<s>
AMD	O
Cool'n'Quiet	B-Device
is	O
a	O
CPU	B-General_Concept
dynamic	B-General_Concept
frequency	I-General_Concept
scaling	I-General_Concept
and	O
power	O
saving	O
technology	O
introduced	O
by	O
AMD	O
with	O
its	O
Athlon	O
XP	O
processor	O
line	O
.	O
</s>
<s>
The	O
aim	O
of	O
this	O
technology	O
is	O
to	O
reduce	O
overall	O
power	O
consumption	O
and	O
lower	O
heat	O
generation	O
,	O
allowing	O
for	O
slower	O
(	O
thus	O
quieter	O
)	O
cooling	B-Application
fan	I-Application
operation	O
.	O
</s>
<s>
The	O
objectives	O
of	O
cooler	O
and	O
quieter	O
result	O
in	O
the	O
name	O
Cool'n'Quiet	B-Device
.	O
</s>
<s>
The	O
technology	O
is	O
similar	O
to	O
Intel	O
's	O
SpeedStep	B-Device
and	O
AMD	O
's	O
own	O
PowerNow	O
!,	O
which	O
were	O
developed	O
with	O
the	O
aim	O
of	O
increasing	O
laptop	O
battery	O
life	O
by	O
reducing	O
power	O
consumption	O
.	O
</s>
<s>
Due	O
to	O
their	O
different	O
usage	O
,	O
Cool'n'Quiet	B-Device
refers	O
to	O
desktop	O
and	O
server	O
chips	O
,	O
while	O
PowerNow	B-Device
!	I-Device
</s>
<s>
This	O
technology	O
was	O
also	O
introduced	O
on	O
"	O
e-stepping	O
"	O
Opterons	B-General_Concept
,	O
however	O
it	O
is	O
called	O
Optimized	O
Power	O
Management	O
,	O
which	O
is	O
essentially	O
a	O
re-tooled	O
Cool'n'Quiet	B-Device
scheme	O
designed	O
to	O
work	O
with	O
registered	B-General_Concept
memory	I-General_Concept
.	O
</s>
<s>
Cool'n'Quiet	B-Device
is	O
fully	O
supported	O
in	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
from	O
version	O
2.6.18	O
onward	O
(	O
using	O
the	O
powernow-k8	O
driver	O
)	O
and	O
FreeBSD	O
from	O
6.0-CURRENT	O
onward	O
.	O
</s>
<s>
In-order	O
to	O
take	O
advantage	O
of	O
Cool'n'Quiet	B-Device
Technology	O
in	O
Microsoft	O
's	O
Operating	O
Systems	O
:	O
</s>
<s>
Unlike	O
Windows	O
XP	O
,	O
Windows	O
Vista	O
only	O
supports	O
Cool'n'Quiet	B-Device
on	O
motherboards	O
that	O
support	O
ACPI	B-Device
2.0	O
or	O
later	O
.	O
</s>
<s>
With	O
earlier	O
versions	O
of	O
Windows	O
,	O
processor	O
drivers	O
along	O
with	O
Cool'n'Quiet	B-Device
software	O
also	O
need	O
to	O
be	O
installed	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
CPU	B-General_Concept
drivers	O
offered	O
by	O
AMD	O
,	O
several	O
motherboard	O
manufacturers	O
have	O
released	O
software	O
to	O
give	O
the	O
end	O
user	O
more	O
control	O
over	O
the	O
Cool	B-Device
'	I-Device
n	I-Device
 '	I-Device
Quiet	I-Device
feature	O
,	O
as	O
well	O
as	O
the	O
other	O
new	O
features	O
of	O
AMD	O
processors	O
and	O
chipsets	O
.	O
</s>
<s>
Using	O
these	O
applications	O
,	O
one	O
can	O
even	O
control	O
the	O
CPU	B-General_Concept
voltage	O
explicitly	O
.	O
</s>
