Installing Processor - AOpen AX4B-533 Easy Installation Manual

3. Installing Processor

This socket supports Micro-FC-PGA2 package CPU, which is the latest CPU package
developed by Intel. Other forms of CPU package are impossible to be fitted in.
CPU socket lever
4. Installing CPU & System Fan
Plug in the CPU fan cable to the 3-pin CPUFAN1 connector. If you have chassis fan, you
can also plug it in SYSFAN2 or SYSFAN3 connector.
SYSFAN3 Connector
1.
Pull up the CPU socket lever and up to
90-degree angle.
2.
Locate Pin 1 in the socket and look for
a (golden) cut edge on the CPU upper
interface. Match Pin 1 and cut edge.
Then insert the CPU into the socket.
3.
Press down the CPU socket lever and
finish CPU installation.
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well,
you may damage the CPU.
SYSFAN2 Connector
CPUFAN1 Connector
Note: Some CPU fans do not have
sensor pin so they cannot support fan
monitoring.
5. Setting CPU Voltage & Frequency
Setting CPU Core Voltage
This motherboard supports CPU VID function. The CPU core voltage will be automatically
detected and the range is from 1.10V to 1.85V. It is not necessary to set CPU core
voltage.
Setting CPU Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency through the
BIOS setup, and no jumpers or switches are needed.
BIOS Setup > Frequency / Voltage Control > CPU Speed Setting
Core Frequency = CPU FSB Clock * CPU Ratio
CPU Ratio
CPU FSB
Northwood CPU
CPU Core
Pentium 4 1.6G 1600MHz
Pentium 4 1.6G 1600MHz
Pentium 4 1.7G 1700MHz
Pentium 4 1.8G 1800MHz
Pentium 4 2.0G 2000MHz
Pentium 4 2.2G 2200MHz
Pentium 4 2.26G 2260MHz
Pentium 4 2.4G 2400MHz
Pentium 4 2.4G 2400MHz
Pentium 4 2.53G 2530MHz
Pentium 4 2.66G 2660MHz
Pentium 4 2.8G 2800MHz
Willamette CPU Core
CPU Frequency
Pentium 4 1.5G 1500MHz
GND
+12V
Pentium 4 1.6G 1600MHz
SENSOR
Pentium 4 1.7G 1700MHz
Pentium 4 1.8G 1800MHz
Pentium 4 1.9G 1900MHz
Pentium 4 2.0G 2000MHz
Celeron CPU Core
CPU Frequency
1.7G 1700MHz
1.8G 1800MHz
8x, 9x, 10x... 21x, 22x, 23x, 24x
100~248MHz by 1MHz stepping
FSB System
Ratio
Clock Bus
100MHz 400MHz 16x
133MHz 533MHz 12x
133MHz 533MHz 13x
100MHz 400MHz 18x
100MHz 400MHz 20x
100MHz 400MHz 22x
133MHz 533MHz 17x
100MHz 400MHz 24x
133MHz 533MHz 18x
133MHz 533MHz 19x
133MHz 533MHz 20x
133MHz 533MHz 21x
FSB System
Ratio
Clock Bus
100MHz 400MHz 15x
100MHz 400MHz 16x
100MHz 400MHz 17x
100MHz 400MHz 18x
100MHz 400MHz 19x
100MHz 400MHz 20x
FSB System
Ratio
Clock Bus
100MHz 400MHz 17x
100MHz 400MHz 18x
®
Warning: Intel 845E
chipset supports maximum
400MHz (100MHz*4) /
533MHz (133MHz*4)
system bus and 66MHz
AGP clock; higher clock
setting may cause serious
system damage
Note: Since the latest
processor, Northwood,
would detect the clock ratio
automatically, you may not
be able to adjust the clock
ratio in BIOS manually.