<s>
The	O
Apple	B-Device
A9X	I-Device
is	O
a	O
64-bit	B-Device
ARM	B-Architecture
architecture-based	I-Architecture
system	B-Architecture
on	I-Architecture
a	I-Architecture
chip	I-Architecture
(	O
SoC	O
)	O
designed	O
by	O
Apple	O
Inc	O
.	O
</s>
<s>
It	O
first	O
appeared	O
in	O
the	O
iPad	B-Device
Pro	I-Device
,	O
which	O
was	O
announced	O
on	O
September	O
9	O
,	O
2015	O
and	O
was	O
released	O
on	O
November	O
11	O
,	O
2015	O
.	O
</s>
<s>
The	O
A9X	B-Device
has	O
the	O
M9	O
motion	B-Device
coprocessor	I-Device
embedded	O
in	O
it	O
,	O
something	O
not	O
seen	O
in	O
previous	O
chip	O
generations	O
.	O
</s>
<s>
The	O
A9X	B-Device
features	O
an	O
Apple-designed	O
64-bit	B-Device
ARMv8-A	O
dual-core	O
CPU	O
called	O
"	O
Twister	O
"	O
.	O
</s>
<s>
Unlike	O
the	O
A9	O
,	O
the	O
A9X	B-Device
does	O
not	O
contain	O
an	O
L3	B-General_Concept
cache	I-General_Concept
due	O
to	O
its	O
significant	O
DRAM	O
bandwidth	O
.	O
</s>
<s>
The	O
A9X	B-Device
is	O
paired	O
with	O
4	O
GB	O
of	O
LPDDR4	O
memory	O
in	O
the	O
12.9	O
"	O
iPad	B-Device
Pro	I-Device
and	O
2	O
GB	O
of	O
LPDDR4	O
memory	O
in	O
the	O
9.7	O
"	O
iPad	B-Device
Pro	I-Device
with	O
a	O
total	O
bandwidth	O
of	O
51.2	O
GB/s	O
.	O
</s>
<s>
The	O
RAM	O
is	O
not	O
included	O
in	O
the	O
A9X	B-Device
package	O
unlike	O
its	O
sibling	O
,	O
the	O
A9	O
.	O
</s>
<s>
The	O
A9X	B-Device
uses	O
the	O
same	O
NAND	O
interface	O
as	O
the	O
A9	O
,	O
which	O
uses	O
an	O
Apple-designed	O
NVMe-based	O
controller	O
that	O
communicates	O
over	O
a	O
PCIe	O
connection	O
.	O
</s>
<s>
The	O
iPad	B-Device
Pro	I-Device
's	O
NAND	O
design	O
is	O
more	O
akin	O
to	O
a	O
PC-class	O
SSD	B-Device
than	O
embedded	O
flash	O
memory	O
common	O
on	O
mobile	O
devices	O
.	O
</s>
<s>
This	O
gives	O
the	O
iPad	B-Device
Pro	I-Device
a	O
significant	O
storage	O
performance	O
advantage	O
over	O
competitors	O
which	O
often	O
use	O
mSATA	O
or	O
eMMC	O
to	O
connect	O
to	O
their	O
storage	O
systems	O
.	O
</s>
<s>
The	O
A9X	B-Device
has	O
video	O
codec	O
encoding	O
support	O
for	O
H.264	B-Application
.	O
</s>
<s>
It	O
has	O
decoding	O
support	O
for	O
HEVC	B-Algorithm
,	O
H.264	B-Application
,	O
MPEG‑4	B-Application
,	O
and	O
Motion	B-Application
JPEG	I-Application
.	O
</s>
