
except	O
B65	O
,	O
Q65	O
and	O
Q67	O
,	O
support	O
both	O
Sandy	B-Device
Bridge	I-Device
and	O
Ivy	B-Device
Bridge	I-Device
CPUs	O
through	O
a	O
BIOS	O
upgrade	O
.	O
</s>
<s>
With	O
third-party	O
BIOSes	O
like	O
Coreboot	B-Device
,	O
Ivy	B-Device
Bridge	I-Device
processors	O
can	O
be	O
used	O
on	O
those	O
chipsets	O
as	O
well	O
.	O
</s>
<s>
Sandy	B-Device
Bridge	I-Device
based	O
processors	O
officially	O
support	O
up	O
to	O
DDR3-1333	O
memory	O
,	O
however	O
in	O
practice	O
speeds	O
up	O
to	O
DDR3-2133	O
have	O
been	O
tested	O
to	O
work	O
successfully	O
.	O
</s>
<s>
All	O
Ivy	B-Device
Bridge	I-Device
chipsets	O
and	O
motherboards	O
support	O
both	O
Sandy	B-Device
Bridge	I-Device
and	O
Ivy	B-Device
Bridge	I-Device
CPUs	O
.	O
</s>
<s>
Ivy	B-Device
Bridge	I-Device
based	O
processors	O
will	O
officially	O
support	O
up	O
to	O
DDR3-1600	O
,	O
up	O
from	O
DDR3-1333	O
of	O
Sandy	B-Device
Bridge	I-Device
.	O
</s>
<s>
Some	O
consumer	O
Ivy	B-Device
Bridge	I-Device
chipsets	O
will	O
also	O
allow	O
overclocking	B-Application
of	O
K-series	O
processors	O
.	O
</s>
<s>
A	O
PCGHX	O
user	O
wrote	O
an	O
article	O
on	O
the	O
website	O
describing	O
how	O
to	O
take	O
UEFI	O
modules	O
from	O
some	O
Z97	B-Device
motherboards	O
and	O
use	O
them	O
with	O
an	O
Z77-motherboard	O
to	O
make	O
the	O
latter	O
support	O
booting	O
from	O
an	O
SSD	O
using	O
the	O
NVM	B-Application
Express	I-Application
protocol	O
,	O
instead	O
of	O
the	O
AHCI	O
protocol	O
.	O
</s>
<s>
That	O
article	O
claims	O
,	O
the	O
Z97	B-Device
motherboards	O
were	O
the	O
first	O
to	O
officially	O
and	O
fully	O
support	O
the	O
NVMe	B-Application
protocol	O
.	O
</s>
