<s>
The	O
Macintosh	B-Device
IIvx	I-Device
is	O
a	O
personal	B-Device
computer	I-Device
designed	O
,	O
manufactured	O
and	O
sold	O
by	O
Apple	O
Computer	O
from	O
October	O
1992	O
to	O
October	O
1993	O
.	O
</s>
<s>
It	O
is	O
the	O
last	O
of	O
the	O
Macintosh	B-Device
II	I-Device
family	I-Device
of	O
Macintosh	B-Device
computers	O
.	O
</s>
<s>
The	O
IIvx	O
was	O
introduced	O
at	O
the	O
same	O
time	O
as	O
the	O
Macintosh	B-Device
IIvi	I-Device
,	O
with	O
both	O
models	O
using	O
the	O
same	O
metal	O
case	O
design	O
as	O
the	O
earlier	O
Performa	B-Device
600	I-Device
and	O
Performa	B-Device
600CD	I-Device
.	O
</s>
<s>
Like	O
the	O
Performa	B-Device
600CD	I-Device
,	O
the	O
IIvx	O
could	O
be	O
equipped	O
with	O
an	O
internal	O
double-speed	O
CD-ROM	B-Device
drive	O
.	O
</s>
<s>
Adding	O
the	O
CD-ROM	B-Device
and	O
upgrading	O
to	O
of	O
main	O
memory	O
and	O
video	O
memory	O
increased	O
the	O
price	O
to	O
US$3	O
,	O
219	O
,	O
which	O
Macworld	O
deemed	O
to	O
be	O
"	O
the	O
best	O
CD-ROM	B-Device
drive	O
bargain	O
ever	O
offered	O
"	O
.	O
</s>
<s>
The	O
Mac	O
IIvx	O
began	O
its	O
life	O
in	O
development	O
as	O
a	O
proof-of-concept	O
to	O
see	O
how	O
an	O
internal	O
CD-ROM	B-Device
drive	O
could	O
be	O
added	O
to	O
a	O
Mac	O
.	O
</s>
<s>
But	O
after	O
Apple	O
CEO	O
John	O
Sculley	O
gave	O
a	O
speech	O
at	O
MacWorld	O
Tokyo	O
promising	O
a	O
Mac	O
with	O
a	O
CD-ROM	B-Device
drive	O
,	O
the	O
IIvx	O
was	O
rushed	O
into	O
production	O
.	O
</s>
<s>
Several	O
shortcuts	O
were	O
taken	O
in	O
its	O
design	O
;	O
most	O
notably	O
,	O
its	O
32MHz	O
Motorola	B-Device
68030	I-Device
processor	O
was	O
crippled	O
by	O
a	O
16MHz	O
bus	O
,	O
making	O
it	O
slightly	O
slower	O
than	O
the	O
popular	O
but	O
aging	O
Macintosh	B-Device
IIci	I-Device
.	O
</s>
<s>
The	O
Macintosh	B-Device
IIvi	I-Device
(	O
a	O
slower	O
version	O
of	O
the	O
IIvx	O
with	O
a	O
16MHz	O
processor	O
)	O
was	O
introduced	O
at	O
the	O
same	O
time	O
in	O
some	O
markets	O
(	O
though	O
not	O
the	O
United	O
States	O
)	O
but	O
discontinued	O
four	O
months	O
later	O
.	O
</s>
<s>
Representing	O
the	O
high	O
end	O
of	O
the	O
original	O
Performa	B-Device
lineup	O
,	O
the	O
Performa	B-Device
600	I-Device
was	O
also	O
based	O
on	O
the	O
same	O
architecture	O
.	O
</s>
<s>
The	O
IIvx	O
was	O
one	O
of	O
the	O
only	O
Macintosh	B-Device
II	I-Device
models	O
with	O
a	O
32K	O
L2	O
cache	O
,	O
following	O
the	O
IIfx	B-Device
's	O
onboard	O
32K	O
cache	O
and	O
the	O
IIci	B-Device
's	O
optional	O
32K	O
cache	O
card	O
;	O
neither	O
the	O
IIvi	O
nor	O
the	O
Performa	B-Device
600	I-Device
supported	O
an	O
L2	O
cache	O
,	O
despite	O
their	O
similarities	O
to	O
the	O
IIvx	O
.	O
</s>
<s>
The	O
IIvx	O
was	O
sold	O
with	O
hard	O
drives	O
ranging	O
in	O
capacity	O
from	O
40	O
to	O
,	O
three	O
NuBus	B-Device
slots	O
,	O
and	O
a	O
Processor	B-Device
Direct	I-Device
Slot	I-Device
.	O
</s>
<s>
The	O
Macintosh	B-Device
IIvx	I-Device
uses	O
the	O
same	O
case	O
as	O
the	O
Performa	B-Device
600	I-Device
,	O
Centris	B-Device
650	I-Device
,	O
Quadra	B-Device
650	I-Device
(	O
the	O
speed-bumped	O
refresh	O
of	O
the	O
Centris	B-Device
650	I-Device
)	O
,	O
and	O
Power	B-Device
Macintosh	I-Device
7100	I-Device
.	O
</s>
<s>
The	O
IIvx	O
can	O
be	O
upgraded	O
to	O
Centris/Quadra	O
650	O
by	O
swapping	O
the	O
logic	O
board	O
.	O
</s>
<s>
While	O
the	O
IIvx	O
shares	O
the	O
model	O
designation	O
of	O
other	O
Macintosh	B-Device
II	I-Device
computers	O
,	O
Apple	O
originally	O
intended	O
the	O
IIvx	O
to	O
be	O
the	O
first	O
computer	O
in	O
the	O
Macintosh	B-Device
Centris	I-Device
line	O
.	O
</s>
<s>
According	O
to	O
Apple	O
,	O
their	O
lawyers	O
were	O
unable	O
to	O
complete	O
the	O
trademark	O
check	O
on	O
the	O
"	O
Centris	B-Device
"	O
name	O
in	O
time	O
for	O
the	O
release	O
of	O
this	O
computer	O
so	O
it	O
ended	O
up	O
being	O
sold	O
the	O
IIvx	O
.	O
</s>
<s>
Machines	O
bearing	O
the	O
Centris	B-Device
name	O
were	O
introduced	O
a	O
few	O
months	O
later	O
.	O
</s>
<s>
Notably	O
the	O
Macintosh	B-Device
Centris	I-Device
650	I-Device
was	O
released	O
four	O
months	O
after	O
the	O
IIvx	O
for	O
$250	O
less	O
,	O
immediately	O
rendering	O
the	O
IIvx	O
obsolete	O
,	O
since	O
the	O
650	O
was	O
powered	O
by	O
the	O
68040	B-Device
CPU	O
.	O
</s>
<s>
Because	O
of	O
increasing	O
competition	O
from	O
Dell	O
and	O
other	O
PC	O
manufacturers	O
,	O
prices	O
of	O
the	O
IIvx	O
continued	O
to	O
fall	O
quickly	O
;	O
by	O
the	O
end	O
of	O
June	O
1993	O
,	O
the	O
price	O
of	O
the	O
5/80	O
+	O
CD-ROM	B-Device
configuration	O
had	O
dropped	O
to	O
$1	O
,	O
799	O
,	O
about	O
half	O
its	O
original	O
price	O
.	O
</s>
