12
A
A
X
X
4
4
P
P
E
E
R
R
/
/
A
A
X
X
4
4
P
P
E
E
R
R
-
-
N
N
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
F
F
e
e
a
a
t
t
u
u
r
r
e
e
H
H
i
i
g
g
h
h
l
l
i
i
g
g
h
h
t
t
CPU
Supports Intel
®
Socket 478 Pentium
®
4 1.4GHz~2.8GHz+ with 400/533MHz
designed for Socket 478
technology.
Chipset
The 845PE chipset contains two core components designed for the desktop platform: the 845PE Graphics Memory Controller
Hub (GMCH), and the Intel I/O Controller Hub 4 (ICH4). These components are interconnected via an Intel proprietary interface
called Hub Interface. The Hub Interface is designed into the 845PE chipset to provide an efficient, high bandwidth
communication channel between the GMCH and the ICH4. The GMCH component provides the processor interface, system
memory interface, Hub interface, AGP interface, and an integrated graphics device with analog and digital display ports. The
ICH4 integrates a Universal Serial Bus 2.0 controller, Ultra ATA/100 Controller, Low Pin Count interface, Firmware Hub Flash
BIOS interface controller, PCI interface controller, integrated LAN, AC’97 digital controller, and a Hub Interface for
communication with the GMCH.
