<s>
The	O
AMD	B-Device
K8	I-Device
Hammer	O
,	O
also	O
code-named	O
SledgeHammer	O
,	O
is	O
a	O
computer	O
processor	O
microarchitecture	B-General_Concept
designed	O
by	O
AMD	O
as	O
the	O
successor	O
to	O
the	O
AMD	B-Architecture
K7	I-Architecture
Athlon	I-Architecture
microarchitecture	B-General_Concept
.	O
</s>
<s>
The	O
K8	B-Device
was	O
the	O
first	O
implementation	O
of	O
the	O
AMD64	B-Device
64-bit	B-Device
extension	O
to	O
the	O
x86	B-Operating_System
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
.	O
</s>
<s>
Processors	O
based	O
on	O
the	O
K8	B-Device
core	O
include	O
:	O
</s>
<s>
The	O
K8	B-Device
core	O
is	O
very	O
similar	O
to	O
the	O
K7	B-Architecture
.	O
</s>
<s>
The	O
most	O
radical	O
change	O
is	O
the	O
integration	O
of	O
the	O
AMD64	B-Device
instructions	O
and	O
an	O
on-chip	O
memory	O
controller	O
.	O
</s>
<s>
The	O
memory	O
controller	O
drastically	O
reduces	O
memory	O
latency	O
and	O
is	O
largely	O
responsible	O
for	O
most	O
of	O
the	O
performance	O
gains	O
from	O
K7	B-Architecture
to	O
K8	B-Device
.	O
</s>
<s>
It	O
is	O
perceived	O
by	O
the	O
PC	O
community	O
that	O
after	O
the	O
use	O
of	O
the	O
codename	O
K8	B-Device
for	O
the	O
Athlon	B-Architecture
64	O
processor	O
family	O
,	O
AMD	O
no	O
longer	O
uses	O
K-nomenclatures	O
(	O
which	O
originally	O
stood	O
for	O
Kryptonite	O
)	O
since	O
no	O
K-nomenclature	O
naming	O
convention	O
beyond	O
K8	B-Device
has	O
appeared	O
in	O
official	O
AMD	O
documents	O
and	O
press	O
releases	O
after	O
the	O
beginning	O
of	O
2005	O
.	O
</s>
<s>
AMD	O
now	O
refers	O
to	O
the	O
codename	O
K8	B-Device
processors	O
as	O
the	O
Family	O
0Fh	O
processors	O
.	O
</s>
<s>
10h	O
and	O
0Fh	O
refer	O
to	O
the	O
main	O
result	O
of	O
the	O
CPUID	B-Architecture
x86	B-Operating_System
processor	O
instruction	O
.	O
</s>
<s>
In	O
hexadecimal	O
numbering	O
,	O
0F(h )	O
(	O
where	O
the	O
h	O
represents	O
hexadecimal	O
numbering	O
)	O
equals	O
the	O
decimal	B-Application
number	O
15	O
,	O
and	O
10(h )	O
equals	O
the	O
decimal	B-Application
number	O
16	O
.	O
</s>
