<s>
LGA	B-Device
1151	I-Device
,	O
also	O
known	O
as	O
Socket	B-General_Concept
H4	O
,	O
is	O
a	O
type	O
of	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
socket	B-General_Concept
for	O
Intel	O
desktop	O
processors	B-General_Concept
which	O
comes	O
in	O
two	O
distinct	O
versions	O
:	O
the	O
first	O
revision	O
which	O
supports	O
both	O
Intel	O
's	O
Skylake	B-Architecture
and	O
Kaby	B-Device
Lake	I-Device
CPUs	O
,	O
and	O
the	O
second	O
revision	O
which	O
supports	O
Coffee	B-Device
Lake	I-Device
CPUs	O
exclusively	O
.	O
</s>
<s>
LGA	B-Device
1151	I-Device
is	O
designed	O
as	O
a	O
replacement	O
for	O
the	O
LGA	B-Device
1150	I-Device
(	O
known	O
as	O
Socket	B-Device
H3	I-Device
)	O
.	O
</s>
<s>
LGA	B-Device
1151	I-Device
has	O
1151	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>
Most	O
motherboards	O
for	O
the	O
first	O
revision	O
of	O
the	O
socket	B-General_Concept
support	O
solely	O
DDR4	O
memory	O
,	O
a	O
lesser	O
number	O
support	O
DDR3(L )	O
memory	O
,	O
and	O
the	O
least	O
number	O
have	O
slots	O
for	O
both	O
DDR4	O
or	O
DDR3(L )	O
but	O
only	O
one	O
memory	O
type	O
can	O
be	O
installed	O
.	O
</s>
<s>
Some	O
have	O
UniDIMM	B-General_Concept
support	O
,	O
enabling	O
either	O
type	O
of	O
memory	O
to	O
be	O
placed	O
in	O
the	O
same	O
DIMM	B-General_Concept
,	O
rather	O
than	O
having	O
separate	O
DDR3	O
and	O
DDR4	O
DIMMs	B-General_Concept
.	O
</s>
<s>
The	O
second	O
revision	O
socket	B-General_Concept
motherboards	O
support	O
only	O
DDR4	O
memory	O
.	O
</s>
<s>
Skylake	B-Architecture
,	O
Kaby	B-Device
Lake	I-Device
,	O
and	O
Coffee	B-Device
Lake	I-Device
chipsets	O
support	O
VT-d	O
,	O
Intel	B-Application
Rapid	I-Application
Storage	I-Application
Technology	I-Application
,	O
Intel	B-Device
Clear	I-Device
Video	I-Device
Technology	I-Device
,	O
and	O
Intel	O
Wireless	O
Display	O
Technology	O
(	O
an	O
appropriate	O
CPU	O
is	O
required	O
)	O
.	O
</s>
<s>
Most	O
motherboards	O
with	O
the	O
LGA	B-Device
1151	I-Device
socket	B-General_Concept
support	O
varying	O
video	O
outputs	O
(	O
DVI	B-Application
,	O
HDMI	B-Protocol
1.4	O
or	O
DisplayPort	B-Protocol
1.2	O
–	O
depending	O
on	O
the	O
model	O
)	O
.	O
</s>
<s>
VGA	B-Protocol
output	O
is	O
optional	O
since	O
Intel	O
dropped	O
support	O
for	O
this	O
video	O
interface	O
starting	O
with	O
Skylake	B-Architecture
.	O
</s>
<s>
HDMI	B-Protocol
2.0	O
(	O
4K	B-Architecture
@60Hz	O
)	O
is	O
only	O
supported	O
on	O
motherboards	O
equipped	O
with	O
Intel	O
's	O
Alpine	O
Ridge	O
Thunderbolt	O
controller	O
.	O
</s>
<s>
Skylake	B-Architecture
,	O
Kaby	B-Device
Lake	I-Device
,	O
and	O
Coffee	B-Device
Lake	I-Device
chipsets	O
do	O
not	O
support	O
the	O
legacy	O
conventional	B-Protocol
PCI	I-Protocol
interface	O
;	O
however	O
,	O
motherboard	O
vendors	O
may	O
implement	O
it	O
using	O
external	O
chips	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-Algorithm
1156	O
,	O
LGA	B-Algorithm
1155	O
,	O
LGA	B-Algorithm
1150	O
,	O
LGA1151	B-Device
and	O
LGA	B-Device
1200	I-Device
.	O
</s>
<s>
Intel	O
officially	O
states	O
that	O
Skylake	B-Architecture
's	O
and	O
Kaby	B-Device
Lake	I-Device
's	O
integrated	B-General_Concept
memory	I-General_Concept
controllers	I-General_Concept
(	O
IMC	O
)	O
support	O
DDR3L	O
memory	O
modules	O
only	O
rated	O
at	O
1.35V	O
and	O
DDR4	O
at	O
1.2V	O
,	O
which	O
led	O
to	O
the	O
speculation	O
that	O
higher	O
voltages	O
of	O
DDR3	O
modules	O
could	O
damage	O
or	O
destroy	O
the	O
IMC	O
and	O
processor	O
.	O
</s>
<s>
Meanwhile	O
,	O
ASRock	O
,	O
Gigabyte	O
,	O
and	O
Asus	O
guarantee	O
that	O
their	O
Skylake	B-Architecture
and	O
Kaby	B-Device
Lake	I-Device
DDR3	O
motherboards	O
support	O
DDR3	O
modules	O
rated	O
at	O
1.5	O
and	O
1.65V	O
.	O
</s>
<s>
There	O
is	O
no	O
equivalent	O
Kaby	B-Device
Lake	I-Device
chipset	O
analogous	O
to	O
the	O
H110	O
chipset	O
.	O
</s>
<s>
Four	O
additional	O
PCH	B-Device
PCI-E	O
lanes	O
in	O
Kaby	B-Device
Lake	I-Device
chipsets	O
are	O
reserved	O
for	O
implementing	O
an	O
M.2	O
slot	O
to	O
support	O
Intel	B-Device
Optane	I-Device
Memory	I-Device
.	O
</s>
<s>
Otherwise	O
,	O
corresponding	O
Kaby	B-Device
Lake	I-Device
and	O
Skylake	B-Architecture
chipsets	O
are	O
practically	O
the	O
same	O
.	O
</s>
<s>
Light	O
blue	O
indicates	O
a	O
difference	O
between	O
comparable	O
Skylake	B-Architecture
and	O
Kaby	B-Device
Lake	I-Device
chipsets	O
.	O
</s>
<s>
B250	O
Q250	O
H270	O
Q270	O
Z270	O
OverclockingNoCPU	O
(	O
multiplier	O
+	O
BCLK	O
)	O
+	O
GPU	O
+	O
RAM	O
Skylake	B-Architecture
CPUs	O
support	O
colspan	O
=	O
"	O
5	O
"	O
Coffee	B-Device
Lake	I-Device
CPUs	O
support	O
colspan	O
=	O
"	O
5	O
"	O
Memory	O
support	O
DDR4	O
(	O
max	O
.	O
</s>
<s>
The	O
LGA	B-Device
1151	I-Device
socket	B-General_Concept
was	O
revised	O
for	O
the	O
Coffee	B-Device
Lake	I-Device
generation	O
CPUs	O
and	O
comes	O
along	O
with	O
the	O
Intel	O
300-series	O
chipsets	O
.	O
</s>
<s>
While	O
physical	O
dimensions	O
remain	O
unchanged	O
,	O
the	O
updated	O
socket	B-General_Concept
reassigns	O
some	O
reserved	O
pins	O
,	O
adding	O
power	O
and	O
ground	O
lines	O
to	O
support	O
the	O
requirements	O
of	O
6-core	O
and	O
8-core	O
CPUs	O
.	O
</s>
<s>
The	O
new	O
socket	B-General_Concept
also	O
relocates	O
the	O
processor	O
detection	O
pin	O
,	O
breaking	O
compatibility	O
with	O
earlier	O
processors	B-General_Concept
and	O
motherboards	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
desktop	O
Coffee	B-Device
Lake	I-Device
CPUs	O
are	O
officially	O
not	O
compatible	O
with	O
the	O
100	O
(	O
original	O
Skylake	B-Architecture
)	O
and	O
200	O
(	O
Kaby	B-Device
Lake	I-Device
)	O
series	O
chipsets	O
.	O
</s>
<s>
Similarly	O
,	O
300	O
series	O
chipsets	O
officially	O
only	O
support	O
Coffee	B-Device
Lake	I-Device
and	O
are	O
not	O
compatible	O
with	O
Skylake	B-Architecture
and	O
Kaby	B-Device
Lake	I-Device
CPUs	O
.	O
</s>
<s>
Socket	B-Device
1151	I-Device
rev	O
2	O
is	O
sometimes	O
also	O
referred	O
to	O
as	O
"	O
1151-2	O
"	O
.	O
</s>
<s>
Like	O
with	O
Kaby	B-Device
Lake	I-Device
chipsets	O
,	O
four	O
additional	O
PCH	B-Device
PCI-E	O
lanes	O
in	O
Coffee	B-Device
Lake	I-Device
chipsets	O
are	O
reserved	O
for	O
implementing	O
an	O
M.2	O
slot	O
to	O
support	O
Intel	B-Device
Optane	I-Device
Memory	I-Device
.	O
</s>
