<s>
Apple	O
transitioned	O
the	O
CPUs	B-General_Concept
of	O
their	O
Mac	B-Device
and	O
Xserve	B-Device
computers	O
from	O
PowerPC	B-Architecture
to	O
the	O
x86	B-Operating_System
architecture	I-Operating_System
from	O
Intel	O
.	O
</s>
<s>
The	O
change	O
was	O
announced	O
at	O
the	O
2005	O
Worldwide	O
Developers	O
Conference	O
(	O
WWDC	O
)	O
by	O
then-Apple	O
CEO	O
Steve	O
Jobs	O
,	O
who	O
said	O
Apple	O
would	O
gradually	O
stop	O
using	O
PowerPC	B-Architecture
microprocessors	B-Architecture
supplied	O
by	O
Freescale	O
(	O
formerly	O
Motorola	O
)	O
and	O
IBM	O
.	O
</s>
<s>
This	O
was	O
the	O
second	O
time	O
Apple	O
changed	O
the	O
processor	O
instruction	B-General_Concept
set	I-General_Concept
architecture	I-General_Concept
of	O
its	O
personal	O
computers	O
.	O
</s>
<s>
The	O
first	O
was	O
in	O
1994	O
,	O
when	O
Apple	O
discarded	O
the	O
Mac	B-Device
's	O
original	O
Motorola	B-Device
68000	I-Device
series	I-Device
architecture	O
in	O
favor	O
of	O
the	O
then-new	O
PowerPC	B-Architecture
platform	I-Architecture
.	O
</s>
<s>
The	O
first-generation	O
Intel-based	O
Macintoshes	B-Device
were	O
released	O
in	O
January	O
2006	O
with	O
Mac	B-Application
OS	I-Application
X	I-Application
10.4.4	I-Application
Tiger	I-Application
.	O
</s>
<s>
In	O
August	O
,	O
Jobs	O
announced	O
the	O
last	O
models	O
to	O
switch	O
,	O
with	O
the	O
Mac	B-Device
Pro	I-Device
available	O
immediately	O
and	O
the	O
Intel	O
Xserve	B-Device
available	O
by	O
October	O
(	O
it	O
actually	O
shipped	O
in	O
December	O
)	O
.	O
</s>
<s>
The	O
final	O
version	O
of	O
Apple	O
's	O
Mac	B-Device
OS	I-Device
X	I-Device
that	O
ran	O
on	O
PowerPC	B-Architecture
chips	I-Architecture
was	O
2007	O
's	O
Leopard	B-Application
(	O
version	O
10.5	O
)	O
,	O
released	O
in	O
October	O
2007	O
.	O
</s>
<s>
The	O
final	O
version	O
to	O
run	O
applications	O
written	O
for	O
PowerPC	B-Architecture
chips	I-Architecture
,	O
using	O
the	O
Rosetta	B-Operating_System
binary	O
translator	O
,	O
was	O
2009	O
's	O
Snow	B-Device
Leopard	I-Device
(	O
version	O
10.6	B-Device
)	O
.	O
</s>
<s>
Mac	B-Application
OS	I-Application
X	I-Application
Lion	I-Application
(	O
version	O
10.7	B-Application
)	O
dropped	O
support	O
altogether	O
.	O
</s>
<s>
In	O
2020	O
,	O
Apple	O
announced	O
that	O
it	O
would	O
shift	B-Device
its	I-Device
Mac	I-Device
line	I-Device
to	I-Device
Apple	I-Device
silicon	I-Device
,	O
which	O
are	O
ARM-based	O
processors	O
developed	O
in-house	O
.	O
</s>
<s>
Apple	O
had	O
been	O
using	O
PowerPC	B-Architecture
processors	I-Architecture
in	O
its	O
products	O
for	O
11	O
years	O
when	O
the	O
move	O
to	O
Intel	O
processors	O
was	O
announced	O
.	O
</s>
<s>
At	O
2003	O
's	O
WWDC	O
keynote	O
address	O
,	O
Jobs	O
unveiled	O
a	O
Power	B-Device
Mac	I-Device
with	O
a	O
processor	O
from	O
IBM	O
's	O
PowerPC	B-General_Concept
G5	I-General_Concept
product	O
line	O
,	O
the	O
first	O
personal	O
computer	O
to	O
feature	O
a	O
64-bit	B-Device
processor	I-Device
.	O
</s>
<s>
He	O
promised	O
a	O
3	O
GHz	O
Power	B-Device
Mac	I-Device
G5	I-Device
within	O
12	O
months	O
,	O
but	O
never	O
released	O
such	O
a	O
product	O
.	O
</s>
<s>
Apple	O
officials	O
also	O
said	O
in	O
2003	O
they	O
planned	O
to	O
release	O
a	O
PowerBook	B-Device
with	O
a	O
G5	B-General_Concept
processor	I-General_Concept
,	O
but	O
such	O
a	O
product	O
never	O
materialized	O
.	O
</s>
<s>
Tim	O
Cook	O
,	O
then	O
Apple	O
's	O
Executive	O
Vice	O
President	O
of	O
Worldwide	O
Sales	O
and	O
Operations	O
,	O
said	O
during	O
an	O
earnings	O
call	O
that	O
putting	O
a	O
G5	B-General_Concept
in	O
a	O
PowerBook	B-Device
was	O
"	O
the	O
mother	O
of	O
all	O
thermal	O
challenges	O
"	O
.	O
</s>
<s>
In	O
addition	O
,	O
there	O
were	O
reports	O
that	O
IBM	O
officials	O
had	O
concerns	O
over	O
the	O
profitability	O
of	O
a	O
low-volume	O
business	O
,	O
which	O
caused	O
tensions	O
with	O
Apple	O
and	O
its	O
desires	O
for	O
a	O
wide	O
variety	O
of	O
PowerPC	B-Architecture
processors	I-Architecture
.	O
</s>
<s>
The	O
first	O
known	O
attempt	O
by	O
Apple	O
to	O
move	O
to	O
Intel	O
's	O
platform	O
was	O
the	O
Star	B-Operating_System
Trek	I-Operating_System
project	I-Operating_System
,	O
a	O
code	O
name	O
given	O
to	O
a	O
secret	O
project	O
to	O
run	O
a	O
port	O
of	O
Classic	B-Application
Mac	I-Application
OS	I-Application
System	B-Operating_System
7	I-Operating_System
and	O
its	O
applications	O
on	O
an	O
Intel-compatible	B-Operating_System
personal	O
computer	O
.	O
</s>
<s>
John	O
Sculley	O
's	O
departure	O
during	O
the	O
Star	B-Operating_System
Trek	I-Operating_System
project	I-Operating_System
was	O
a	O
factor	O
in	O
the	O
project	O
's	O
termination	O
.	O
</s>
<s>
Michael	O
Spindler	O
,	O
who	O
took	O
over	O
as	O
Apple	O
's	O
CEO	O
,	O
devoted	O
most	O
of	O
Apple	O
's	O
resources	O
to	O
moving	O
to	O
PowerPC	B-Architecture
instead	O
,	O
thus	O
initiating	O
Apple	O
's	O
first	O
processor	O
transition	O
.	O
</s>
<s>
After	O
Apple	O
's	O
1997	O
acquisition	O
of	O
NeXT	O
,	O
Apple	O
began	O
to	O
rework	O
their	O
NeXTSTEP	B-Application
operating	O
system	O
into	O
a	O
successor	O
to	O
the	O
classic	B-Application
Mac	I-Application
OS	I-Application
,	O
codenamed	O
Rhapsody	B-Operating_System
.	O
</s>
<s>
Jobs	O
(	O
who	O
rejoined	O
Apple	O
upon	O
the	O
purchase	O
)	O
demonstrated	O
an	O
Intel-compatible	B-Operating_System
build	O
of	O
Rhapsody	B-Operating_System
to	O
Dell	O
founder	O
and	O
namesake	O
Michael	O
Dell	O
.	O
</s>
<s>
Jobs	O
offered	O
to	O
license	O
the	O
new	O
OS	O
to	O
Dell	O
for	O
its	O
PCs	O
,	O
so	O
that	O
users	O
could	O
choose	O
between	O
it	O
and	O
Windows	B-Application
.	O
</s>
<s>
However	O
,	O
Dell	O
declined	O
when	O
Jobs	O
insisted	O
that	O
the	O
company	O
license	O
the	O
operating	O
system	O
for	O
every	O
PC	O
it	O
ships	O
,	O
regardless	O
of	O
whether	O
or	O
not	O
the	O
user	O
wanted	O
to	O
use	O
Mac	B-Application
OS	I-Application
.	O
</s>
<s>
In	O
the	O
years	O
since	O
the	O
end	O
of	O
the	O
Star	B-Operating_System
Trek	I-Operating_System
project	I-Operating_System
,	O
there	O
were	O
reports	O
of	O
Apple	O
working	O
to	O
port	O
its	O
operating	O
system	O
to	O
Intel	O
's	O
x86	B-Operating_System
processors	O
,	O
with	O
one	O
engineer	O
managing	O
to	O
get	O
Apple	O
's	O
OS	O
to	O
run	O
on	O
a	O
number	O
of	O
Intel-powered	O
computers	O
.	O
</s>
<s>
Jobs	O
even	O
presented	O
a	O
Vaio	O
running	O
Mac	B-Application
OS	I-Application
.	O
</s>
<s>
In	O
2002	O
,	O
it	O
was	O
reported	O
that	O
Apple	O
had	O
more	O
than	O
a	O
dozen	O
software	O
engineers	O
tasked	O
to	O
a	O
project	O
code-named	O
"	O
Marklar	O
,	O
"	O
with	O
a	O
mission	O
to	O
steadily	O
work	O
on	O
maintaining	O
X86-compatible	O
builds	O
of	O
Mac	B-Device
OS	I-Device
X	I-Device
.	O
</s>
<s>
It	O
was	O
noted	O
in	O
2003	O
by	O
IBM	O
in	O
an	O
article	O
published	O
to	O
its	O
intranet	B-General_Concept
that	O
Apple	O
felt	O
a	O
transition	O
to	O
Intel	O
would	O
present	O
massive	O
software	O
changes	O
that	O
it	O
wanted	O
to	O
avoid	O
.	O
</s>
<s>
At	O
the	O
time	O
Apple	O
announced	O
the	O
transition	O
,	O
Jobs	O
attributed	O
the	O
switch	O
to	O
a	O
superior	O
product	O
roadmap	O
that	O
Intel	O
offered	O
,	O
as	O
well	O
as	O
an	O
inability	O
to	O
build	O
products	O
envisioned	O
by	O
Apple	O
based	O
on	O
the	O
PowerPC	B-Architecture
product	O
roadmap	O
.	O
</s>
<s>
Meanwhile	O
,	O
pricing	O
disputes	O
with	O
IBM	O
,	O
in	O
addition	O
to	O
a	O
desire	O
by	O
Apple	O
to	O
give	O
its	O
computer	O
the	O
ability	O
to	O
run	O
Microsoft	B-Application
Windows	I-Application
,	O
were	O
reportedly	O
factors	O
for	O
the	O
switch	O
as	O
well	O
.	O
</s>
<s>
In	O
2011	O
,	O
Apple	O
investigated	O
using	O
AMD	O
's	O
low	O
power	O
Llano	O
APU	O
for	O
the	O
MacBook	B-Device
Air	I-Device
,	O
but	O
eventually	O
opted	O
for	O
Intel	O
due	O
to	O
AMD	O
's	O
potential	O
inability	O
to	O
supply	O
enough	O
Llano	O
processors	O
to	O
meet	O
demand	O
.	O
</s>
<s>
Apple	O
had	O
created	O
the	O
world	O
's	O
first	O
consumer	O
64-bit	B-Device
desktop	O
computer	O
with	O
its	O
G5	B-General_Concept
based	O
line-up	O
,	O
however	O
the	O
first	O
Intel-based	O
Macs	B-Device
included	O
only	O
Intel	B-Device
Core	I-Device
Duo	I-Device
processors	O
,	O
which	O
were	O
32-bit	O
.	O
</s>
<s>
Apple	O
refreshed	O
its	O
line	O
of	O
computers	O
six	O
months	O
later	O
,	O
adding	O
Intel	O
's	O
new	O
Intel	B-Device
Core	I-Device
2	O
Duo	O
64-bit	B-Device
processors	I-Device
.	O
</s>
<s>
When	O
Rosetta	B-Operating_System
was	O
announced	O
,	O
it	O
was	O
noted	O
that	O
the	O
translation	O
software	O
is	O
designed	O
to	O
translate	O
applications	O
that	O
run	O
on	O
a	O
"	O
PowerPC	B-Architecture
with	O
a	O
G3	B-Device
processor	O
and	O
that	O
are	O
built	O
for	O
Mac	O
OS	O
X.	O
"	O
</s>
<s>
In	O
addition	O
,	O
It	O
was	O
noted	O
by	O
Intel	O
's	O
then	O
CEO	O
,	O
Paul	O
Otellini	O
,	O
that	O
Apple	O
and	O
Intel	O
's	O
relationship	O
was	O
strained	O
at	O
times	O
,	O
especially	O
due	O
to	O
Apple	O
's	O
commission	O
of	O
an	O
ad	O
that	O
shows	O
Intel	O
processors	O
being	O
outperformed	O
by	O
PowerPC	B-Architecture
processors	I-Architecture
.	O
</s>
<s>
There	O
was	O
concern	O
that	O
an	O
early	O
announcement	O
of	O
the	O
change	O
would	O
cause	O
an	O
Osborne	O
effect	O
,	O
but	O
it	O
was	O
also	O
noted	O
that	O
even	O
if	O
an	O
Osborne	O
effect	O
appeared	O
,	O
it	O
would	O
merely	O
mean	O
delayed	O
purchases	O
of	O
Mac	B-Device
computers	I-Device
,	O
not	O
permanent	O
cancellations	O
,	O
and	O
that	O
Apple	O
had	O
enough	O
cash	O
on	O
hand	O
to	O
weather	O
the	O
potential	O
sales	O
decline	O
.	O
</s>
<s>
Analysis	O
of	O
financial	O
data	O
suggests	O
that	O
the	O
Osborne	O
Effect	O
did	O
not	O
materialize	O
,	O
with	O
sales	O
for	O
Macs	B-Device
growing	O
by	O
19%	O
and	O
37%	O
in	O
the	O
two	O
quarters	O
following	O
March	O
2006	O
.	O
</s>
<s>
The	O
Classic	O
environment	O
,	O
the	O
Mac	B-Operating_System
OS	I-Operating_System
9	I-Operating_System
virtualization	O
measure	O
for	O
Mac	B-Device
OS	I-Device
X	I-Device
,	O
was	O
not	O
ported	O
to	O
the	O
x86	B-Operating_System
architecture	I-Operating_System
,	O
leaving	O
the	O
new	O
Intel-powered	O
Macs	B-Device
incompatible	O
with	O
classic	B-Application
Mac	I-Application
OS	I-Application
applications	O
without	O
a	O
proper	O
third-party	O
PowerPC	B-Architecture
emulator	O
.	O
</s>
<s>
There	O
were	O
also	O
concerns	O
over	O
third-party	O
software	O
support	O
,	O
with	O
reaction	O
to	O
the	O
change	O
being	O
mixed	O
amongst	O
the	O
software	O
developer	O
community	O
,	O
due	O
to	O
a	O
need	O
to	O
recompile	O
software	O
for	O
compatibility	O
on	O
Intel-based	O
Macs	B-Device
.	O
</s>
<s>
In	O
early	O
2006	O
,	O
it	O
was	O
reported	O
that	O
a	O
number	O
of	O
software	O
companies	O
,	O
such	O
as	O
Adobe	O
,	O
Aspyr	O
and	O
Microsoft	O
,	O
were	O
not	O
ready	O
to	O
release	O
universal	B-Operating_System
binary	I-Operating_System
versions	O
of	O
their	O
software	O
offerings	O
.	O
</s>
<s>
During	O
Apple	O
's	O
2005	O
WWDC	O
,	O
the	O
company	O
introduced	O
a	O
Developer	O
Transition	O
Kit	O
consisting	O
of	O
a	O
prototype	O
Intel-based	O
Mac	B-Device
computer	I-Device
,	O
along	O
with	O
preliminary	O
versions	O
of	O
Mac	B-Application
OS	I-Application
X	I-Application
Tiger	I-Application
and	O
Xcode	O
,	O
which	O
allowed	O
developers	O
to	O
prepare	O
future	O
versions	O
of	O
their	O
software	O
to	O
run	O
on	O
both	O
PowerPC	B-Architecture
and	O
Intel-based	O
Macs	B-Device
.	O
</s>
<s>
To	O
allow	O
apps	O
built	O
for	O
PowerPC-based	O
Macs	B-Device
to	O
run	O
on	O
Intel-based	O
Macs	B-Device
without	O
recompilation	O
,	O
a	O
dynamic	O
binary	O
translation	O
software	O
called	O
Rosetta	B-Operating_System
was	O
created	O
.	O
</s>
<s>
On	O
January	O
10	O
,	O
Apple	O
unveiled	O
an	O
Intel-based	B-Device
iMac	I-Device
,	O
as	O
well	O
as	O
a	O
15-inch	O
MacBook	B-Device
Pro	I-Device
laptop	O
,	O
which	O
replaced	O
the	O
similarly	O
sized	O
PowerBook	B-Device
.	O
</s>
<s>
On	O
February	O
28	O
,	O
a	O
Mac	B-Device
mini	I-Device
featuring	O
an	O
Intel	B-Device
Core	I-Device
Duo	I-Device
processor	O
was	O
unveiled	O
.	O
</s>
<s>
On	O
April	O
5	O
,	O
the	O
dual-boot	O
software	O
Boot	B-Application
Camp	I-Application
was	O
released	O
as	O
a	O
trial	O
version	O
,	O
which	O
allowed	O
Intel-based	O
Mac	B-Device
owners	O
to	O
run	O
Mac	B-Device
OS	I-Device
X	I-Device
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
On	O
April	O
24	O
,	O
a	O
MacBook	B-Device
Pro	I-Device
replacement	O
for	O
the	O
17-inch	O
PowerBook	B-Device
was	O
announced	O
.	O
</s>
<s>
On	O
May	O
16	O
,	O
a	O
replacement	O
for	O
the	O
iBook	B-Device
,	O
called	O
MacBook	B-Device
,	O
was	O
announced	O
,	O
thus	O
completing	O
the	O
transition	O
of	O
Apple	O
's	O
laptop	O
line	O
to	O
Intel	O
processors	O
.	O
</s>
<s>
On	O
July	O
5	O
,	O
a	O
replacement	O
for	O
the	O
eMac	B-Device
,	O
a	O
special	O
configuration	O
of	O
a	O
17-inch	O
iMac	B-Device
for	O
use	O
in	O
education	O
,	O
was	O
announced	O
.	O
</s>
<s>
On	O
August	O
7	O
,	O
Apple	O
unveiled	O
a	O
replacement	O
for	O
the	O
PowerMac	O
,	O
Mac	B-Device
Pro	I-Device
,	O
and	O
an	O
Intel-based	O
version	O
of	O
Xserve	B-Device
.	O
</s>
<s>
The	O
unveiling	O
of	O
the	O
Mac	B-Device
Pro	I-Device
was	O
touted	O
by	O
Apple	O
as	O
a	O
completion	O
of	O
its	O
transition	O
to	O
Intel	O
,	O
and	O
said	O
the	O
entire	O
process	O
took	O
210	O
days	O
.	O
</s>
<s>
The	O
first	O
macOS	B-Application
to	O
require	O
a	O
Mac	B-Device
with	O
Intel	O
processors	O
,	O
thus	O
dropping	O
support	O
for	O
PowerPC-based	O
Macs	B-Device
,	O
was	O
10.6	B-Device
Snow	I-Device
Leopard	I-Device
.	O
</s>
<s>
Snow	B-Device
Leopard	I-Device
was	O
shipped	O
in	O
August	O
2009	O
,	O
three	O
years	O
after	O
the	O
transition	O
was	O
complete	O
.	O
</s>
<s>
Support	O
for	O
Rosetta	B-Operating_System
was	O
dropped	O
from	O
macOS	B-Application
on	O
10.7	B-Application
Lion	I-Application
,	O
which	O
was	O
released	O
in	O
July	O
2011	O
.	O
</s>
<s>
The	O
last	O
Apple	O
app	O
to	O
feature	O
support	O
for	O
PowerPC	B-Architecture
processors	I-Architecture
was	O
iTunes	O
10.6.3	O
,	O
which	O
was	O
released	O
on	O
June	O
11	O
,	O
2012	O
.	O
</s>
<s>
Based	O
on	O
this	O
policy	O
,	O
all	O
PowerPC-based	O
Macs	B-Device
are	O
now	O
considered	O
obsolete	O
.	O
</s>
<s>
In	O
spite	O
of	O
the	O
PowerPC	B-Architecture
architecture	O
now	O
being	O
considered	O
obsolete	O
,	O
use	O
of	O
the	O
systems	O
remains	O
popular	O
in	O
retrocomputing	O
;	O
multiple	O
community	O
projects	O
exist	O
that	O
aim	O
to	O
allow	O
PowerPC	B-Architecture
Macs	B-Device
to	O
carry	O
out	O
modern	O
tasks	O
,	O
such	O
as	O
the	O
Classilla	B-Protocol
and	O
TenFourFox	B-Operating_System
web	O
browsers	O
.	O
</s>
<s>
A	O
Mashable	O
article	O
in	O
2016	O
noted	O
that	O
the	O
decision	O
to	O
switch	O
to	O
Intel	O
processors	O
gave	O
many	O
people	O
who	O
wanted	O
a	O
Mac	B-Device
,	O
but	O
could	O
n't	O
commit	O
to	O
giving	O
up	O
Windows	B-Application
,	O
a	O
way	O
to	O
have	O
both	O
via	O
Boot	B-Application
Camp	I-Application
and	O
a	O
number	O
of	O
virtualization	O
programs	O
,	O
and	O
that	O
Mac	B-Device
,	O
as	O
a	O
computer	O
platform	O
,	O
had	O
a	O
renaissance	O
following	O
the	O
transition	O
,	O
with	O
more	O
apps	O
being	O
developed	O
.	O
</s>
<s>
The	O
article	O
also	O
said	O
following	O
the	O
transition	O
to	O
Intel	O
,	O
Mac	B-Device
,	O
while	O
still	O
outsold	O
by	O
Windows	B-Application
and	O
other	O
computer	O
systems	O
,	O
has	O
had	O
a	O
remarkable	O
comeback	O
,	O
and	O
also	O
noted	O
that	O
Mac	B-Device
users	O
tend	O
to	O
be	O
loyal	O
to	O
the	O
Apple	O
ecosystem	O
,	O
which	O
leads	O
to	O
purchases	O
of	O
other	O
Apple	O
products	O
such	O
as	O
iPad	B-Device
,	O
iPhone	B-Device
and	O
Apple	B-Device
Watch	I-Device
.	O
</s>
<s>
On	O
June	O
22	O
,	O
2020	O
,	O
Apple	O
announced	O
plans	O
to	O
transition	B-Device
the	I-Device
Macintosh	I-Device
to	I-Device
ARM	I-Device
processors	I-Device
over	O
a	O
two-year	O
period	O
,	O
following	O
a	O
roadmap	O
similar	O
to	O
the	O
Intel	O
transition	O
,	O
including	O
universal	B-Operating_System
binaries	I-Operating_System
and	O
a	O
Rosetta	B-Operating_System
2	O
compatibility	O
program	O
.	O
</s>
<s>
Apple	O
had	O
been	O
using	O
ARM	B-Architecture
processors	I-Architecture
in	O
the	O
iPhone	B-Device
since	O
2007	O
,	O
and	O
had	O
been	O
using	O
them	O
in	O
the	O
iPad	B-Device
,	O
iPod	B-Device
Touch	I-Device
,	O
Apple	B-Device
TV	I-Device
,	O
and	O
Apple	B-Device
Watch	I-Device
as	O
well	O
,	O
and	O
had	O
been	O
designing	O
its	O
own	O
ARM	B-Architecture
processors	I-Architecture
since	O
the	O
Apple	O
A6	O
in	O
2012	O
.	O
</s>
<s>
June	O
6	O
,	O
2005	O
:	O
Apple	O
announced	O
its	O
plans	O
to	O
switch	O
to	O
Intel	O
processors	O
at	O
the	O
Worldwide	O
Developer	O
Conference	O
and	O
released	O
a	O
Developer	O
Transition	O
System	O
,	O
a	O
PC	O
running	O
an	O
Intel	O
build	O
of	O
Mac	O
OS	O
X	O
10.4.1	O
in	O
a	O
modified	O
Power	B-Device
Mac	I-Device
G5	I-Device
case	O
,	O
to	O
all	O
Select	O
and	O
Premier	O
members	O
of	O
the	O
Apple	O
Developer	O
Connection	O
at	O
a	O
price	O
of	O
$999	O
.	O
</s>
<s>
January	O
10	O
,	O
2006	O
:	O
Jobs	O
announced	O
the	O
first	O
two	O
computers	O
in	O
this	O
series	O
,	O
the	O
15	O
"	O
MacBook	B-Device
Pro	I-Device
and	O
iMac	B-Device
Core	I-Device
Duo	I-Device
line	O
,	O
both	O
using	O
an	O
Intel	B-Device
Core	I-Device
Duo	I-Device
chip	O
and	O
offered	O
to	O
trade	O
in	O
the	O
Developer	O
Transition	O
Kits	O
for	O
iMacs	B-Device
.	O
</s>
<s>
February	O
28	O
,	O
2006	O
:	O
Jobs	O
announced	O
that	O
the	O
Mac	B-Device
mini	I-Device
now	O
also	O
comes	O
with	O
an	O
Intel	B-Device
Core	I-Device
chip	O
,	O
in	O
either	O
the	O
Solo	O
or	O
Duo	O
varieties	O
.	O
</s>
<s>
April	O
5	O
,	O
2006	O
:	O
Apple	O
announced	O
the	O
release	O
of	O
Boot	B-Application
Camp	I-Application
,	O
which	O
allowed	O
users	O
of	O
Intel-based	O
Macs	B-Device
to	O
run	O
Windows	B-Application
XP	I-Application
(	O
later	O
versions	O
of	O
Boot	B-Application
Camp	I-Application
allow	O
later	O
versions	O
of	O
Windows	B-Application
)	O
.	O
</s>
<s>
April	O
24	O
,	O
2006	O
:	O
Apple	O
announced	O
the	O
17	O
"	O
MacBook	B-Device
Pro	I-Device
,	O
replacing	O
the	O
17	O
"	O
PowerBook	B-Device
.	O
</s>
<s>
April	O
27	O
,	O
2006	O
:	O
Intel	O
announced	O
that	O
processors	O
with	O
the	O
Core	B-Device
microarchitecture	I-Device
would	O
be	O
released	O
months	O
sooner	O
than	O
previously	O
thought	O
.	O
</s>
<s>
May	O
16	O
,	O
2006	O
:	O
Apple	O
announced	O
the	O
13	O
"	O
MacBook	B-Device
,	O
replacing	O
both	O
the	O
iBook	B-Device
line	O
and	O
the	O
12	O
"	O
PowerBook	B-Device
.	O
</s>
<s>
July	O
5	O
,	O
2006	O
:	O
Apple	O
announced	O
a	O
special	O
educational	O
configuration	O
of	O
the	O
iMac	B-Device
,	O
replacing	O
the	O
old	O
G4	B-General_Concept
eMac	B-Device
.	O
</s>
<s>
August	O
7	O
,	O
2006	O
:	O
"	O
Transition	O
Complete	O
"	O
-	O
Apple	O
announced	O
the	O
Intel-based	O
Mac	B-Device
Pro	I-Device
and	O
Xserve	B-Device
,	O
replacing	O
the	O
Power	B-Device
Mac	I-Device
G5	I-Device
and	O
Xserve	B-Device
G5	B-General_Concept
,	O
at	O
the	O
Worldwide	O
Developers	O
Conference	O
;	O
both	O
use	O
the	O
Xeon	O
5100	O
series	O
(	O
"	O
Woodcrest	O
"	O
)	O
processors	O
.	O
</s>
<s>
October	O
26	O
,	O
2007	O
:	O
Apple	O
shipped	O
Mac	B-Application
OS	I-Application
X	I-Application
10.5	I-Application
"	I-Application
Leopard	I-Application
"	I-Application
,	O
the	O
final	O
release	O
with	O
PowerPC	B-Architecture
support	O
.	O
</s>
<s>
Macs	B-Device
using	O
a	O
G3	B-Device
processor	O
cannot	O
boot	O
this	O
operating	O
system	O
,	O
as	O
only	O
G4	B-General_Concept
and	O
G5	B-General_Concept
processors	I-General_Concept
with	O
a	O
minimum	O
867MHz	O
clock	O
speed	O
are	O
supported	O
.	O
</s>
<s>
August	O
28	O
,	O
2009	O
:	O
Apple	O
shipped	O
Mac	B-Device
OS	I-Device
X	I-Device
10.6	I-Device
"	O
Snow	B-Device
Leopard	I-Device
"	O
exclusively	O
for	O
Intel	O
Macs	B-Device
.	O
</s>
<s>
PowerPC	B-Architecture
Macs	B-Device
cannot	O
boot	O
this	O
OS	O
.	O
</s>
<s>
This	O
is	O
also	O
the	O
final	O
release	O
with	O
Rosetta	B-Operating_System
,	O
allowing	O
PowerPC	B-Architecture
software	O
to	O
run	O
on	O
an	O
Intel	O
Mac	B-Device
.	O
</s>
<s>
March	O
1	O
,	O
2011	O
:	O
The	O
beta	O
version	O
of	O
the	O
then-upcoming	O
Mac	B-Application
OS	I-Application
X	I-Application
Lion	I-Application
dropped	O
"	O
Rosetta	B-Operating_System
"	O
and	O
lost	O
the	O
ability	O
to	O
run	O
PowerPC	B-Architecture
based	O
software	O
.	O
</s>
<s>
June	O
23	O
,	O
2011	O
:	O
Support	O
for	O
Mac	B-Application
OS	I-Application
10.5	I-Application
Leopard	B-Application
came	O
to	O
a	O
end	O
,	O
formally	O
ending	O
Apple	O
's	O
support	O
of	O
PowerPC	B-Architecture
on	O
Mac	B-Device
OS	I-Device
X	I-Device
.	O
</s>
<s>
July	O
20	O
,	O
2011	O
:	O
The	O
release	O
of	O
Mac	B-Application
OS	I-Application
X	I-Application
10.7	I-Application
Lion	I-Application
formally	O
ended	O
Apple	O
's	O
support	O
of	O
PowerPC-based	O
software	O
.	O
</s>
<s>
August	O
7	O
,	O
2011	O
:	O
PowerPC	B-Architecture
hardware	O
reached	O
"	O
vintage	O
"	O
status	O
having	O
been	O
discontinued	O
five	O
years	O
prior	O
,	O
ending	O
most	O
of	O
Apple	O
's	O
service	O
and	O
parts	O
support	O
for	O
PowerPC	B-Architecture
hardware	O
.	O
</s>
<s>
June	O
11	O
,	O
2012	O
:	O
Apple	O
released	O
iTunes	O
10.6.3	O
,	O
their	O
last	O
application	O
with	O
support	O
for	O
PowerPC	B-Architecture
processors	I-Architecture
.	O
</s>
<s>
August	O
7	O
,	O
2013	O
:	O
PowerPC	B-Architecture
hardware	O
reached	O
"	O
obsolete	O
"	O
status	O
having	O
been	O
discontinued	O
seven	O
years	O
ago	O
,	O
ending	O
all	O
of	O
Apple	O
's	O
service	O
and	O
parts	O
support	O
for	O
PowerPC	B-Architecture
hardware	O
.	O
</s>
