sdgoodwin
01-23-2000, 09:52 AM
I've been looking at the manual for my new AOpen AX59Pro motherboard and it has occured to me that perhaps more settings are available for FSB speed, CPU core voltage and DRAM clocking than are listed.
For example, CPU voltage is set through 5 switches, which would give a maximum of 32 (2^5) settings, yet only 31 settings are listed in the manual. According to the manual, 8 FSB speeds are possible (66MHz to 124MHz), yet four jumpers are used to set the FSB, which implies 16 FSB speeds are possible (2^4=16). There's also the DRAM synchronisation jumpers; you can synchronise your RAM with either the CPU or AGP clocks (2 settings), yet 2 jumpers are present which means 4 settings could be possible.
Can anyone tell me if any settings other than those listed in the manual are possible, because I see no reason for having redundant jumpers.
sdgoodwin
P.S. - Does anyone know if changing the I/O voltage jumper (voltage supplied to the chipset, cache ram and for cpu i/o) from 3.31V to 3.48V would assist in overclocking the FSB to >100MHz? I've not been able to use 112MHz stably, and my suspiscions were raised by this jumper's entry in the manual, which says that it is (I quote) 'reserved for testing purposes only'.
For example, CPU voltage is set through 5 switches, which would give a maximum of 32 (2^5) settings, yet only 31 settings are listed in the manual. According to the manual, 8 FSB speeds are possible (66MHz to 124MHz), yet four jumpers are used to set the FSB, which implies 16 FSB speeds are possible (2^4=16). There's also the DRAM synchronisation jumpers; you can synchronise your RAM with either the CPU or AGP clocks (2 settings), yet 2 jumpers are present which means 4 settings could be possible.
Can anyone tell me if any settings other than those listed in the manual are possible, because I see no reason for having redundant jumpers.
sdgoodwin
P.S. - Does anyone know if changing the I/O voltage jumper (voltage supplied to the chipset, cache ram and for cpu i/o) from 3.31V to 3.48V would assist in overclocking the FSB to >100MHz? I've not been able to use 112MHz stably, and my suspiscions were raised by this jumper's entry in the manual, which says that it is (I quote) 'reserved for testing purposes only'.