<s>
Bloomfield	B-Device
is	O
the	O
code	O
name	O
for	O
Intel	O
high-end	O
desktop	O
processors	O
sold	O
as	O
Core	O
i7-9xx	O
and	O
single-processor	O
servers	O
sold	O
as	O
Xeon	B-Device
35xx.	O
,	O
in	O
almost	O
identical	O
configurations	O
,	O
replacing	O
the	O
earlier	O
Yorkfield	B-Device
processors	O
.	O
</s>
<s>
The	O
Bloomfield	B-Device
core	B-Device
is	I-Device
closely	O
related	O
to	O
the	O
dual-processor	O
Gainestown	O
,	O
which	O
has	O
the	O
same	O
CPUID	O
value	O
of	O
0106Ax	O
(	O
family	O
6	O
,	O
model	O
26	O
)	O
and	O
which	O
uses	O
the	O
same	O
socket	O
.	O
</s>
<s>
Bloomfield	B-Device
uses	O
a	O
different	O
socket	O
than	O
the	O
later	O
Lynnfield	B-Device
and	O
Clarksfield	B-Device
processors	O
based	O
on	O
the	O
same	O
45nm	B-Algorithm
Nehalem	B-Device
microarchitecture	I-Device
,	O
even	O
though	O
some	O
of	O
these	O
share	O
the	O
same	O
Intel	B-Device
Core	I-Device
i7	I-Device
brand	O
.	O
</s>
<s>
Bloomfield	B-Device
has	O
many	O
new	O
features	O
that	O
represent	O
significant	O
changes	O
from	O
Yorkfield	B-Device
:	O
</s>
<s>
The	O
new	O
LGA	B-Device
1366	I-Device
socket	O
is	O
incompatible	O
with	O
earlier	O
processors	O
.	O
</s>
<s>
On-die	O
memory	B-General_Concept
controller	I-General_Concept
:	O
the	O
memory	O
is	O
directly	O
connected	O
to	O
the	O
processor	O
.	O
</s>
<s>
It	O
is	O
called	O
the	O
uncore	B-General_Concept
part	O
and	O
runs	O
at	O
a	O
different	O
clock	O
(	O
uncore	B-General_Concept
clock	O
)	O
than	O
the	O
execution	O
cores	O
.	O
</s>
<s>
Three	O
channel	O
memory	O
:	O
each	O
channel	O
can	O
support	O
up	O
to	O
two	O
DDR3	O
DIMMs	B-General_Concept
.	O
</s>
<s>
Motherboards	O
for	O
Bloomfield	B-Device
generally	O
have	O
three	O
,	O
four	O
(	O
2	O
,	O
1	O
,	O
1	O
)	O
,	O
or	O
six	O
DIMM	B-General_Concept
slots	O
.	O
</s>
<s>
The	O
front	B-Architecture
side	I-Architecture
bus	I-Architecture
has	O
been	O
replaced	O
by	O
the	O
Intel	B-Architecture
QuickPath	I-Architecture
Interconnect	I-Architecture
interface	O
.	O
</s>
<s>
Motherboards	O
must	O
use	O
a	O
chipset	O
that	O
supports	O
QuickPath	B-Architecture
Interconnect	I-Architecture
.	O
</s>
<s>
"	O
Turbo	B-Device
Boost	I-Device
"	O
technology	O
allows	O
all	O
active	O
cores	O
to	O
intelligently	O
clock	O
themselves	O
up	O
in	O
steps	O
of	O
133	O
MHz	O
over	O
the	O
design	O
clock	O
rate	O
as	O
long	O
as	O
the	O
CPU	O
's	O
predetermined	O
thermal	O
and	O
electrical	O
requirements	O
are	O
still	O
met	O
.	O
</s>
<s>
Re-implemented	O
Hyper-threading	B-Operating_System
.	O
</s>
<s>
Hyperthreading	B-Operating_System
was	O
introduced	O
in	O
the	O
older	O
NetBurst	B-Device
microarchitecture	O
,	O
but	O
omitted	O
from	O
the	O
subsequent	O
Core	B-Device
,	O
which	O
was	O
a	O
descendant	O
of	O
the	O
Pentium	O
III	O
family	O
.	O
</s>
<s>
With	O
hyperthreading	B-Operating_System
enabled	O
,	O
each	O
of	O
the	O
four	O
physical	O
cores	O
can	O
process	O
up	O
to	O
two	O
threads	O
simultaneously	O
,	O
so	O
the	O
processor	O
appears	O
to	O
the	O
OS	O
as	O
eight	O
logical	O
CPUs	O
.	O
</s>
<s>
Only	O
one	O
QuickPath	B-Architecture
interface	O
:	O
not	O
intended	O
for	O
multi-processor	O
motherboards	O
.	O
</s>
<s>
45	B-Algorithm
nm	I-Algorithm
process	I-Algorithm
technology	O
.	O
</s>
<s>
731	O
million	O
transistors	B-Application
.	O
</s>
<s>
Sophisticated	O
power	O
management	O
can	O
place	O
an	O
unused	O
core	B-Device
in	O
a	O
zero-power	O
mode	O
.	O
</s>
<s>
Support	O
for	O
SSE4.2	B-General_Concept
&	O
SSE4.1	B-General_Concept
instruction	O
sets	O
.	O
</s>
<s>
"	O
Turbo	B-Device
boost	I-Device
"	O
can	O
increase	O
the	O
rate	O
on	O
active	O
cores	O
in	O
steps	O
of	O
the	O
base	O
clock	O
(	O
133MHz	O
if	O
not	O
overclocked	O
)	O
up	O
to	O
a	O
predetermined	O
limit	O
for	O
short	O
periods	O
when	O
required	O
,	O
which	O
can	O
be	O
useful	O
with	O
single	O
threaded	O
applications	O
.	O
</s>
<s>
Core	B-Device
clock	O
above	O
those	O
in	O
the	O
table	O
are	O
not	O
guaranteed	O
by	O
Intel	O
.	O
</s>
<s>
The	O
processor	O
has	O
a	O
Thermal	B-General_Concept
Design	I-General_Concept
Power	I-General_Concept
of	O
130W	O
and	O
will	O
slow	O
itself	O
down	O
if	O
this	O
power	O
is	O
exceeded	O
.	O
</s>
<s>
This	O
feature	O
can	O
be	O
disabled	O
from	O
an	O
option	O
in	O
most	O
of	O
the	O
new	O
motherboards	O
 '	O
BIOS	B-Operating_System
.	O
</s>
<s>
The	O
Inquirer	O
managed	O
to	O
get	O
a	O
965	O
engineering	O
sample	O
to	O
a	O
core	B-Device
clock	O
rate	O
of	O
up	O
to	O
4GHz	O
with	O
fan	O
cooling	O
and	O
Turbo	B-Device
Boost	I-Device
.	O
</s>
<s>
IT	O
OC	O
Taiwan	O
overclocked	O
an	O
engineering	O
sample	O
of	O
the	O
965	O
,	O
to	O
4.20GHz	O
with	O
a	O
QPI	B-Architecture
rate	O
of	O
200MHz	O
and	O
a	O
multiplier	O
value	O
of	O
21.0	O
.	O
</s>
<s>
A	O
Core	B-Device
i7	I-Device
940	O
system	O
running	O
at	O
stock	O
clock	O
rates	O
has	O
obtained	O
a	O
3DMark	O
Vantage	O
benchmark	O
CPU	O
score	O
of	O
17,966	O
.	O
</s>
<s>
A	O
Core	B-Device
i7	I-Device
920	O
system	O
scored	O
16,294	O
running	O
at	O
stock	O
clock	O
rates	O
.	O
</s>
<s>
An	O
Intel	B-Device
Core	I-Device
2	I-Device
Extreme	O
QX9770	O
,	O
a	O
very	O
expensive	O
member	O
of	O
the	O
previous	O
generation	O
of	O
Intel	O
processors	O
(	O
costing	O
over	O
four	O
times	O
the	O
price	O
of	O
the	O
920	O
at	O
its	O
launch	O
)	O
,	O
scored	O
13,182	O
also	O
running	O
at	O
stock	O
clock	O
rates	O
.	O
</s>
<s>
AnandTech	O
tested	O
the	O
Intel	B-Architecture
QuickPath	I-Architecture
Interconnect	I-Architecture
(	O
4.8GT/s	O
version	O
)	O
and	O
found	O
the	O
copy	O
bandwidth	O
using	O
triple-channel	B-Architecture
1,066	O
MHz	O
DDR3	O
was	O
12.0GB/s	O
.	O
</s>
<s>
A	O
3.0GHz	O
Core	B-Device
2	I-Device
Quad	O
system	O
using	O
dual-channel	B-Architecture
1066MHz	O
DDR3	O
achieved	O
.	O
</s>
<s>
Maximum	O
PC	O
has	O
discovered	O
that	O
Intel	O
has	O
unlocked	O
the	O
QPI	B-Architecture
clock	O
and	O
memory	O
multipliers	O
on	O
retail	O
920s	O
and	O
940s	O
.	O
</s>
<s>
The	O
Intel	O
Core	O
i7-975	O
Extreme	O
Edition	O
was	O
considered	O
the	O
world	O
's	O
fastest	O
desktop	O
processor	O
(	O
until	O
the	O
i7-980x	B-Device
)	O
by	O
a	O
review	O
from	O
Hot	O
Hardware	O
.	O
</s>
<s>
It	O
runs	O
at	O
a	O
clock	O
rate	O
of	O
3.33GHz	O
with	O
Turbo	B-Device
Boost	I-Device
clock	O
rates	O
running	O
the	O
processor	O
up	O
3.46GHz	O
with	O
all	O
four	O
cores	O
put	O
at	O
work	O
and	O
3.6GHz	O
with	O
a	O
single	O
core	B-Device
at	O
work	O
.	O
</s>
<s>
The	O
processor	O
was	O
overclocked	O
to	O
4.1GHz	O
while	O
keeping	O
a	O
50°C	O
(	O
122°F	O
)	O
core	B-Device
temperature	O
with	O
the	O
stock	O
cooling	O
unit	O
.	O
</s>
<s>
The	O
process	O
of	O
overclocking	B-Application
the	O
Bloomfield	B-Device
architecture	O
is	O
similar	O
to	O
that	O
of	O
the	O
AMD	O
architecture	O
due	O
to	O
the	O
on-die	O
MCH	O
.	O
</s>
<s>
Over-clocking	B-Application
will	O
be	O
possible	O
with	O
the	O
900	O
series	O
and	O
a	O
motherboard	O
equipped	O
with	O
the	O
X58	B-Device
chipset	O
.	O
</s>
<s>
In	O
early	O
October	O
2008	O
,	O
reports	O
surfaced	O
that	O
it	O
will	O
not	O
be	O
possible	O
to	O
use	O
"	O
performance	O
"	O
DDR3	O
DIMMs	B-General_Concept
that	O
require	O
voltages	O
higher	O
than	O
1.65v	O
,	O
because	O
the	O
integrated	B-General_Concept
memory	I-General_Concept
controller	I-General_Concept
within	O
the	O
Core	B-Device
i7	I-Device
will	O
be	O
damaged	O
.	O
</s>
<s>
Bloomfield	B-Device
has	O
three	O
memory	O
channels	O
,	O
and	O
the	O
channel	O
bandwidth	O
can	O
be	O
selected	O
by	O
setting	O
the	O
memory	O
multiplier	O
.	O
</s>
<s>
The	O
Core	B-Device
i7	I-Device
Bloomfield	B-Device
does	O
not	O
support	O
error-correcting	B-General_Concept
memory	I-General_Concept
.	O
</s>
<s>
Some	O
motherboards	O
with	O
an	O
LGA	B-Device
1366	I-Device
socket	O
support	O
both	O
Core	B-Device
i7	I-Device
and	O
the	O
Xeon	B-Device
35xx	O
and	O
55xx	O
series	O
processors	O
,	O
and	O
advertise	O
support	O
for	O
ECC	B-General_Concept
memory	I-General_Concept
.	O
</s>
<s>
However	O
ECC	O
functionality	O
is	O
only	O
available	O
if	O
a	O
Xeon	B-Device
is	O
installed	O
,	O
not	O
if	O
a	O
Core	B-Device
i7	I-Device
is	O
installed	O
.	O
</s>
<s>
The	O
Core	B-Device
i7	I-Device
950	O
and	O
the	O
Core	B-Device
i7	I-Device
975	O
Extreme	O
Edition	O
were	O
introduced	O
in	O
March	O
2009	O
with	O
prices	O
similar	O
to	O
the	O
prices	O
for	O
the	O
940	O
and	O
965	O
Extreme	O
Edition	O
,	O
respectively	O
,	O
but	O
with	O
better	O
performance	O
in	O
each	O
case	O
.	O
</s>
