archsan wrote:Vetz, thanks for the scan. I have a couple quick questions:
How do you get to 25 MHz? Is that an undocumented jumper combination […]
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vetz wrote:
This board is my favorite Socket 5 board. It has a wide array of BIOS options and you can downclock it to 25mhz!
Vetz, thanks for the scan. I have a couple quick questions:
How do you get to 25 MHz? Is that an undocumented jumper combination?
Also, since there is no multiplier choice, when you set a P90 or P100 at 40 MHz bus, will it give you 60 MHz?
Yes, 40mhz bus setting gives you 60mhz.
To get 25mhz just need to use some undocumented jumper settings:
Pentium 25mhz 1-2, 1-2, 1-2
Pentium 40mhz 1-2, 1-2, 2-3
Pentium 50mhz 2-3, 2-3, 2-3
With all the BIOS settings set to max and no cache or turbo settings modified you get the following speed spectrum just from multiplier&FSB settings (Pentium's above 100mhz runs in Powerleap adapter, but Overdrive CPUs will work as well):
Benchmarks are based on Phil's VGA benchmark (with 3DBench scores included).
If you start to modify cache, turbo and BIOS settings you can set the speed very precisely at the required level between a 386SX all the way to a quick Pentium.