<s>
iMac	B-Device
is	O
a	O
family	O
of	O
all-in-one	B-Device
Mac	B-Device
desktop	B-Device
computers	I-Device
designed	O
and	O
built	O
by	O
Apple	O
Inc	O
.	O
</s>
<s>
In	O
its	O
original	O
form	O
,	O
the	O
iMac	B-Device
G3	I-Device
had	O
a	O
gumdrop	O
or	O
egg-shaped	O
look	O
,	O
with	O
a	O
CRT	B-Device
monitor	I-Device
,	O
mainly	O
enclosed	O
by	O
a	O
colored	O
,	O
translucent	O
plastic	O
case	O
,	O
which	O
was	O
refreshed	O
early	O
on	O
with	O
a	O
sleeker	O
design	O
notable	O
for	O
its	O
slot-loaded	O
optical	O
drive	O
.	O
</s>
<s>
The	O
second	O
major	O
revision	O
,	O
the	O
iMac	B-Device
G4	I-Device
,	O
moved	O
the	O
design	O
to	O
a	O
hemispherical	O
base	O
containing	O
all	O
the	O
main	O
components	O
and	O
an	O
LCD	B-Device
monitor	O
on	O
a	O
freely	O
moving	O
arm	O
attached	O
to	O
it	O
.	O
</s>
<s>
The	O
third	O
and	O
fourth	O
major	O
revisions	O
,	O
the	O
iMac	B-Device
G5	I-Device
and	O
the	O
Intel	B-Device
iMac	I-Device
respectively	O
,	O
placed	O
all	O
the	O
components	O
immediately	O
behind	O
the	O
display	B-Device
,	O
creating	O
a	O
slim	O
unified	O
design	O
that	O
tilts	O
only	O
up	O
and	O
down	O
on	O
a	O
simple	O
metal	O
base	O
.	O
</s>
<s>
The	O
seventh	O
major	O
revision	O
(	O
late	O
2012	O
)	O
uses	O
a	O
different	O
display	B-Device
unit	O
,	O
omits	O
the	O
SuperDrive	B-Device
,	O
and	O
uses	O
different	O
production	O
techniques	O
from	O
the	O
older	O
unibody	O
versions	O
.	O
</s>
<s>
It	O
also	O
includes	O
a	O
dual	O
microphone	O
setup	O
and	O
includes	O
solid-state	B-Device
drive	I-Device
(	O
SSD	B-Device
)	O
or	O
hard	B-Device
disk	I-Device
storage	I-Device
,	O
or	O
an	O
Apple	O
Fusion	B-Device
Drive	I-Device
,	O
a	O
hybrid	O
of	O
solid-state	O
and	O
hard	B-Device
disk	I-Device
drives	I-Device
.	O
</s>
<s>
This	O
version	O
of	O
the	O
iMac	B-Device
was	O
announced	O
in	O
October	O
2012	O
,	O
with	O
the	O
version	O
released	O
in	O
November	O
and	O
the	O
version	O
in	O
December	O
;	O
these	O
were	O
refreshed	O
in	O
September	O
2013	O
,	O
with	O
new	O
Haswell	B-Device
processors	O
,	O
faster	O
graphics	O
,	O
faster	O
and	O
larger	O
SSD	B-Device
options	O
and	O
802.11ac	O
Wi-Fi	O
cards	O
.	O
</s>
<s>
In	O
October	O
2014	O
,	O
a	O
major	O
revision	O
of	O
the	O
iMac	B-Device
was	O
announced	O
,	O
whose	O
main	O
feature	O
is	O
a	O
"	O
Retina	B-Operating_System
5K	I-Operating_System
"	O
display	B-Device
at	O
a	O
resolution	O
of	O
5120	O
×	O
2880	O
pixels	O
.	O
</s>
<s>
The	O
new	O
model	O
also	O
includes	O
a	O
new	O
processor	B-General_Concept
,	O
graphics	B-Device
chip	I-Device
,	O
and	O
IO	O
,	O
along	O
with	O
several	O
new	O
storage	B-General_Concept
options	O
.	O
</s>
<s>
A	O
major	O
revision	O
of	O
the	O
iMac	B-Device
was	O
announced	O
in	O
October	O
2015	O
.	O
</s>
<s>
Its	O
main	O
feature	O
is	O
a	O
"	O
Retina	B-Operating_System
4K	B-Architecture
"	O
display	B-Device
at	O
a	O
resolution	O
of	O
4096	O
×	O
2304	O
pixels	O
.	O
</s>
<s>
It	O
has	O
the	O
same	O
new	O
processor	B-General_Concept
,	O
graphics	B-Device
chip	I-Device
,	O
and	O
I/O	B-General_Concept
as	O
the	O
27-inch	O
iMac	B-Device
,	O
along	O
with	O
several	O
new	O
storage	B-General_Concept
options	O
.	O
</s>
<s>
On	O
June	O
5	O
,	O
2017	O
,	O
Apple	O
announced	O
a	O
workstation-class	O
version	O
called	O
the	O
iMac	B-Device
Pro	I-Device
,	O
which	O
features	O
Intel	B-Device
Xeon	I-Device
processors	O
and	O
standard	O
SSD	B-Device
storage	B-General_Concept
.	O
</s>
<s>
It	O
shares	O
the	O
design	O
and	O
screen	O
of	O
the	O
5K	B-Device
iMac	B-Device
but	O
is	O
colored	O
in	O
Space	O
Gray	O
rather	O
than	O
silver	O
.	O
</s>
<s>
Apple	O
began	O
shipping	O
the	O
iMac	B-Device
Pro	I-Device
in	O
December	O
2017	O
.	O
</s>
<s>
The	O
iMac	B-Device
Pro	I-Device
was	O
discontinued	O
in	O
2021	O
.	O
</s>
<s>
On	O
April	O
20	O
,	O
2021	O
,	O
Apple	O
announced	O
a	O
24	O
"	O
iMac	B-Device
(	O
actual	O
diagonal	O
screen	O
size	O
is	O
23.5	O
in	O
.	O
)	O
</s>
<s>
with	O
an	O
Apple	B-Device
M1	I-Device
processor	B-General_Concept
,	O
its	O
first	O
as	O
part	O
of	O
its	O
transition	B-Device
to	I-Device
Apple	I-Device
silicon	I-Device
.	O
</s>
<s>
It	O
comes	O
in	O
7	O
colors	O
(	O
Silver	O
,	O
Blue	O
,	O
Green	O
,	O
Orange	O
,	O
Yellow	O
,	O
Purple	O
,	O
and	O
Pink	O
)	O
with	O
a	O
4.5K	O
Retina	B-Operating_System
display	I-Operating_System
.	O
</s>
<s>
On	O
the	O
base	O
configuration	O
,	O
the	O
M1	B-Device
iMacs	I-Device
come	O
with	O
two	O
Thunderbolt	B-Protocol
3/USB	O
4	O
ports	O
,	O
and	O
two	O
USB	B-Protocol
Type-C	O
3.1	O
Gen	O
2	O
ports	O
on	O
the	O
higher	O
configurations	O
.	O
</s>
<s>
The	O
announcement	O
of	O
the	O
iMac	B-Device
in	O
1998	O
was	O
a	O
source	O
of	O
controversy	O
and	O
anticipation	O
among	O
commentators	O
,	O
Mac	B-Device
fans	O
,	O
and	O
detractors	O
.	O
</s>
<s>
Opinions	O
were	O
divided	O
over	O
Apple	O
's	O
drastic	O
changes	O
to	O
the	O
Macintosh	B-Device
hardware	O
.	O
</s>
<s>
At	O
the	O
time	O
,	O
Apple	O
had	O
suffered	O
a	O
series	O
of	O
setbacks	O
as	O
consumers	O
increasingly	O
opted	O
for	O
Wintel	B-Device
(	O
Windows	O
PCs	O
with	O
Intel	O
CPUs	O
)	O
machines	O
instead	O
of	O
Apple	O
's	O
Performa	B-Device
models	O
.	O
</s>
<s>
Many	O
in	O
the	O
industry	O
thought	O
that	O
"	O
beleaguered	O
"	O
Apple	O
would	O
soon	O
be	O
forced	O
to	O
start	O
selling	O
computers	O
with	O
a	O
custom	O
interface	O
built	O
on	O
top	O
of	O
one	O
or	O
more	O
potential	O
operating	O
system	O
bases	O
,	O
such	O
as	O
Taligent	B-Operating_System
,	O
Solaris	B-Application
,	O
or	O
Windows	B-Device
98	I-Device
.	O
</s>
<s>
The	O
designer	O
behind	O
iMac	B-Device
's	O
case	O
was	O
Jonathan	O
Ive	O
.	O
</s>
<s>
Ken	O
Segall	O
was	O
an	O
employee	O
at	O
an	O
L.A.	O
ad	O
agency	O
handling	O
Apple	O
's	O
account	O
who	O
came	O
up	O
with	O
the	O
name	O
"	O
iMac	B-Device
"	O
and	O
pitched	O
it	O
to	O
Steve	O
Jobs	O
.	O
</s>
<s>
After	O
Jobs	O
 '	O
death	O
,	O
Segall	O
claimed	O
Jobs	O
preferred	O
"	O
MacMan	O
"	O
for	O
the	O
name	O
of	O
the	O
computer	O
,	O
but	O
after	O
Segall	O
pitched	O
"	O
iMac	B-Device
"	O
to	O
him	O
twice	O
,	O
the	O
name	O
was	O
accepted	O
.	O
</s>
<s>
Apple	O
later	O
adopted	O
the	O
'	O
i	O
 '	O
prefix	O
across	O
its	O
consumer	O
hardware	O
and	O
software	O
lines	O
,	O
such	O
as	O
iPod	B-Device
,	O
iBook	B-Device
(	O
later	O
MacBook	O
)	O
,	O
iPhone	B-Device
,	O
iPad	B-Device
and	O
various	O
pieces	O
of	O
software	O
such	O
as	O
the	O
iLife	B-Application
,	O
iCloud	B-Application
suite	O
and	O
iWork	B-Application
and	O
the	O
company	O
's	O
media	O
player/store	O
,	O
iTunes	B-Operating_System
.	O
</s>
<s>
was	O
the	O
catch-phrase	O
in	O
a	O
popular	O
iMac	B-Device
commercial	O
narrated	O
by	O
actor	O
Jeff	O
Goldblum	O
.	O
</s>
<s>
Another	O
commercial	O
,	O
dubbed	O
"	O
Simplicity	O
Shootout	O
"	O
,	O
pitted	O
seven-year-old	O
Johann	O
Thomas	O
and	O
his	O
border	O
collie	O
Brodie	O
,	O
with	O
an	O
iMac	B-Device
,	O
against	O
Adam	O
Taggart	O
,	O
a	O
Stanford	O
University	O
MBA	B-Application
student	O
,	O
with	O
an	O
HP	O
Pavilion	O
8250	O
,	O
in	O
a	O
race	O
to	O
set	O
up	O
their	O
computers	O
.	O
</s>
<s>
By	O
2005	O
,	O
it	O
had	O
become	O
more	O
and	O
more	O
apparent	O
that	O
IBM	O
's	O
development	O
for	O
the	O
desktop	O
implementation	O
of	O
PowerPC	B-Architecture
was	O
grinding	O
to	O
a	O
halt	O
.	O
</s>
<s>
Apple	O
announced	O
at	O
the	O
Worldwide	O
Developers	O
Conference	O
that	O
it	O
would	O
be	O
switching	B-Device
the	I-Device
Macintosh	I-Device
to	I-Device
the	I-Device
x86	I-Device
architecture	I-Device
and	O
Intel	O
's	O
line	O
of	O
Core	O
processors	O
.	O
</s>
<s>
The	O
first	O
Intel-equipped	O
Macs	B-Device
were	O
unveiled	O
on	O
January	O
10	O
,	O
2006	O
:	O
the	O
Intel	B-Device
iMac	I-Device
and	O
the	O
introductory	O
MacBook	B-Device
Pro	I-Device
.	O
</s>
<s>
Within	O
nine	O
months	O
,	O
Apple	O
had	O
smoothly	O
transitioned	O
the	O
entire	O
Macintosh	B-Device
line	O
to	O
Intel	O
.	O
</s>
<s>
One	O
of	O
the	O
highly	O
touted	O
side	O
benefits	O
of	O
this	O
switch	O
was	O
the	O
ability	O
to	O
run	O
Windows	O
on	O
Mac	B-Device
hardware	O
.	O
</s>
<s>
On	O
July	O
27	O
,	O
2010	O
,	O
Apple	O
updated	O
its	O
line	O
of	O
iMacs	B-Device
to	O
feature	O
the	O
new	O
Intel	B-Device
Core	I-Device
"	O
i-series	O
"	O
processors	O
across	O
the	O
line	O
.	O
</s>
<s>
The	O
21.5	O
"	O
models	O
now	O
feature	O
the	O
Core	B-Device
i3	I-Device
processor	B-General_Concept
,	O
but	O
these	O
are	O
upgradable	O
to	O
the	O
Core	B-Device
i5	I-Device
.	O
</s>
<s>
The	O
high-end	O
27	O
"	O
features	O
a	O
Quad-Core	B-Device
i5	I-Device
processor	B-General_Concept
,	O
which	O
is	O
upgradable	O
to	O
a	O
Quad-Core	B-Device
i7	I-Device
.	O
</s>
<s>
On	O
this	O
date	O
,	O
Apple	O
also	O
announced	O
its	O
new	O
"	O
Apple	O
Magic	O
Trackpad	O
"	O
peripheral	O
,	O
a	O
trackpad	O
similar	O
to	O
that	O
of	O
the	O
MacBook	B-Device
Pro	I-Device
for	O
use	O
with	O
iMac	B-Device
or	O
any	O
other	O
Apple	O
computer	O
.	O
</s>
<s>
Apple	O
offers	O
an	O
option	O
to	O
use	O
a	O
solid-state	B-Device
drive	I-Device
instead	O
of	O
a	O
large	O
mechanical	O
drive	O
.	O
</s>
<s>
On	O
May	O
3	O
,	O
2011	O
,	O
Apple	O
updated	O
its	O
iMac	B-Device
line	O
with	O
the	O
introduction	O
of	O
Intel	B-Protocol
Thunderbolt	I-Protocol
technology	O
and	O
Intel	B-Device
Core	I-Device
i5	I-Device
and	O
i7	B-Device
Sandy	B-Device
Bridge	I-Device
processors	O
as	O
well	O
as	O
a	O
1	O
mega	O
pixel	O
high	O
definition	O
FaceTime	B-Protocol
camera	O
,	O
features	O
which	O
were	O
first	O
introduced	O
in	O
the	O
MacBook	B-Device
Pro	I-Device
line	O
in	O
February	O
2011	O
.	O
</s>
<s>
On	O
October	O
23	O
,	O
2012	O
,	O
a	O
new	O
iMac	B-Device
was	O
announced	O
(	O
for	O
a	O
November/December	O
release	O
)	O
with	O
a	O
substantially	O
thinner	O
edge	O
,	O
new	O
Apple	O
Fusion	B-Device
Drive	I-Device
,	O
faster	O
processors	O
(	O
Intel	B-Device
Core	I-Device
i5	I-Device
and	O
i7	B-Device
Ivy	B-Device
Bridge	I-Device
)	O
and	O
graphics	O
along	O
with	O
updates	O
to	O
the	O
ports	O
,	O
but	O
with	O
the	O
same	O
overall	O
depth	O
(	O
stand	O
depth	O
:	O
8	O
inches	O
(	O
20.3	O
cm	O
)	O
)	O
.	O
</s>
<s>
To	O
reduce	O
the	O
edge	O
,	O
the	O
SuperDrive	B-Device
was	O
removed	O
on	O
these	O
iMacs	B-Device
.	O
</s>
<s>
On	O
October	O
16	O
,	O
2014	O
,	O
a	O
new	O
version	O
of	O
the	O
27-inch	O
(	O
69	O
cm	O
)	O
iMac	B-Device
was	O
announced	O
,	O
whose	O
main	O
feature	O
is	O
a	O
"	O
Retina	B-Operating_System
5K	I-Operating_System
"	O
display	B-Device
at	O
a	O
resolution	O
of	O
5120	O
×	O
2880	O
pixels	O
.	O
</s>
<s>
The	O
new	O
model	O
also	O
includes	O
a	O
new	O
processor	B-General_Concept
,	O
graphics	B-Device
chip	I-Device
,	O
and	O
I/O	B-General_Concept
,	O
along	O
with	O
several	O
new	O
storage	B-General_Concept
options	O
.	O
</s>
<s>
This	O
computer	O
was	O
designed	O
with	O
professional	O
photographers	O
and	O
video	O
editors	O
in	O
mind	O
,	O
with	O
the	O
5K	B-Device
resolution	I-Device
allowing	O
4K	B-Architecture
video	I-Architecture
to	O
be	O
played	O
at	O
its	O
native	O
resolution	O
in	O
Final	O
Cut	O
Pro	O
,	O
with	O
room	O
for	O
toolbars	O
on	O
the	O
side	O
.	O
</s>
<s>
On	O
June	O
6	O
,	O
2017	O
,	O
Apple	O
’s	O
21.5-inch	O
iMac	B-Device
,	O
which	O
has	O
a	O
"	O
Retina	B-Operating_System
4K	B-Architecture
"	O
display	B-Device
at	O
a	O
resolution	O
of	O
4096	O
×	O
2304	O
pixels	O
,	O
and	O
the	O
latest	O
Intel	O
7th	O
generation	O
i5	B-Device
processor	B-General_Concept
,	O
was	O
announced	O
.	O
</s>
<s>
The	O
iMac	B-Device
has	O
Turbo	O
Boost	O
up	O
to	O
3.6	O
GHz	O
supported	O
,	O
and	O
a	O
1TB	O
hard	B-Device
drive	I-Device
.	O
</s>
<s>
Apple	O
’s	O
iMac	B-Device
with	O
4K	B-Architecture
display	I-Architecture
has	O
Intel	B-Device
Core	I-Device
i5	I-Device
quad-core	O
processor	B-General_Concept
with	O
3GHz	O
or	O
3.4	O
GHz	O
clock	O
speed	O
.	O
</s>
<s>
This	O
iMac	B-Device
has	O
options	O
of	O
1TB	O
hard	B-Device
drive	I-Device
or	O
1TB	O
Fusion	B-Device
Drive	I-Device
.	O
</s>
<s>
This	O
21.5-inch	O
iMac	B-Device
also	O
has	O
the	O
option	O
of	O
Radeon	O
Pro	O
555	O
with	O
2GB	O
of	O
video	O
RAM	O
for	O
graphics	O
or	O
a	O
Radeon	O
Pro	O
560	O
with	O
4GB	O
of	O
video	O
RAM	O
.	O
</s>
<s>
Apple	O
’s	O
27-inch	O
iMac	B-Device
with	O
the	O
5K	B-Device
display	B-Device
comes	O
with	O
the	O
quad-core	O
Intel	B-Device
Core	I-Device
i5	I-Device
processor	B-General_Concept
,	O
which	O
is	O
clocked	O
at	O
3.4	O
GHz	O
,	O
3.5	O
GHz	O
,	O
or	O
3.8	O
GHz	O
.	O
</s>
<s>
This	O
iMac	B-Device
supports	O
a	O
Turbo	O
boost	O
of	O
up	O
to	O
4.2Ghz	O
and	O
comes	O
with	O
8GB	O
RAM	O
option	O
.	O
</s>
<s>
In	O
March	O
2019	O
,	O
Apple	O
updated	O
the	O
iMac	B-Device
to	O
feature	O
9th-generation	O
Intel	B-Device
Core	I-Device
i9	I-Device
processors	O
and	O
Radeon	O
Vega	O
graphics	O
.	O
</s>
<s>
Unlike	O
most	O
other	O
Apple	O
releases	O
,	O
Apple	O
opted	O
not	O
to	O
announce	O
the	O
iMac	B-Device
at	O
an	O
event	O
;	O
instead	O
,	O
they	O
updated	O
the	O
specs	O
and	O
released	O
a	O
press	O
statement	O
.	O
</s>
<s>
For	O
the	O
first	O
time	O
,	O
the	O
iMac	B-Device
can	O
support	O
6-core	O
or	O
8-core	O
Intel	O
processors	O
.	O
</s>
<s>
On	O
August	O
4	O
,	O
2020	O
,	O
Apple	O
refreshed	O
the	O
iMac	B-Device
models	O
.	O
</s>
<s>
The	O
smaller	O
21.5-inch	O
model	O
was	O
updated	O
with	O
SSDs	B-Device
standard	O
.	O
</s>
<s>
The	O
27-inch	O
model	O
received	O
10th	O
generation	O
Intel	O
chips	O
,	O
a	O
T2	O
Security	O
chip	O
,	O
a	O
1080p	O
camera	O
,	O
studio-quality	O
microphone	O
,	O
an	O
option	O
for	O
nano-textured	O
glass	O
,	O
as	O
well	O
as	O
SSDs	B-Device
standard	O
.	O
</s>
<s>
The	O
27-inch	O
model	O
now	O
has	O
SSDs	B-Device
soldered	O
to	O
the	O
motherboard	O
,	O
which	O
means	O
the	O
storage	B-General_Concept
is	O
no	O
longer	O
replaceable	O
,	O
and	O
in	O
order	O
to	O
replace	O
a	O
hard	B-Device
drive	I-Device
the	O
entire	O
motherboard	O
must	O
be	O
replaced	O
and	O
any	O
data	O
on	O
the	O
drive	O
will	O
be	O
wiped	O
.	O
</s>
<s>
On	O
April	O
20	O
,	O
2021	O
,	O
Apple	O
announced	O
redesigned	O
iMacs	B-Device
with	O
a	O
24-inch	O
display	B-Device
,	O
new	O
colors	O
(	O
7	O
)	O
,	O
updated	O
cameras	O
,	O
and	O
the	O
inclusion	O
of	O
the	O
Apple	B-Device
M1	I-Device
chip	O
.	O
</s>
<s>
The	O
original	B-Device
iMac	I-Device
was	O
the	O
first	O
legacy-free	B-Protocol
PC	I-Protocol
.	O
</s>
<s>
It	O
was	O
the	O
first	O
Macintosh	B-Device
computer	I-Device
to	O
have	O
a	O
USB	B-Protocol
port	O
but	O
no	O
floppy	B-Device
disk	I-Device
drive	I-Device
.	O
</s>
<s>
Subsequently	O
,	O
all	O
Macs	B-Device
have	O
included	O
USB	B-Protocol
.	O
</s>
<s>
Via	O
the	O
USB	B-Protocol
port	O
,	O
hardware	O
makers	O
could	O
make	O
products	O
compatible	O
with	O
both	O
x86	O
PCs	O
and	O
Macs	B-Device
.	O
</s>
<s>
Previously	O
,	O
Macintosh	B-Device
users	O
had	O
to	O
seek	O
out	O
certain	O
hardware	O
,	O
such	O
as	O
keyboards	O
and	O
mice	B-Device
specifically	O
tailored	O
for	O
the	O
"	O
old	O
world	O
"	O
Mac	B-Device
's	O
unique	O
ADB	B-Device
interface	O
and	O
printers	O
and	O
modems	O
with	O
MiniDIN-8	O
serial	O
ports	O
.	O
</s>
<s>
USB	B-Protocol
,	O
being	O
cross-platform	O
,	O
has	O
allowed	O
Macintosh	B-Device
users	O
to	O
select	O
from	O
a	O
large	O
selection	O
of	O
devices	O
marketed	O
for	O
the	O
Wintel	B-Device
PC	O
platform	O
,	O
such	O
as	O
hubs	O
,	O
scanners	B-Application
,	O
storage	B-General_Concept
devices	I-General_Concept
,	O
USB	B-Protocol
flash	O
drives	O
,	O
and	O
mice	B-Device
.	O
</s>
<s>
After	O
the	O
iMac	B-Device
,	O
Apple	O
continued	O
to	O
remove	O
older	O
peripheral	O
interfaces	O
and	O
floppy	B-Device
drives	I-Device
from	O
the	O
rest	O
of	O
its	O
product	O
line	O
.	O
</s>
<s>
Borrowing	O
from	O
the	O
1997	O
Twentieth	B-Device
Anniversary	I-Device
Macintosh	I-Device
,	O
the	O
various	O
LCD-based	O
iMac	B-Device
designs	O
continued	O
the	O
all-in-one	B-Device
concept	O
first	O
envisioned	O
in	O
Apple	O
's	O
original	O
Macintosh	B-Device
computer	I-Device
.	O
</s>
<s>
The	O
successful	O
iMac	B-Device
allowed	O
Apple	O
to	O
continue	O
targeting	O
the	O
Power	B-Device
Macintosh	I-Device
line	O
at	O
the	O
high-end	O
of	O
the	O
market	O
.	O
</s>
<s>
This	O
foreshadowed	O
a	O
similar	O
strategy	O
in	O
the	O
notebook	O
market	O
when	O
the	O
iMac-like	O
iBook	B-Device
was	O
released	O
in	O
1999	O
.	O
</s>
<s>
Today	O
many	O
PCs	O
are	O
more	O
design-conscious	O
than	O
before	O
the	O
iMac	B-Device
's	O
introduction	O
,	O
with	O
multi-shaded	O
design	O
schemes	O
being	O
common	O
,	O
and	O
some	O
desktops	O
and	O
laptops	O
available	O
in	O
colorful	O
,	O
decorative	O
patterns	O
.	O
</s>
<s>
Apple	O
's	O
later	O
introduction	O
of	O
the	B-Device
iPod	I-Device
,	O
iBook	B-Device
G3	B-Device
(	O
Dual	O
USB	B-Protocol
)	O
,	O
and	O
iMac	B-Device
G4	I-Device
(	O
all	O
featuring	O
snowy-white	O
plastic	O
)	O
,	O
inspired	O
similar	O
designs	O
in	O
other	O
companies	O
 '	O
consumer	O
electronics	O
products	O
.	O
</s>
<s>
iMac	B-Device
has	O
received	O
considerable	O
critical	O
acclaim	O
,	O
including	O
praise	O
from	O
technology	O
columnist	O
Walt	O
Mossberg	O
as	O
the	O
"	O
Gold	O
Standard	O
of	O
desktop	B-Device
computing	I-Device
"	O
;	O
Forbes	O
magazine	O
described	O
the	O
original	O
candy-colored	O
line	O
of	O
iMac	B-Device
computers	O
as	O
being	O
an	O
"	O
industry-altering	O
success	O
"	O
.	O
</s>
<s>
The	O
first	O
24	O
"	O
Core	B-Device
2	I-Device
Duo	O
iMac	B-Device
received	O
CNET	O
's	O
"	O
Must-have	O
desktop	O
"	O
in	O
their	O
2006	O
Top	O
10	O
Holiday	O
Gift	O
Picks	O
.	O
</s>
<s>
Apple	O
faced	O
a	O
class-action	O
lawsuit	O
filed	O
in	O
2008	O
for	O
allegedly	O
deceiving	O
the	O
public	O
by	O
promising	O
millions	O
of	O
colors	O
from	O
the	O
LCD	B-Device
screens	I-Device
of	O
all	O
Mac	B-Device
models	O
while	O
its	O
20-inch	O
model	O
only	O
held	O
262,144	O
colors	O
.	O
</s>
<s>
This	O
issue	O
arose	O
due	O
to	O
the	O
use	O
of	O
6-bit	O
per	O
pixel	O
Twisted	O
nematic	O
LCD	B-Device
screens	I-Device
.	O
</s>
<s>
While	O
not	O
a	O
criticism	O
of	O
iMac	B-Device
per	O
se	O
,	O
the	O
integrated	O
design	O
has	O
some	O
inherent	O
tradeoffs	O
that	O
have	O
garnered	O
criticism	O
.	O
</s>
<s>
In	O
The	O
Mythical	O
Midrange	O
Mac	B-Device
Minitower	B-General_Concept
,	O
Dan	O
Frakes	O
of	O
Macworld	O
suggests	O
that	O
with	O
the	O
iMac	B-Device
occupying	O
the	O
midrange	O
of	O
Apple	O
's	O
product	O
line	O
,	O
Apple	O
has	O
little	O
to	O
offer	O
consumers	O
who	O
want	O
some	O
ability	O
to	O
expand	O
or	O
upgrade	O
their	O
computers	O
,	O
but	O
do	O
not	O
need	O
(	O
or	O
cannot	O
afford	O
)	O
the	O
Mac	B-Device
Pro	I-Device
.	O
</s>
<s>
For	O
example	O
,	O
iMac	B-Device
's	O
integration	O
of	O
monitor	O
and	O
computer	O
,	O
while	O
convenient	O
,	O
commits	O
the	O
owner	O
to	O
replace	O
both	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
For	O
a	O
time	O
before	O
the	O
Mac	B-Device
mini	I-Device
's	O
introduction	O
,	O
there	O
were	O
rumors	O
of	O
a	O
"	O
headless	O
iMac	B-Device
"	O
but	O
the	O
G4	B-Device
Mac	B-Device
mini	I-Device
as	O
introduced	O
had	O
lower	O
performance	O
compared	O
to	O
the	O
iMac	B-Device
,	O
which	O
at	O
the	O
time	O
featured	O
a	O
G5	B-General_Concept
processor	I-General_Concept
.	O
</s>
<s>
Some	O
third	O
party	O
suppliers	O
such	O
as	O
Other	O
World	O
Computing	O
provide	O
upgrade	O
kits	O
that	O
include	O
specialized	O
tools	O
for	O
working	O
on	O
iMacs	B-Device
.	O
</s>
<s>
Similarly	O
,	O
though	O
the	O
graphics	O
chipset	O
in	O
some	O
Intel	O
models	O
is	O
on	O
a	O
removable	O
MXM	B-Architecture
,	O
neither	O
Apple	O
nor	O
third	O
parties	O
have	O
offered	O
retail	O
iMac	B-Device
GPU	B-Architecture
upgrades	O
,	O
with	O
the	O
exception	O
of	O
those	O
for	O
the	O
original	B-Device
iMac	I-Device
G3	B-Device
's	O
"	O
mezzanine	O
"	O
PCI	O
slot	O
.	O
</s>
<s>
Models	O
after	O
iMac	B-Device
G5	I-Device
(	O
excluding	O
the	O
August	O
7	O
,	O
2007	O
iMac	B-Device
update	O
)	O
made	O
it	O
difficult	O
for	O
the	O
end-user	O
to	O
replace	O
the	O
hard	B-Device
disk	I-Device
or	O
optical	O
drive	O
,	O
and	O
Apple	O
's	O
warranty	O
explicitly	O
forbids	O
upgrading	O
the	O
socketed	O
CPU	O
.	O
</s>
<s>
While	O
conceding	O
the	O
possibility	O
of	O
a	O
mini-tower	O
cannibalizing	O
sales	O
from	O
the	O
Mac	B-Device
Pro	I-Device
,	O
Frakes	O
argues	O
there	O
is	O
enough	O
frustration	O
with	O
iMac	B-Device
's	O
limitations	O
to	O
make	O
such	O
a	O
proposition	O
worthwhile	O
.	O
</s>
<s>
This	O
disparity	O
has	O
become	O
more	O
pronounced	O
after	O
the	O
G4	B-Device
era	O
since	O
the	O
bottom-end	O
Power	B-Device
Mac	I-Device
G5	B-Device
(	O
with	O
one	O
brief	O
exception	O
)	O
and	O
Mac	B-Device
Pro	I-Device
models	O
have	O
all	O
been	O
priced	O
in	O
the	O
US$1999	O
–	O
2499$	O
range	O
,	O
while	O
base	O
model	O
Power	B-Device
Macs	I-Device
G4s	O
and	O
earlier	O
were	O
US$1299	O
–	O
1799	O
.	O
</s>
<s>
The	O
current	O
generation	O
iMac	B-Device
has	O
Intel	O
5th	O
generation	O
i5	B-Device
and	O
i7	B-Device
processors	O
,	O
ranging	O
from	O
quad-core	O
2.7	O
GHz	O
i5	B-Device
to	O
a	O
quad-core	O
3.4	O
GHz	O
i7	B-Device
processor	B-General_Concept
,	O
however	O
it	O
is	O
possible	O
to	O
upgrade	O
the	O
2010	O
edition	O
of	O
the	O
iMac	B-Device
quite	O
easily	O
.	O
</s>
<s>
Generation	O
Form	O
factor	O
Display	B-Device
Processor	B-General_Concept
Included	O
HDD	B-Device
Included	O
Mac	B-Application
OS	I-Application
version	O
Release	O
date	O
Discontinued	O
iMac	B-Device
G3	I-Device
140px|Slot	O
loading	O
iMac	B-Device
G3	I-Device
.	O
</s>
<s>
15″	O
(	O
13.8	O
″	O
viewable	O
)	O
CRT	B-Device
PowerPC	B-Device
G3	I-Device
4	O
GB	O
to	O
60	O
GB	O
8.1	B-Device
,	O
8.5	O
,	O
8.6	O
,	O
9.0	B-Operating_System
,	O
9.1	O
,	O
10.0	B-Operating_System
,	O
10.1	B-Operating_System
,	O
10.2	B-Operating_System
August	O
15	O
,	O
1998	O
March	O
2003	O
iMac	B-Device
G4	I-Device
120px|iMac	O
G4	O
Sunflower	O
.	O
</s>
<s>
15″	O
,	O
17″	O
,	O
or	O
20″	O
LCD	B-Device
PowerPC	B-General_Concept
G4	I-General_Concept
40	O
GB	O
to	O
160	O
GB	O
9.2	O
,	O
10.1	B-Operating_System
,	O
10.2	B-Operating_System
,	O
10.3	B-Operating_System
January	O
7	O
,	O
2002	O
July	O
2004	O
iMac	B-Device
G5	I-Device
140px|iMac	O
G5	O
Rev	O
A	O
.	O
</s>
<s>
17″	O
or	O
20″	O
LCD	B-Device
PowerPC	B-General_Concept
G5	I-General_Concept
40	O
GB	O
to	O
500	O
GB	O
10.3	B-Operating_System
,	O
10.4	B-Application
August	O
31	O
,	O
2004	O
March	O
2006	O
Polycarbonate	O
Intel	B-Device
iMac	I-Device
140px|Polycarbonate	O
iMac	B-Device
.	O
</s>
<s>
17″	O
,	O
20″	O
,	O
or	O
24″	O
LCD	B-Device
Intel	B-Device
Core	I-Device
Duo/Intel	O
Core	O
2	O
Duo	O
80	O
GB	O
to	O
750	O
GB	O
10.4	B-Application
January	O
2006	O
August	O
2007	O
Aluminum	O
iMac	B-Device
150px|Aluminium	O
iMac	B-Device
.	O
</s>
<s>
20″	O
or	O
24″	O
LCD	B-Device
Intel	B-Device
Core	I-Device
2	I-Device
Duo	O
250	O
GB	O
to	O
1	O
TB	O
10.4	B-Application
,	O
10.5	B-Application
,	O
10.6	B-Device
August	O
7	O
,	O
2007	O
August	O
2011	O
Unibody	O
iMac	B-Device
180px|Unibody	O
iMac	B-Device
.	O
</s>
<s>
21.5	O
"	O
or	O
27	O
"	O
LED-LCD	O
Intel	B-Device
Core	I-Device
2	I-Device
Duo/i3/i5/i7	O
500	O
GB	O
to	O
2	O
TB	O
or	O
256	O
GB	O
SSD	B-Device
10.6	B-Device
,	O
10.7	B-Application
,	O
10.8	B-Operating_System
October	O
20	O
,	O
2009	O
March	O
2013	O
Slim	O
Unibody	O
iMac	B-Device
160px|Slim	O
edge	O
unibody	O
iMac	B-Device
.	O
</s>
<s>
Intel	O
Core	O
i3/	O
i5/i7	O
1	O
TB	O
to	O
3	O
TB	O
HDD	B-Device
,	O
1	O
TB	O
to	O
3	O
TB	O
Fusion	B-Device
Drive	I-Device
or	O
256	O
GB	O
to	O
1	O
TB	O
flash	O
storage	B-General_Concept
10.8	B-Operating_System
,	O
10.9	B-Operating_System
,	O
10.10	B-Device
,	O
10.11	B-Operating_System
,	O
10.12	B-Operating_System
,	O
10.13	B-Operating_System
,	O
10.14	B-Device
,	O
10.15	B-Device
,	O
11	B-Operating_System
November	O
30	O
,	O
2012	O
(	O
21.5	O
"	O
)	O
,	O
January	O
2013	O
(	O
27	O
"	O
)	O
October	O
13	B-Operating_System
,	O
2015	O
(	O
27	O
"	O
)	O
,	O
October	O
30	O
,	O
2021	O
(	O
21.5	O
"	O
)	O
Retina	B-Operating_System
iMac	B-Device
160px|Retina	O
iMac	B-Device
.	O
</s>
