Gigabyte GA-7N400 User Manual - Page 18

Step 1: Set System Jumper CLK_SW & CLK_RATIO

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English Step 1: Set System Jumper (CLK_SW) & (CLK_RATIO) The clock ratio can be switched by CLK_RATIO and refer to below table.The system bus frequency can be switched at 100MHz and auto by adjusting CLK_SW. Default Setting : Auto (X X X X X X) CLK_RATIO 6 54 321 Default Setting : OFF CLK_SW ON ON OFF CLK_SW ON AUTO OFF 100MHz AUTO : Supports FSB 400/333/266 MHz CPU 100MHz : Fix FSB 200MHz CPU CLK_RATIO O: ON / X :OFF RATIO 1 2 3 4 56 AUTO X X X X XX (Default) 5x O O X O OO 5.5x X O X O OO 6x O X X O OO 6.5x X X X O OO 7x O O O X OO 7.5x X O O X OO 8x O X O X OO 8.5x X X O X OO 9x O O X X OO 9.5x X O X X OO 10x O X X X OO 10.5x X X X X OO 11x O O O O OO 11.5x X O O O OO 12x O X O O OO 12.5x X X O O OO 13x OOX O XO 13.5x X OX O XO 14x OX X O XO 15x OOO X XO 16x OX O X XO 16.5x X X O X XO 17x OOX X XO 18x X OX X XO You must set CLK_SW to 100MHz when you used FSB 200MHz CPU. MNote: In order to BIOS can auto detecting when your CPU mutiplier over 18x, please adjust mutiplier swich in CLK_RATIO to "AUTO." N400 Pro2 / N400 Series Motherboard - 14 - 7n400pro2_1002_q.p65 14 2003/7/4, ¤U¤È 03:27

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- 14 -
N400 Pro2 / N400 Series Motherboard
English
Step 1: Set System Jumper (CLK_SW) & (CLK_RATIO)
The clock ratio can be switched by CLK_RATIO and refer to
below table.The system bus frequency can
be switched at 100MHz and auto by adjusting CLK_SW.
Default Setting :
Auto (X X X X X X)
M
Note: In order to BIOS can auto detecting
when
your CPU mutiplier over 18x, please adjust mutiplier
swich in CLK_RATIO to "AUTO."
RATIO
1
2
3
4
5
6
AUTO
X
X
X
X
X
X
(Default)
5x
O
O
X
O
O
O
5.5x
X
O
X
O
O
O
6x
O
X
X
O
O
O
6.5x
X
X
X
O
O
O
7x
O
O
O
X
O
O
7.5x
X
O
O
X
O
O
8x
O
X
O
X
O
O
8.5x
X
X
O
X
O
O
9x
O
O
X
X
O
O
9.5x
X
O
X
X
O
O
10x
O
X
X
X
O
O
10.5x
X
X
X
X
O
O
11x
O
O
O
O
O
O
11.5x
X
O
O
O
O
O
12x
O
X
O
O
O
O
12.5x
X
X
O
O
O
O
13x
O
O
X
O
X
O
13.5x
X
O
X
O
X
O
14x
O
X
X
O
X
O
15x
O
O
O
X
X
O
16x
O
X
O
X
X
O
16.5x
X
X
O
X
X
O
17x
O
O
X
X
X
O
18x
X
O
X
X
X
O
O: ON / X :OFF
CLK_RATIO
You must set CLK_SW to 100MHz
when you used FSB 200MHz CPU.
CLK_SW
ON
AUTO
OFF
100MHz
AUTO : Supports FSB 400/333/266 MHz CPU
100MHz : Fix FSB 200MHz CPU
CLK_SW
Default
Setting : OFF
OFF
ON
5
ON
2
3
4
CLK_RATIO
6
1
7n400pro2_1002_q.p65
2003/7/4, ¤U¤È 03:27
14