DamienC
Experienced Member
I finally got my 83MHz Pentium Overdrive system working properly. It runs nice and stable at the stock 83MHz speed.
I'd like to squeeze a little more performance out of this thing through overclocking though. Normally, the PODP runs with a 2.5x multiplier and 33MHz bus, giving the 83MHz clock speed. From what I've gathered online, the multiplier can't be changed and I'm stuck with changing the bus speed to overclock.
My goal speed is 100MHz, which I can achieve by setting the bus to 40MHz. My system booted this way, but it was very unstable: Quake bombed immediately at runtime with a page fault, and Doom would run but there would be random wall textures everywhere then it would crap out with texture-related errors.
I'm pretty sure it's because the video card I'm using is PCI (Diamond Stealth 3D 2000) and the PCI bus is I think unstable at anything above 33MHz.
I'd still like the 100MHz clock speed. Is there a way to get this system running stable at this speed? Here's what I think are my only options:
Any ideas?
I'd like to squeeze a little more performance out of this thing through overclocking though. Normally, the PODP runs with a 2.5x multiplier and 33MHz bus, giving the 83MHz clock speed. From what I've gathered online, the multiplier can't be changed and I'm stuck with changing the bus speed to overclock.
My goal speed is 100MHz, which I can achieve by setting the bus to 40MHz. My system booted this way, but it was very unstable: Quake bombed immediately at runtime with a page fault, and Doom would run but there would be random wall textures everywhere then it would crap out with texture-related errors.
I'm pretty sure it's because the video card I'm using is PCI (Diamond Stealth 3D 2000) and the PCI bus is I think unstable at anything above 33MHz.
I'd still like the 100MHz clock speed. Is there a way to get this system running stable at this speed? Here's what I think are my only options:
- Somehow figure out how to change the multiplier to 2x with a 50MHz bus, or 3x with a 33MHz bus. I doubt changing the multiplier is possible, but it would probably run the most stable with 33MHz x 3.
- Swap out the PCI video card for an ISA or VLB video card and run the system with a 40MHz bus. I'm reluctant to do this simply because I don't feel like hunting down another card.
Any ideas?