MSI 661FM2-LSR User Guide - Page 15

Central Processing Unit: CPU, Memory, DDR266, DDR333, DDR400 - socket 478

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Page 15 highlights

Hardware Setup Central Processing Unit: CPU The mainboard supports Intel® Pentium® 4 Prescott & Northwood processor in the 478 pin package. The mainboard uses a CPU socket called PGA478 for easy CPU installation. When you are installing the CPU, make sure the CPU has a heat sink and a cooling fan attached on the top to prevent overheating. If you do not find the heat sink and cooling fan, contact your dealer to purchase and install them before turning on the computer. (For the latest information about CPU, please visit http://www. msi.com.tw/program/products/mainboard/mbd/pro_mbd_cpu_support.php ) CPU Core Speed Derivation Procedure If CPU Clock Core/Bus ratio then CPU core speed = 100MHz = 17 = Host Clock x Core/Bus ratio = 100MHz x 17 = 1.7 GHz Memory Speed/CPU FSB Support Matrix Memory FSB DDR 266 400 MHz OK 533 MHz OK 800 MHz OK DDR 333 OK OK OK DDR 400 OK OK OK MSI Reminds You... Overheating Overheating will seriously damage the CPU and system. Always make sure the cooling fan can work properly to protect the CPU from overheating. Replacing the CPU While replacing the CPU, always turn off the ATX power supply or unplug the power supply's power cord from grounded outlet first to ensure the safety of CPU. 2-3

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2-3
Hardware Setup
Central Processing Unit: CPU
CPU Core Speed Derivation Procedure
If
CPU Clock
=
100MHz
Core/Bus ratio
=
17
then
CPU core speed
=
Host Clock x
Core/Bus ratio
=
100MHz
x
17
=
1.7 GHz
The mainboard supports Intel
®
Pentium
®
4 Prescott & Northwood processor in the 478
pin package. The mainboard uses a CPU socket called PGA478 for easy CPU installation.
When you are installing the CPU,
make sure the CPU has a heat sink and a
cooling fan attached on the top to prevent overheating.
If you do not find the
heat sink and cooling fan, contact your dealer to purchase and install them before
turning on the computer. (For the latest information about CPU, please visit http://www.
msi.com.tw/program/products/mainboard/mbd/pro_mbd_cpu_support.php )
Memory Speed/CPU FSB Support Matrix
FSB
Memory
DDR266
400 MHz
DDR333
533 MHz
OK
OK
OK
800 MHz
OK
OK
DDR400
OK
OK
OK
OK
MSI Reminds You...
Overheating
Overheating will seriously damage the CPU and system. Always make
sure the cooling fan can work properly to protect the CPU from
overheating.
Replacing the CPU
While replacing the CPU, always turn off the ATX power supply or unplug
the power supply’s power cord from grounded outlet first to ensure the
safety of CPU.