<s>
The	O
Silicon	O
Graphics	O
Prism	O
is	O
a	O
series	O
of	O
visualization	B-Application
computer	O
systems	O
developed	O
and	O
manufactured	O
by	O
Silicon	O
Graphics	O
(	O
SGI	O
)	O
.	O
</s>
<s>
Released	O
in	O
April	O
2005	O
,	O
the	O
Prism	O
's	O
basic	O
system	O
architecture	O
is	O
based	O
on	O
the	O
Altix	B-Architecture
3000	I-Architecture
servers	O
,	O
but	O
with	O
graphics	O
hardware	O
.	O
</s>
<s>
The	O
Prism	O
uses	O
the	O
Linux	B-Application
operating	I-Application
system	I-Application
and	O
the	O
OpenGL	B-Application
software	O
library	O
.	O
</s>
<s>
Three	O
models	O
of	O
the	O
SGI	B-Device
Prism	I-Device
are	O
Power	O
,	O
Team	O
and	O
Extreme	O
levels	O
.	O
</s>
<s>
The	O
Power	O
level	O
supports	O
two	O
to	O
eight	O
Itanium	O
2	O
processors	O
,	O
up	O
to	O
96	O
GB	O
of	O
memory	O
and	O
two	O
to	O
four	O
graphics	B-General_Concept
pipelines	I-General_Concept
.	O
</s>
<s>
The	O
Team	O
level	O
supports	O
8	O
to	O
16	O
Itanium	O
2	O
processors	O
,	O
up	O
to	O
192	O
GB	O
of	O
memory	O
and	O
four	O
to	O
eight	O
graphics	B-General_Concept
pipelines	I-General_Concept
.	O
</s>
<s>
The	O
Extreme	O
level	O
supports	O
16	O
to	O
256	O
Itanium	O
2	O
processors	O
,	O
up	O
to	O
3	O
TB	O
of	O
memory	O
and	O
4	O
to	O
16	O
graphics	B-General_Concept
pipelines	I-General_Concept
.	O
</s>
<s>
The	O
graphics	B-General_Concept
pipelines	I-General_Concept
for	O
the	O
Prism	O
are	O
ATI	B-Application
FireGL	I-Application
cards	O
based	O
on	O
either	O
the	O
R350	O
or	O
R420	O
GPUs	B-Architecture
.	O
</s>
