ASRock P41C-DE Quick Installation Guide - Page 18

Standard Setting, Overclocking Setting

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FSB2 / FSB3 Jumper (FSB2, 5-pin jumper, see p.2 No. 29) (FSB3, 5-pin jumper, see p.2 No. 29) Default Standard Setting: If you adopt below DRAM / CPU configuration on this motherboard, you need to adjust the jumpers. Please follow the instructions below to set up the jumpers. Otherwise, the CPU and memory module may not work properly on this motherboard. DRAM CPU Jumper Settings DDR2 1066 FSB1066 FSB2: 1-2 FSB3: 2-3 DDR3 1333 / DDR2 1066 FSB1333 FSB2: 4-5 FSB3: 1-2 Overclocking Setting: When you mount a FSB800 or FSB1066 CPU, and try to overclock to FSB1333 (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 (except FSB533-CPU) 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 (except FSB533-CPU) 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. English 18 ASRock P41C-DE Motherboard

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ASRock
P41C-DE
Motherboard
English
English
English
English
English
Standard Setting:
If you adopt below DRAM / CPU configuration on this motherboard, you need to
adjust the jumpers. Please follow the instructions below to set up the jumpers.
Otherwise, the CPU and memory module may not work properly on this
motherboard.
DRAM
DDR2 1066
DDR3 1333 / DDR2 1066
CPU
FSB1066
FSB1333
Jumper
Settings
FSB2: 1-2
FSB2: 4-5
FSB3: 2-3
FSB3: 1-2
Overclocking Setting:
When you mount a FSB800 or FSB1066 CPU, and try to overclock to FSB1333 (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 (except FSB533-CPU) 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 (except FSB533-CPU) 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.
FSB2 / FSB3 Jumper
(FSB2, 5-pin jumper, see p.2 No. 29)
(FSB3, 5-pin jumper, see p.2 No. 29)
Default