<s>
Gekko	B-Device
is	O
a	O
superscalar	B-General_Concept
out-of-order	O
32-bit	O
PowerPC	B-Architecture
microprocessor	B-Architecture
custom-made	O
by	O
IBM	O
in	O
2000	O
for	O
Nintendo	O
to	O
use	O
as	O
the	O
CPU	B-General_Concept
in	O
their	O
sixth	B-Application
generation	I-Application
game	I-Application
console	I-Application
,	O
the	O
GameCube	B-Application
,	O
and	O
later	O
the	O
Triforce	B-Device
Arcade	I-Device
Board	I-Device
.	O
</s>
<s>
Gekko	B-Device
's	O
role	O
in	O
the	O
game	O
system	O
was	O
to	O
facilitate	O
game	O
scripting	O
,	O
Artificial	B-Application
Intelligence	I-Application
,	O
physics	O
and	O
collision	O
detection	O
,	O
custom	O
graphics	O
lighting	O
effects	O
and	O
geometry	O
such	O
as	O
smooth	O
transformations	O
,	O
and	O
moving	O
graphics	O
data	O
through	O
the	O
system	O
.	O
</s>
<s>
The	O
project	O
was	O
announced	O
in	O
1999	O
when	O
IBM	O
and	O
Nintendo	O
agreed	O
to	O
a	O
dollar	O
contract	O
(	O
IBM	O
's	O
largest	O
ever	O
single	O
order	O
)	O
for	O
a	O
CPU	B-General_Concept
running	O
at	O
approximately	O
400	O
MHz	O
.	O
</s>
<s>
IBM	O
chose	O
to	O
modify	O
their	O
existing	O
PowerPC	B-Device
750CXe	I-Device
processor	O
to	O
suit	O
Nintendo	O
's	O
needs	O
,	O
such	O
as	O
tight	O
and	O
balanced	O
operation	O
alongside	O
the	O
"	O
Flipper	O
"	O
graphics	B-Architecture
processor	I-Architecture
.	O
</s>
<s>
The	O
customization	O
was	O
to	O
the	O
bus	O
architecture	O
,	O
DMA	B-General_Concept
,	O
compression	O
and	O
floating	B-General_Concept
point	I-General_Concept
unit	I-General_Concept
which	O
support	O
a	O
special	O
set	O
of	O
SIMD	B-Device
instructions	O
.	O
</s>
<s>
The	O
CPU	B-General_Concept
made	O
ground	O
work	O
for	O
custom	O
lighting	O
and	O
geometry	O
effects	O
and	O
could	O
burst	O
compressed	O
data	O
directly	O
to	O
the	O
GPU	B-Architecture
.	O
</s>
<s>
The	O
Gekko	B-Device
is	O
considered	O
to	O
be	O
the	O
direct	O
ancestor	O
to	O
the	O
Broadway	B-Device
processor	O
,	O
also	O
designed	O
and	O
manufactured	O
by	O
IBM	O
,	O
that	O
powers	O
the	B-Operating_System
Wii	I-Operating_System
console	O
.	O
</s>
<s>
7	O
stages	O
long	O
Floating	B-General_Concept
Point	I-General_Concept
Unit	I-General_Concept
–	O
64-bit	O
double-precision	O
FPU	B-General_Concept
,	O
usable	O
as	O
2	O
×	O
32-bit	O
SIMD	B-Device
for	O
1.9	O
single-precision	O
GFLOPS	O
performance	O
using	O
the	O
Multiply	B-Algorithm
–	I-Algorithm
accumulate	I-Algorithm
operation	I-Algorithm
.	O
</s>
<s>
The	O
SIMD	B-Device
is	O
often	O
found	O
under	O
the	O
denomination	O
"	O
paired	O
singles.	O
"	O
</s>
<s>
On-chip	B-General_Concept
Cache	I-General_Concept
–	O
64	O
KB	O
8-way	O
associative	O
L1	B-General_Concept
cache	I-General_Concept
(	O
32/32	O
KB	O
instruction/data	O
)	O
.	O
</s>
<s>
180	B-Algorithm
nm	I-Algorithm
IBM	O
six-layer	O
,	O
copper-wire	O
process	O
.	O
</s>
<s>
1.8	O
V	O
for	O
logic	O
and	O
I/O	B-General_Concept
.	O
</s>
