<s>
AMD	B-Device
PowerNow	I-Device
!	I-Device
</s>
<s>
is	O
AMD	O
's	O
dynamic	B-General_Concept
frequency	I-General_Concept
scaling	I-General_Concept
and	O
power	O
saving	O
technology	O
for	O
laptop	B-Device
processors	O
.	O
</s>
<s>
The	O
CPU	B-General_Concept
's	O
clock	O
speed	O
and	O
VCore	B-Device
are	O
automatically	O
decreased	O
when	O
the	O
computer	O
is	O
under	O
low	O
load	O
or	O
idle	O
,	O
to	O
save	O
battery	O
power	O
,	O
reduce	O
heat	O
and	O
noise	O
.	O
</s>
<s>
The	O
lifetime	O
of	O
the	O
CPU	B-General_Concept
is	O
also	O
extended	O
because	O
of	O
reduced	O
electromigration	O
,	O
which	O
varies	O
exponentially	O
with	O
temperature	O
.	O
</s>
<s>
The	O
technology	O
is	O
a	O
concept	O
similar	O
to	O
Intel	O
's	O
SpeedStep	B-Device
technology	O
.	O
</s>
<s>
The	O
adaptation	O
of	O
PowerNow	B-Device
!	I-Device
</s>
<s>
for	O
AMD	O
's	O
desktop	O
CPUs	O
is	O
called	O
Cool'n'Quiet	B-Device
.	O
</s>
<s>
Newer	O
Opterons	B-General_Concept
also	O
use	O
an	O
adaptation	O
of	O
PowerNow	B-Device
!	I-Device
</s>
<s>
AMD	O
has	O
supplied	O
and	O
supported	O
drivers	O
for	O
its	O
PowerNow	B-Device
!	I-Device
</s>
<s>
Athlon	B-Architecture
XP-M	I-Architecture
-	O
some	O
models	O
.	O
</s>
