<s>
The	O
SGI	B-Device
Tezro	I-Device
is	O
a	O
series	O
of	O
high-end	O
computer	B-Device
workstations	I-Device
sold	O
by	O
SGI	O
from	O
2003	O
until	O
2006	O
.	O
</s>
<s>
Using	O
MIPS	O
CPUs	O
and	O
running	O
IRIX	B-Operating_System
,	O
it	O
is	O
the	O
immediate	O
successor	O
to	O
the	O
SGI	B-Device
Octane	I-Device
line	O
.	O
</s>
<s>
The	O
Tezro	B-Device
was	O
released	O
alongside	O
the	O
SGI	O
Onyx4	O
and	O
rack-mountable	O
Tezros	O
share	O
many	O
components	O
with	O
it	O
,	O
including	O
plastic	O
skins	O
.	O
</s>
<s>
Tezro	B-Device
marked	O
the	O
return	O
of	O
the	O
original	O
cube	O
logo	O
to	O
SGI	O
machines	O
.	O
</s>
<s>
It	O
was	O
replaced	O
in	O
2008	O
by	O
the	O
SGI	B-Device
Virtu	I-Device
product	O
line	O
.	O
</s>
<s>
Similar	O
to	O
other	O
SGI	O
systems	O
,	O
the	O
Tezro	B-Device
uses	O
a	O
non-blocking	O
crossbar	O
interconnect	O
to	O
connect	O
all	O
subsystems	O
together	O
.	O
</s>
<s>
Tezro	B-Device
is	O
based	O
on	O
SGI	O
's	O
Origin	O
3000	O
architecture	O
.	O
</s>
<s>
ARCS	B-Device
is	O
provided	O
as	O
the	O
boot	O
firmware	B-Application
,	O
as	O
with	O
other	O
SGI	O
computer	O
systems	O
of	O
that	O
era	O
.	O
</s>
<s>
Tezro	B-Device
systems	O
use	O
two	O
or	O
four	O
64-bit	O
MIPS	O
R16000	O
microprocessors	B-Architecture
.	O
</s>
<s>
For	O
example	O
,	O
a	O
quad-R16K/700MHz	O
(	O
8	O
MB	O
L2	O
)	O
board	O
from	O
a	O
CX-Brick	O
will	O
work	O
in	O
a	O
Tezro	B-Device
;	O
likewise	O
,	O
other	O
boards	O
up	O
to	O
the	O
same	O
quad-1GHz	O
edition	O
.	O
</s>
<s>
The	O
Tezro	B-Device
shipped	O
with	O
512	O
MB	O
of	O
DDR	O
SDRAM	O
.	O
</s>
<s>
It	O
can	O
be	O
expanded	O
using	O
proprietary	O
DIMMs	B-General_Concept
.	O
</s>
<s>
The	O
tower	O
version	O
can	O
hold	O
up	O
to	O
8	O
GB	O
of	O
main	O
memory	O
total	O
,	O
and	O
the	O
rack	O
version	O
can	O
hold	O
up	O
to	O
8	O
GB	O
per	O
brick	O
(	O
2	O
bricks	O
can	O
be	O
directly	O
linked	O
by	O
NUMAlink	B-Architecture
cables	O
,	O
or	O
up	O
to	O
8	O
with	O
the	O
use	O
of	O
a	O
NUMAlink	B-Architecture
Router	O
)	O
.	O
</s>
<s>
Tezro	B-Device
supports	O
the	O
VPro	B-General_Concept
V10	O
and	O
V12	O
graphics	O
options	O
.	O
</s>
<s>
Dual-channel	O
options	O
were	O
produced	O
for	O
the	O
desktop	O
variants	O
allowing	O
up	O
to	O
two	O
1920x1200	O
displays	O
,	O
while	O
dual-head	O
,	O
dual-channel	O
were	O
available	O
for	O
the	O
rack	O
version	O
,	O
allowing	O
a	O
fully	O
equipped	O
rackmount	O
Tezro	B-Device
to	O
drive	O
up	O
to	O
four	O
1920x1200	O
displays	O
at	O
once	O
.	O
</s>
<s>
Tower	O
systems	O
shipped	O
with	O
analog	O
audio	O
output	O
as	O
standard	O
,	O
and	O
PCI	B-Architecture
cards	O
provide	O
audio	O
capabilities	O
(	O
including	O
2-channel	O
24-bit	O
AES	O
and	O
8-channel	O
ADAT	O
connectors	O
)	O
on	O
rack-mountable	O
versions	O
.	O
</s>
<s>
The	O
number	O
of	O
available	O
64-bit	O
PCI	B-Architecture
slots	O
included	O
in	O
a	O
Tezro	B-Device
system	O
depends	O
upon	O
the	O
number	O
of	O
CPUs	O
installed	O
in	O
the	O
system	O
:	O
</s>
<s>
All	O
PCI	B-Architecture
slots	O
in	O
each	O
Tezro	B-Device
model	O
are	O
3.3V	O
card	O
slots	O
.	O
</s>
<s>
A	O
single	O
U160	B-Architecture
SCSI	I-Architecture
connector	O
was	O
produced	O
for	O
attaching	O
external	O
peripherals	O
,	O
as	O
was	O
an	O
optional	O
FireWire	B-Protocol
card	O
.	O
</s>
