<s>
Socket	B-General_Concept
3	I-General_Concept
was	O
a	O
series	O
of	O
CPU	B-General_Concept
sockets	I-General_Concept
for	O
various	O
x86	B-Operating_System
microprocessors	I-Operating_System
.	O
</s>
<s>
It	O
was	O
sometimes	O
found	O
alongside	O
a	O
secondary	O
socket	O
designed	O
for	O
a	O
math	O
coprocessor	B-General_Concept
chip	O
,	O
such	O
as	O
the	O
487	O
.	O
</s>
<s>
Socket	B-General_Concept
3	I-General_Concept
resulted	O
from	O
Intel	O
's	O
creation	O
of	O
lower	O
voltage	O
microprocessors	B-Architecture
.	O
</s>
<s>
An	O
upgrade	O
to	O
Socket	B-Device
2	I-Device
,	O
it	O
rearranged	O
the	O
pin	O
layout	O
.	O
</s>
<s>
Socket	B-General_Concept
3	I-General_Concept
is	O
compatible	O
with	O
168-pin	O
socket	O
CPUs	O
.	O
</s>
<s>
Socket	B-General_Concept
3	I-General_Concept
was	O
a	O
237-pin	O
low	B-Algorithm
insertion	I-Algorithm
force	I-Algorithm
(	O
LIF	O
)	O
or	O
zero	B-General_Concept
insertion	I-General_Concept
force	I-General_Concept
(	O
ZIF	B-General_Concept
)	O
19×19	O
pin	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
(	O
PGA	O
)	O
socket	O
suitable	O
for	O
the	O
3.3V	O
and	O
5V	O
,	O
25	O
–	O
50MHz	O
Intel	B-General_Concept
486	I-General_Concept
SX	O
,	O
486	B-General_Concept
DX	I-General_Concept
,	O
486	B-Device
DX2	I-Device
,	O
486	B-Device
DX4	I-Device
,	O
486	B-Device
OverDrive	I-Device
and	O
Pentium	B-Device
OverDrive	I-Device
processors	O
as	O
well	O
as	O
AMD	B-Device
Am486	I-Device
,	O
Am5x86	B-Device
and	O
Cyrix	B-Device
Cx5x86	I-Device
processors	O
.	O
</s>
