User`s guide

Chapter 1 Hardware Installation

Step 2 Configure CPU Speed

If using two CPUs with different speed ratings, set the

motherboard jumpers to the lower CPU speed. When JP6

is open, the system bus frequency is determined by the

processors. When JP6 is shorted, the system bus frequency

is forced to be 66 MHz.

Important

Please contact American Megatrends technical support

at 770-246-8600 to support a CPU running at other

speeds.

CPU Internal

Frequency if Bus

Frequency is 100 MHz

CPU Internal

Frequency if Bus

Frequency is 66 MHz

JP8

350 MHz 233 MHz Short Pins 1-2

Open Pins 3-4

Open Pins 5-6

Short Pins 7-8

400 MHz 266 MHz Open Pins 1-2

Short Pins 3-4

Short Pins 5-6

Short Pins 7-8

450 MHz 300 MHz Open Pins 1-2

Short Pins 3-4

Open Pins 5-6

Short Pins 7-8

500 MHz 330 MHz Open Pins 1-2

Open Pins 3-4

Short Pins 5-6

Short Pins 7-8

Cont’d