ASRock X38TurboTwins-WiFi User Manual - Page 27

FSB1 Jumper

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FSB1 Jumper (FSB1, 3-pin jumper, see p.11 No. 38) FSB2 Jumper (FSB2, 5-pin jumper, see p.11 No. 38) FSB3 Jumper (FSB3, 5-pin jumper, see p.11 No. 38) 1_2 FSB3 FSB2 1_2 FSB1 1_2 Default When you mount a FSB800 or FSB1066 CPU, and try to overclock to FSB1333 or FSB1600 (by BIOS setting) you may face the problem, that DRAM frequency will be overclocked very high. Please use jumper to force NB to be strapped at higher frequency, so the DRAM can work at lower frequency. If you want to overclock the CPU you adopt to FSB1066 on this motherboard, you need to adjust the jumpers. Please short pin4, pin5 for FSB2 jumper and pin4, pin5 for FSB3 jumper. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings. 4_5 FSB3 FSB2 4_5 FSB1 1_2 If you want to overclock the CPU you adopt to FSB1333 on this motherboard, you need to adjust the jumpers. Please short pin3, pin4 for FSB2 jumper and pin4, pin5 for FSB3 jumper. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings. 4_5 FSB3 FSB2 3_4 FSB1 1_2 If you want to overclock the CPU you adopt to FSB1600 on this motherboard, you need to adjust the jumpers. Please short pin3, pin4 for FSB2 jumper and pin3, pin4 for FSB3 jumper. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings. 3_4 FSB3 FSB2 3_4 FSB1 1_2 27

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FSB1 Jumper
(FSB1, 3-pin jumper, see p.11 No. 38)
FSB2 Jumper
(FSB2, 5-pin jumper, see p.11 No. 38)
FSB3 Jumper
(FSB3, 5-pin jumper, see p.11 No. 38)
When you mount a FSB800 or FSB1066 CPU, and try to overclock to FSB1333 or
FSB1600 (by BIOS setting) you may face the problem, that DRAM frequency will
be overclocked very high. Please use jumper to force NB to be strapped at higher
frequency, so the DRAM can work at lower frequency.
If you want to overclock the CPU you adopt to FSB1066 on this motherboard, you
need to adjust the jumpers. Please short pin4, pin5 for FSB2 jumper and pin4, pin5 for
FSB3 jumper. Otherwise, the CPU may not work properly on this motherboard.
Please refer to below jumper settings.
If you want to overclock the CPU you adopt to FSB1333 on this motherboard, you
need to adjust the jumpers. Please short pin3, pin4 for FSB2 jumper and pin4, pin5 for
FSB3 jumper. Otherwise, the CPU may not work properly on this motherboard.
Please refer to below jumper settings.
If you want to overclock the CPU you adopt to FSB1600 on this motherboard, you
need to adjust the jumpers. Please short pin3, pin4 for FSB2 jumper and pin3, pin4
for FSB3 jumper. Otherwise, the CPU may not work properly on this motherboard.
Please refer to below jumper settings.
Default
1_2
FSB3
1_2
FSB1
1_2
FSB2
4_5
FSB3
1_2
FSB1
4_5
FSB2
4_5
FSB3
1_2
FSB1
3_4
FSB2
3_4
FSB3
1_2
FSB1
3_4
FSB2