<s>
Penryn	B-Device
is	O
the	O
code	O
name	O
of	O
a	O
processor	O
from	O
Intel	O
that	O
is	O
sold	O
in	O
varying	O
configurations	O
as	O
Core	B-Device
2	I-Device
Solo	O
,	O
Core	B-Device
2	I-Device
Duo	O
,	O
Core	B-Device
2	I-Device
Quad	O
,	O
Pentium	B-Device
and	O
Celeron	B-Device
.	O
</s>
<s>
During	O
development	O
,	O
Penryn	B-Device
was	O
the	O
Intel	O
code	O
name	O
for	O
the	O
2007/2008	O
"	O
Tick	O
"	O
of	O
Intel	O
's	O
Tick-Tock	B-Device
cycle	I-Device
which	O
shrunk	O
Merom	B-Device
to	O
45	B-Algorithm
nanometers	I-Algorithm
as	O
CPUID	O
model	O
23	O
.	O
</s>
<s>
The	O
term	O
"	O
Penryn	B-Device
"	O
is	O
sometimes	O
used	O
to	O
refer	O
to	O
all	O
45nm	B-Algorithm
chips	O
with	O
the	O
Core	B-Device
architecture	I-Device
.	O
</s>
<s>
Chips	O
with	O
Penryn	B-Device
architecture	O
come	O
in	O
two	O
sizes	O
,	O
with	O
6	O
MB	O
and	O
3	O
MB	O
L2	O
cache	O
.	O
</s>
<s>
Low	O
power	O
versions	O
of	O
Penryn	B-Device
are	O
known	O
as	O
the	O
Penryn-L	O
;	O
these	O
are	O
single-core	O
processors	O
.	O
</s>
<s>
The	O
Penryn-QC	O
quad-cores	O
are	O
made	O
from	O
two	O
chips	O
with	O
two	O
cores	O
and	O
6	O
MB	O
of	O
cache	O
per	O
chip	O
.	O
</s>
<s>
The	O
desktop	O
version	O
of	O
Penryn	B-Device
is	O
Wolfdale	B-Device
and	O
the	O
dual-socket	O
server	O
version	O
is	O
Wolfdale-DP	O
.	O
</s>
<s>
Penryn-QC	O
is	O
related	O
to	O
Yorkfield	B-Device
on	O
the	O
desktop	O
and	O
Harpertown	O
in	O
servers	O
.	O
</s>
<s>
The	O
MP	O
server	O
Dunnington	O
chip	O
is	O
a	O
more	O
distant	O
relative	O
based	O
on	O
a	O
different	O
chip	O
but	O
using	O
the	O
same	O
45nm	B-Algorithm
Core	B-Device
microarchitecture	I-Device
.	O
</s>
<s>
Penryn	B-Device
was	O
replaced	O
by	O
the	O
Nehalem-based	O
Arrandale	O
(	O
dual	O
core	B-Device
)	O
and	O
Clarksfield	B-Device
(	O
quad	O
core	B-Device
)	O
.	O
</s>
<s>
The	O
successor	O
to	O
the	O
Merom	B-Device
core	B-Device
for	O
the	O
Core	B-Device
2	I-Device
Duo	O
T5000/T7000	O
series	O
mobile	O
processors	O
,	O
code-named	O
Penryn	B-Device
,	O
debuted	O
on	O
the	O
45	O
nanometer	O
process	O
.	O
</s>
<s>
Many	O
details	O
about	O
Penryn	B-Device
appeared	O
at	O
the	O
April	O
2007	O
Intel	O
Developer	O
Forum	O
.	O
</s>
<s>
Intel	O
's	O
new	O
45nm	B-Algorithm
Penryn-based	O
Core	B-Device
2	I-Device
Duo	O
and	O
Core	B-Device
2	I-Device
Extreme	O
processors	O
were	O
released	O
on	O
January	O
6	O
,	O
2008	O
.	O
</s>
<s>
The	O
T9500	O
offered	O
a	O
2.6GHz	O
clock	O
rate	O
,	O
higher	O
than	O
all	O
but	O
the	O
Extreme	O
Edition	O
of	O
the	O
Merom	B-Device
range	O
,	O
and	O
6MB	O
(	O
rather	O
than	O
4MB	O
)	O
of	O
Level	O
2	O
Cache	O
.	O
</s>
<s>
Important	O
advances	O
included	O
the	O
addition	O
of	O
new	O
instructions	O
including	O
SSE4	B-General_Concept
(	O
also	O
known	O
as	O
Penryn	B-Device
New	O
Instructions	O
)	O
and	O
new	O
fabrication	O
materials	O
;	O
most	O
significantly	O
a	O
hafnium-based	O
high-k	B-Algorithm
dielectric	I-Algorithm
.	O
</s>
<s>
All	O
SL9xxx	O
,	O
SP9xxx	O
,	O
P9xxx	O
,	O
T9xxx	O
and	O
X9xxx	O
processors	O
are	O
Penryn	B-Device
with	O
the	O
full	O
6	O
MB	O
L2	O
cache	O
enabled	O
,	O
while	O
P7xxx	O
,	O
P8xxx	O
and	O
T8xxx	O
can	O
be	O
either	O
Penryn-3M	O
or	O
Penryn	B-Device
with	O
only	O
3	O
MB	O
cache	O
enabled	O
.	O
</s>
<s>
They	O
are	O
indistinguishable	O
by	O
software	O
,	O
but	O
Penryn	B-Device
uses	O
product	O
code	O
80576	O
.	O
</s>
<s>
While	O
it	O
is	O
used	O
in	O
desktop	O
computers	O
and	O
has	O
an	O
E8xxx	O
name	O
,	O
it	O
uses	O
the	O
same	O
packaging	O
as	O
mobile	O
CPUs	O
and	O
is	O
therefore	O
considered	O
a	O
Penryn	B-Device
and	O
not	O
Wolfdale	B-Device
.	O
</s>
<s>
On	O
desktops	O
,	O
Penryn	B-Device
pairs	O
with	O
the	O
2007	O
desktop	O
Bearlake	O
chipset	O
series	O
,	O
some	O
of	O
whose	O
models	O
include	O
an	O
increase	O
in	O
bus	O
performance	O
(	O
connection	O
to	O
the	O
northbridge	O
,	O
etc	O
.	O
)	O
</s>
<s>
In	O
notebooks	O
and	O
other	O
mobile	O
equipment	O
,	O
Penryn	B-Device
initially	O
paired	O
with	O
the	O
mobile	O
Crestline	O
chipset	O
series	O
which	O
supports	O
DDR2	O
but	O
not	O
DDR3	O
,	O
(	O
although	O
when	O
Penryn	B-Device
was	O
released	O
,	O
Intel	O
believed	O
future	O
DDR3	O
support	O
would	O
benefit	O
mobile	O
equipment	O
's	O
power	O
-	O
and	O
heat-constrained	O
environments	O
)	O
.	O
</s>
<s>
Mobile	O
Penryns	B-Device
were	O
later	O
paired	O
with	O
the	O
Cantiga	O
chipset	O
series	O
which	O
(	O
among	O
other	O
enhancements	O
)	O
added	O
DDR3	O
support	O
.	O
</s>
<s>
The	O
smaller	O
(	O
82mm²	O
instead	O
of	O
107mm²	O
)	O
Penryn-3M	O
is	O
used	O
in	O
mobile	O
processors	O
with	O
an	O
L2	O
Cache	O
3	O
MB	O
or	O
less	O
as	O
a	O
successor	O
to	O
Merom-2M	O
.	O
</s>
<s>
The	O
entry	O
level	O
Penryn-3M	O
Core	B-Device
2	I-Device
processor	O
is	O
the	O
T6xxx	O
series	O
,	O
with	O
2	O
MB	O
L2	O
Cache	O
and	O
begins	O
with	O
the	O
T6400	O
at	O
a	O
clock	O
rate	O
of	O
2GHz	O
.	O
</s>
<s>
Other	O
Penryn-3M	O
based	O
processor	O
series	O
are	O
Celeron	B-Device
T3xxx	O
,	O
Pentium	B-Device
T4xxx	O
,	O
as	O
well	O
as	O
most	O
Core	B-Device
2	I-Device
Duo	O
SU9xxx	O
,	O
P7xxx	O
,	O
P8xxx	O
,	O
T8xxx	O
processors	O
.	O
</s>
<s>
In	O
September	O
2009	O
,	O
Intel	O
introduced	O
new	O
Consumer	B-Device
Ultra-Low	I-Device
Voltage	I-Device
processors	O
based	O
on	O
Penryn-3M	O
,	O
as	O
Celeron	B-Device
SU2xxx	O
series	O
,	O
Pentium	B-Device
SU4xxx	O
series	O
and	O
Core	B-Device
2	I-Device
Duo	O
SU7xxx	O
series	O
,	O
with	O
1	O
,	O
2	O
and	O
3	O
MB	O
of	O
active	O
L2	O
cache	O
.	O
</s>
<s>
Like	O
the	O
earlier	O
Core	B-Device
2	I-Device
Duo	O
SU9xxx	O
series	O
,	O
they	O
are	O
always	O
soldered	O
on	O
using	O
a	O
BGA956	O
package	O
and	O
have	O
a	O
TDP	O
of	O
only	O
10W	O
.	O
</s>
<s>
Penryn-L	O
does	O
not	O
actually	O
seem	O
to	O
be	O
a	O
separate	O
chip	O
but	O
only	O
a	O
version	O
of	O
Penryn-3M	O
with	O
a	O
single	O
core	B-Device
enabled	O
.	O
</s>
<s>
Penryn-L	O
is	O
used	O
in	O
the	O
ultra-low	O
voltage	O
Core	B-Device
2	I-Device
SU3xxx	O
,	O
the	O
standard	O
voltage	O
Celeron	B-Device
9xx	O
and	O
the	O
CULV	B-Device
Celeron	B-Device
7xx	O
and	O
Pentium	B-Device
SU2xxx	O
series	O
.	O
</s>
<s>
The	O
Celeron	B-Device
versions	O
have	O
only	O
1	O
MB	O
active	O
L2	O
cache	O
,	O
Pentium	B-Device
versions	O
have	O
2	O
MB	O
.	O
</s>
<s>
In	O
August	O
2008	O
Intel	O
released	O
their	O
first	O
two	O
quad-core	O
processors	O
for	O
notebooks	O
,	O
the	O
Core	B-Device
2	I-Device
Quad	O
Q9100	O
and	O
Core	B-Device
2	I-Device
Extreme	O
QX9300	O
.	O
</s>
<s>
As	O
these	O
require	O
more	O
power	O
(	O
45W	O
)	O
and	O
cooling	O
than	O
other	O
Penryn	B-Device
processors	O
they	O
are	O
not	O
automatically	O
compatible	O
with	O
all	O
Centrino	O
2	O
notebooks	O
.	O
</s>
<s>
Microsoft	O
has	O
released	O
a	O
microcode	O
update	O
(	O
KB2493989	O
)	O
for	O
Windows	O
7	O
that	O
addresses	O
several	O
stability	O
issues	O
on	O
selected	O
"	O
Penryn	B-Device
"	O
and	O
"	O
Merom	B-Device
"	O
CPUs	O
.	O
</s>
