<s>
The	O
Cray	B-Device
C90	I-Device
series	O
(	O
initially	O
named	O
the	O
Y-MP	O
C90	O
)	O
was	O
a	O
vector	B-Operating_System
processor	I-Operating_System
supercomputer	B-Architecture
launched	O
by	O
Cray	O
Research	O
in	O
1991	O
.	O
</s>
<s>
The	O
C90	O
was	O
a	O
development	O
of	O
the	O
Cray	B-Device
Y-MP	I-Device
architecture	O
.	O
</s>
<s>
The	O
C90	O
series	O
used	O
the	O
same	O
Model	O
E	O
IOS	O
(	O
Input/Output	O
Subsystem	O
)	O
and	O
UNICOS	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
as	O
the	O
earlier	O
Y-MP	O
Model	O
E	O
.	O
</s>
<s>
Maximum	O
SRAM	B-Architecture
memory	O
was	O
between	O
1	O
and	O
8	O
GB	O
,	O
depending	O
on	O
model	O
.	O
</s>
<s>
The	O
successor	O
system	O
was	O
the	O
Cray	B-Device
T90	I-Device
.	O
</s>
