<s>
Around	O
the	O
time	O
that	O
the	O
Pentium	B-General_Concept
III	I-General_Concept
processor	O
was	O
introduced	O
,	O
Intel	O
's	O
Xeon	B-Device
line	O
diverged	O
from	O
its	O
line	O
of	O
desktop	O
processors	O
,	O
which	O
at	O
the	O
time	O
was	O
using	O
the	O
Pentium	O
branding	O
.	O
</s>
<s>
The	O
divergence	O
was	O
implemented	O
by	O
using	O
different	O
sockets	O
;	O
since	O
then	O
,	O
the	O
sockets	O
for	O
Xeon	B-Device
chips	O
have	O
tended	O
to	O
remain	O
constant	O
across	O
several	O
generations	O
of	O
implementation	O
.	O
</s>
<s>
Intel	O
's	O
initial	O
preferred	O
chipset	O
for	O
Pentium	B-General_Concept
III	I-General_Concept
Xeon	B-Device
was	O
the	O
840	O
.	O
</s>
<s>
The	O
Pentium	B-General_Concept
III	I-General_Concept
Xeon	B-Device
bus	O
protocol	O
allowed	O
four	O
processors	O
on	O
the	O
same	O
bus	O
,	O
so	O
the	O
440GX	O
AGPset	O
could	O
be	O
used	O
in	O
four-CPU	O
systems	O
;	O
the	O
limit	O
of	O
2GB	O
of	O
main	O
memory	O
remained	O
.	O
</s>
<s>
These	O
support	O
Slot	B-Device
2	I-Device
.	O
</s>
<s>
It	O
supported	O
up	O
to	O
8	O
Pentium	B-General_Concept
III	I-General_Concept
Xeon	B-Device
processors	O
on	O
two	O
busses	O
and	O
maintained	O
cache	O
coherency	O
between	O
them	O
.	O
</s>
<s>
E7500	O
corresponded	O
to	O
the	O
first	O
Northwood-based	O
Pentium4	O
Xeons	B-Device
,	O
E7501	O
is	O
essentially	O
identical	O
but	O
supports	O
faster	O
FSB	O
and	O
memory	O
.	O
</s>
<s>
The	O
E7320	O
,	O
E7520	O
and	O
E7525	O
chipsets	O
correspond	O
to	O
Prescott-based	O
Pentium4	O
Xeons	B-Device
,	O
and	O
differ	O
mainly	O
in	O
their	O
PCI	O
Express	O
support	O
.	O
</s>
<s>
These	O
support	O
Socket	B-Device
604	I-Device
.	O
</s>
<s>
The	O
Intel	O
875P	O
chipset	O
was	O
used	O
in	O
some	O
two-socket	O
motherboards	O
for	O
Xeons	B-Device
.	O
</s>
<s>
Intel	O
E7210	O
is	O
server	O
variant	O
of	O
875P	O
(	O
Socket	O
478	O
)	O
without	O
AGP	O
,	O
it	O
can	O
be	O
used	O
in	O
dual	O
Socket	B-Device
604	I-Device
configurations	O
.	O
</s>
<s>
As	O
Intel	O
did	O
n't	O
have	O
a	O
4P-capable	O
chipset	O
for	O
NetBurst-based	O
Xeons	B-Device
until	O
2005	O
,	O
for	O
three	O
years	O
ServerWorks	O
GC-HE	O
served	O
as	O
the	O
de	O
facto	O
standard	O
MP	O
chipset	O
,	O
even	O
being	O
used	O
in	O
Intel	O
's	O
own	O
motherboards	O
(	O
SPSH4	O
and	O
SRSH4	O
)	O
.	O
</s>
<s>
These	O
chipsets	O
use	O
a	O
'	O
dual	B-Architecture
independent	I-Architecture
bus	I-Architecture
 '	O
design	O
,	O
in	O
which	O
each	O
socket	O
has	O
its	O
own	O
connection	O
to	O
the	O
chipset	O
.	O
</s>
<s>
These	O
use	O
the	O
LGA	B-Device
771	I-Device
socket	O
.	O
</s>
<s>
Product	O
name	O
Codename	O
FSB	O
speed	O
Snoop	B-General_Concept
filter	I-General_Concept
Memory	O
support	O
High-speed	O
interfaces	O
provided	O
Preferred	O
IOCH	O
5000PBlackford667	O
,	O
1066	O
,	O
1333	O
Four	O
channels	O
of	O
FB-DIMM	O
at	O
533	O
or	O
667	O
MHz	O
,	O
up	O
to	O
64GB	O
Six	O
PCIe	O
×4	O
ports	O
,	O
of	O
which	O
two	O
are	O
normally	O
used	O
for	O
communication	O
with	O
IOCH	O
,	O
and	O
a	O
seventh	O
×4	O
port	O
only	O
for	O
IOCH.631xESB	O
or	O
632xESB	O
5000ZTwo	O
channels	O
of	O
FB-DIMM	O
at	O
533	O
or	O
667	O
MHz	O
,	O
up	O
to	O
16GB	O
Four	O
PCIe	O
×4	O
ports	O
,	O
of	O
which	O
two	O
are	O
normally	O
used	O
for	O
communication	O
with	O
IOCH	O
,	O
and	O
a	O
fifth	O
×4	O
port	O
only	O
for	O
IOCH	O
.	O
</s>
<s>
5000X	O
Greencreek	O
A	O
snoop	B-General_Concept
filter	I-General_Concept
comprising	O
about	O
1MB	O
of	O
SRAM	O
for	O
coverage	O
of	O
16MB	O
of	O
cache	O
.	O
</s>
<s>
5100	O
San	O
Clemente	O
Two	O
channels	O
of	O
registered	O
ECC	O
DDR2	O
533	O
or	O
667	O
MT/s	O
,	O
up	O
to	O
48GB	O
6	O
PCIe	O
×4	O
ports	O
,	O
plus	O
one	O
×4	O
port	O
reserved	O
for	O
IOCH	O
ICH9R	O
5400	O
Seaburg	O
1066	O
,	O
1333	O
,	O
1600	O
A	O
more	O
advanced	O
snoop	B-General_Concept
filter	I-General_Concept
comprising	O
about	O
1.6MB	O
of	O
SRAM	O
for	O
coverage	O
of	O
24MB	O
of	O
cache	O
.	O
</s>
<s>
Launch	O
name	O
Codename	O
FSB	O
speed	O
Snoop	B-General_Concept
filter	I-General_Concept
Memory	O
support	O
Fast	O
I/O	O
IOCH	O
7300	O
Clarksboro	O
1066	O
A	O
very	O
sophisticated	O
snoop	B-General_Concept
filter	I-General_Concept
,	O
comprising	O
4.5MB	O
of	O
SRAM	O
for	O
coverage	O
of	O
64MB	O
of	O
cache	O
.	O
</s>
<s>
The	O
3450	O
chipset	O
is	O
also	O
compatible	O
with	O
an	O
Intel	B-Device
Core	I-Device
i5	I-Device
or	O
Intel	B-Device
Core	I-Device
i3	I-Device
processor	O
.	O
</s>
<s>
The	O
Nehalem-based	O
Xeons	B-Device
for	O
dual-socket	O
systems	O
,	O
initially	O
launched	O
as	O
the	O
Xeon	B-Device
55xx	O
series	O
,	O
feature	O
a	O
very	O
different	O
system	O
structure	O
:	O
the	O
memory	O
controllers	O
are	O
on	O
the	O
CPU	O
,	O
and	O
the	O
CPUs	O
can	O
communicate	O
with	O
one	O
another	O
as	O
peers	O
without	O
going	O
via	O
the	O
chipset	O
.	O
</s>
<s>
The	O
Intel	O
C200	O
series	O
chipsets	O
that	O
support	O
the	O
Intel	B-Device
Xeon	I-Device
E3-1200	O
CPU	O
family	O
.	O
</s>
<s>
The	O
Intel	O
C600	O
series	O
chipsets	O
support	O
the	O
Intel	B-Device
Xeon	I-Device
E5-2600	O
CPU	O
family	O
.	O
</s>
<s>
The	O
Intel	O
Communications	O
8900	O
series	O
chipsets	O
that	O
support	O
the	O
Gladden	O
Intel	B-Device
Xeon	I-Device
E3-11xx	O
or	O
Sandy	O
Bridge-EP/EN	O
Intel	B-Device
Xeon	I-Device
E5-2xxx	O
CPU	O
families	O
.	O
</s>
<s>
The	O
Intel	O
C200	O
series	O
chipsets	O
that	O
support	O
the	O
Intel	B-Device
Xeon	I-Device
E3-1200v2	O
CPU	O
family	O
.	O
</s>
<s>
The	O
Intel	O
C220	O
series	O
chipsets	O
support	O
the	O
Intel	B-Device
Xeon	I-Device
E3-1200v3	O
CPU	O
family	O
.	O
</s>
<s>
The	O
Intel	O
C230	O
series	O
chipsets	O
support	O
the	O
Intel	B-Device
Xeon	I-Device
E3-1200v5	O
CPU	O
family	O
.	O
</s>
<s>
Both	O
,	O
the	O
C232	O
and	O
the	O
C236	O
support	O
the	O
LGA	B-Device
1151	I-Device
socket	O
.	O
</s>
<s>
The	O
Intel	O
C246	O
series	O
chipsets	O
support	O
the	O
Intel	B-Device
Xeon	I-Device
E-2100	O
series	O
of	O
CPUs	O
.	O
</s>
