<s>
The	O
Am486	B-Device
is	O
a	O
80486-class	O
family	O
of	O
computer	O
processors	B-General_Concept
that	O
was	O
produced	O
by	O
AMD	O
in	O
the	O
1990s	O
.	O
</s>
<s>
Intel	O
beat	O
AMD	O
to	O
market	O
by	O
nearly	O
four	O
years	O
,	O
but	O
AMD	O
priced	O
its	O
40MHz	O
486	B-General_Concept
at	O
or	O
below	O
Intel	O
's	O
price	O
for	O
a	O
33MHz	O
chip	O
,	O
offering	O
about	O
20%	O
better	O
performance	O
for	O
the	O
same	O
price	O
.	O
</s>
<s>
While	O
competing	O
486	B-General_Concept
chips	O
,	O
such	O
as	O
those	O
from	O
Cyrix	O
,	O
benchmarked	O
lower	O
than	O
the	O
equivalent	O
Intel	O
chip	O
,	O
AMD	O
's	O
486	B-General_Concept
matched	O
Intel	O
's	O
performance	O
on	O
a	O
clock-for-clock	O
basis	O
.	O
</s>
<s>
While	O
the	O
Am386	B-Device
was	O
primarily	O
used	O
by	O
small	O
computer	O
manufacturers	O
,	O
the	O
Am486DX	O
,	O
DX2	O
,	O
and	O
SX2	O
chips	O
gained	O
acceptance	O
among	O
larger	O
computer	O
manufacturers	O
,	O
especially	O
Acer	O
and	O
Compaq	O
,	O
in	O
the	O
1994	O
time	O
frame	O
.	O
</s>
<s>
AMD	O
's	O
higher	O
clocked	O
486	B-General_Concept
chips	O
provided	O
superior	O
performance	O
to	O
many	O
of	O
the	O
early	O
Pentium	B-General_Concept
chips	O
,	O
especially	O
the	O
60	O
and	O
66MHz	O
launch	O
products	O
.	O
</s>
<s>
While	O
equivalent	O
Intel	B-Device
80486DX4	I-Device
chips	O
were	O
priced	O
high	O
and	O
required	O
a	O
minor	O
socket	O
modification	O
,	O
AMD	O
priced	O
low	O
.	O
</s>
<s>
Intel	O
's	O
DX4	B-Device
chips	O
initially	O
had	O
twice	O
the	O
cache	O
of	O
the	O
AMD	O
chips	O
,	O
giving	O
them	O
a	O
slight	O
performance	O
edge	O
,	O
but	O
AMD	O
's	O
DX4-100	O
usually	O
cost	O
less	O
than	O
Intel	O
's	O
DX2-66	O
.	O
</s>
<s>
The	O
enhanced	O
Am486	B-Device
series	O
supported	O
new	O
features	O
like	O
extended	O
power-saving	O
modes	O
and	O
an	O
8	O
KiB	O
Write-Back	O
L1-Cache	O
,	O
later	O
versions	O
even	O
got	O
an	O
upgrade	O
to	O
16	O
KiB	O
Write-Back	O
L1-Cache	O
.	O
</s>
<s>
The	O
133MHz	O
AMD	B-Device
Am5x86	I-Device
was	O
a	O
higher	O
clocked	O
enhanced	O
Am486	B-Device
.	O
</s>
<s>
Model	O
FSB	B-Architecture
Clock	O
speed	O
VCore	B-Device
L1-Cache	O
Introduced	O
Am486	B-Device
DX-25	O
25	O
MHz	O
5	O
V	O
8	O
KiB	O
WT	O
Am486	B-Device
DX-33	O
33	O
MHz	O
Am486	B-Device
DX-40	O
40	O
MHz	O
Apr	O
1993	O
Am486	B-Device
SX-33	O
33	O
MHz	O
Am486	B-Device
SX-40	O
40	O
MHz	O
Am486	B-Device
DE2-66	O
33	O
MHz	O
66	O
MHz	O
3.3	O
V	O
1996(? )	O
</s>
