<s>
LGA	B-Device
775	I-Device
(	O
land	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
775	O
)	O
,	O
also	O
known	O
as	O
Socket	B-Device
T	I-Device
,	O
is	O
an	O
Intel	O
desktop	O
CPU	B-General_Concept
socket	I-General_Concept
.	O
</s>
<s>
Unlike	O
PGA	B-Algorithm
CPU	B-General_Concept
sockets	I-General_Concept
,	O
such	O
as	O
its	O
predecessor	O
Socket	B-Device
478	I-Device
,	O
LGA	B-Device
775	I-Device
has	O
no	O
socket	O
holes	O
;	O
instead	O
,	O
it	O
has	O
775	O
protruding	O
pins	O
which	O
touch	O
contact	O
points	O
on	O
the	O
underside	O
of	O
the	O
processor	B-General_Concept
(	O
CPU	B-General_Concept
)	O
.	O
</s>
<s>
The	O
socket	O
was	O
superseded	O
by	O
the	O
LGA	B-Device
1156	I-Device
(	O
Socket	B-Device
H	I-Device
)	O
and	O
LGA	B-Device
1366	I-Device
(	O
Socket	B-Device
B	I-Device
)	O
sockets	O
.	O
</s>
<s>
For	O
LGA	B-Device
775	I-Device
,	O
the	O
distance	O
between	O
the	O
screw-holes	O
for	O
the	O
heatsink	O
is	O
72	O
mm	O
.	O
</s>
<s>
Such	O
heat-sinks	O
are	O
not	O
interchangeable	O
with	O
heatsinks	O
for	O
sockets	O
that	O
have	O
a	O
distance	O
of	O
75	O
mm	O
,	O
such	O
as	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>
LGA	B-Device
775	I-Device
was	O
the	O
last	O
Intel	O
socket	O
for	O
desktops	O
for	O
which	O
third-party	O
companies	O
manufactured	O
chipsets	O
.	O
</s>
<s>
Nvidia	O
was	O
the	O
last	O
third-party	O
manufacturer	O
of	O
LGA	B-Device
775	I-Device
chipsets	O
(	O
its	O
final	O
product	O
was	O
MCP7A	O
family	O
,	O
marketed	O
as	O
GeForce	O
9300/9400	O
,	O
launched	O
in	O
October	O
2008	O
)	O
,	O
as	O
other	O
third-parties	O
discontinued	O
their	O
products	O
earlier	O
.	O
</s>
<s>
PT880	O
Pro	O
also	O
supports	O
AGP	B-Architecture
and	O
PCI-Express	O
at	O
the	O
same	O
time	O
,	O
but	O
only	O
one	O
port	O
can	O
be	O
used	O
at	O
a	O
time	O
.	O
</s>
<s>
The	O
force	O
from	O
the	O
load	O
plate	O
ensures	O
that	O
the	O
processor	B-General_Concept
is	O
completely	O
level	O
,	O
giving	O
the	O
CPU	B-General_Concept
's	O
upper	O
surface	O
optimal	O
contact	O
with	O
the	O
heat	O
sink	O
or	O
cold-water	O
block	O
fixed	O
onto	O
the	O
top	O
of	O
the	O
CPU	B-General_Concept
to	O
carry	O
away	O
the	O
heat	O
generated	O
by	O
the	O
CPU	B-General_Concept
.	O
</s>
<s>
With	O
LGA	B-Device
775	I-Device
,	O
the	O
heat	O
dissipation	O
interface	O
is	O
connected	O
directly	O
to	O
the	O
motherboard	O
on	O
four	O
points	O
,	O
compared	O
with	O
the	O
two	O
connections	O
of	O
the	O
Socket	B-Device
370	I-Device
and	O
the	O
"	O
clamshell	O
"	O
four-point	O
connection	O
of	O
the	O
Socket	B-Device
478	I-Device
.	O
</s>
<s>
LGA	B-Device
775	I-Device
was	O
announced	O
to	O
have	O
better	O
heat	O
dissipation	O
properties	O
than	O
the	O
Socket	B-Device
478	I-Device
it	O
was	O
designed	O
to	O
replace	O
,	O
but	O
the	O
Prescott	O
core	O
CPUs	O
(	O
in	O
their	O
early	O
incarnations	O
)	O
ran	O
much	O
hotter	O
than	O
the	O
previous	O
Northwood-core	O
Pentium	B-General_Concept
4	I-General_Concept
CPUs	O
,	O
and	O
this	O
initially	O
neutralized	O
the	O
benefits	O
of	O
better	O
heat	O
transfer	O
.	O
</s>
<s>
However	O
,	O
the	O
later	O
Core	B-Device
2	I-Device
processors	O
run	O
at	O
much	O
lower	O
temperatures	O
than	O
the	O
Prescott	O
CPUs	O
they	O
replaced	O
.	O
</s>
<s>
Processors	O
with	O
lower	O
TDP	O
and	O
clock	O
speeds	O
only	O
used	O
Thermal	O
Interface	O
Compound	O
in	O
between	O
the	O
die	O
and	O
the	O
integrated	O
heat	O
spreader	O
(	O
IHS	O
)	O
,	O
while	O
processors	O
with	O
higher	O
TDP	O
and	O
clock	O
speeds	O
have	O
the	O
die	O
soldered	O
directly	O
to	O
the	O
IHS	O
,	O
allowing	O
for	O
better	O
heat	O
transfer	O
between	O
the	O
CPU	B-General_Concept
and	O
the	O
integrated	O
heat	O
spreader	O
.	O
</s>
<s>
All	O
LGA	B-Device
775	I-Device
processors	O
have	O
the	O
following	O
mechanical	O
maximum	O
load	O
limits	O
which	O
should	O
not	O
be	O
exceeded	O
during	O
heat	O
sink	O
assembly	O
,	O
shipping	O
conditions	O
,	O
or	O
standard	O
use	O
.	O
</s>
<s>
Load	O
above	O
those	O
limits	O
could	O
crack	O
the	O
processor	B-General_Concept
die	O
and	O
make	O
it	O
unusable	O
.	O
</s>
<s>
The	O
transition	O
to	O
the	O
LGA	B-Algorithm
packaging	O
has	O
lowered	O
those	O
load	O
limits	O
,	O
which	O
are	O
smaller	O
than	O
the	O
load	O
limits	O
of	O
Socket	B-Device
478	I-Device
processors	O
but	O
they	O
are	O
bigger	O
than	O
Socket	B-Device
370	I-Device
,	O
Socket	B-Device
423	I-Device
and	O
Socket	O
A	O
processors	O
,	O
which	O
were	O
fragile	O
.	O
</s>
<s>
Compatibility	O
is	O
quite	O
variable	O
,	O
as	O
earlier	O
chipsets	O
(	O
Intel	O
915	O
and	O
below	O
)	O
tend	O
to	O
support	O
only	O
single	O
core	O
NetBurst	B-Device
Pentium	B-General_Concept
4	I-General_Concept
and	O
Celeron	B-Device
CPUs	O
at	O
an	O
FSB	O
of	O
533/800	O
MT/s	O
.	O
</s>
<s>
Intel	O
945	O
)	O
commonly	O
support	O
both	O
single	O
core	O
Pentium	O
4-based	O
CPUs	O
as	O
well	O
as	O
dual	O
core	O
Pentium	B-Device
D	I-Device
processors	O
.	O
</s>
<s>
Other	O
chipsets	O
have	O
varying	O
levels	O
of	O
CPU	B-General_Concept
support	O
,	O
generally	O
following	O
the	O
release	O
of	O
contemporary	O
CPUs	O
,	O
as	O
LGA	B-Device
775	I-Device
CPU	B-General_Concept
support	O
is	O
a	O
complicated	O
mixture	O
of	O
chipset	O
capability	O
,	O
voltage	O
regulator	O
limitations	O
and	O
BIOS	O
support	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
newer	O
Q45	O
chipset	O
does	O
not	O
support	O
NetBurst-based	O
CPUs	O
such	O
as	O
the	O
Pentium	B-General_Concept
4	I-General_Concept
,	O
Pentium	B-Device
D	I-Device
,	O
Pentium	B-Device
Extreme	I-Device
Edition	I-Device
,	O
and	O
Celeron	B-Device
D	O
.	O
</s>
<s>
Some	O
Core	B-Device
2	I-Device
and	O
other	O
Socket	B-Device
775	I-Device
processors	O
are	O
capable	O
of	O
hardware-accelerated	O
virtualization	O
.	O
</s>
