<s>
LGA	O
771	O
,	O
also	O
known	O
as	O
Socket	B-Device
J	I-Device
,	O
is	O
a	O
CPU	O
interface	O
introduced	O
by	O
Intel	O
in	O
2006	O
.	O
</s>
<s>
It	O
is	O
used	O
in	O
Intel	B-Device
Core	I-Device
microarchitecture	I-Device
and	O
NetBurst	B-Device
microarchitecture	O
(	O
Dempsey	O
)	O
based	O
DP-capable	O
server	O
processors	O
,	O
the	O
Dual-Core	B-Device
Xeon	I-Device
is	O
codenamed	O
Dempsey	O
,	O
Woodcrest	O
,	O
and	O
Wolfdale	B-Device
and	O
the	O
Quad-Core	O
processors	O
Clovertown	B-Device
,	O
Harpertown	O
,	O
and	O
Yorkfield-CL	O
.	O
</s>
<s>
It	O
is	O
also	O
used	O
for	O
the	O
Core	B-Device
2	I-Device
Extreme	O
QX9775	O
,	O
and	O
blade	O
servers	O
designated	O
under	O
Conroe-CL	O
.	O
</s>
<s>
It	O
was	O
succeeded	O
by	O
LGA	B-Device
1366	I-Device
for	O
the	O
Nehalem-based	O
Xeon	B-Device
processors	O
.	O
</s>
<s>
As	O
its	O
name	O
implies	O
,	O
it	O
is	O
a	O
land	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
with	O
771	O
contacts	O
.	O
</s>
<s>
Instead	O
,	O
it	O
has	O
771	O
protruding	O
lands	O
which	O
touch	O
contact	O
points	O
on	O
the	O
underside	O
of	O
the	O
microprocessor	B-Architecture
.	O
</s>
<s>
The	O
"	O
J	O
"	O
in	O
"	O
Socket	B-Device
J	I-Device
"	O
refers	O
to	O
the	O
now-canceled	O
processor	O
codenamed	O
"	O
Jayhawk	B-Device
"	O
,	O
which	O
was	O
expected	O
to	O
debut	O
alongside	O
this	O
interface	O
.	O
</s>
<s>
It	O
is	O
intended	O
as	O
a	O
successor	O
to	O
Socket	B-Device
604	I-Device
and	O
takes	O
much	O
of	O
its	O
design	O
from	O
LGA	B-Device
775	I-Device
and	O
is	O
almost	O
pin	O
compatible	O
with	O
LGA	B-Device
775	I-Device
.	O
</s>
<s>
Small	O
adapters	O
developed	O
by	O
Chinese	O
computer	O
DIY	O
enthusiasts	O
are	O
available	O
to	O
allow	O
LGA	O
771	O
CPUs	O
to	O
be	O
installed	O
in	O
LGA	B-Device
775	I-Device
motherboards	O
,	O
if	O
the	O
BIOS	O
microcode	O
supports	O
them	O
(	O
but	O
it	O
is	O
also	O
possible	O
to	O
add	O
supporting	O
microcode	O
manually	O
)	O
.	O
</s>
<s>
This	O
also	O
allows	O
for	O
overclocking	O
of	O
Xeon	B-Device
(	O
socket	O
771	O
)	O
processors	O
when	O
used	O
in	O
the	O
correct	O
(	O
socket	B-Device
775	I-Device
)	O
motherboards	O
.	O
</s>
<s>
Some	O
overclockers	O
have	O
managed	O
quite	O
substantial	O
overclocks	O
such	O
as	O
4.023GHz	O
on	O
a	O
Xeon	B-Device
X5492	O
for	O
a	O
total	O
overclock	O
of	O
just	O
over	O
18%	O
.	O
</s>
