I've tried to overclock my Pentium P75 but have had no luck. On the motherboard I've found the relevent jumpers and I tried to set it to 1.5x66 and 2x50 but nothing happens, it does not even boot up. The original settings were 1.5x50. I was just wondering if my ageing 75 was overclockable. If I can get it to 100Mhz I'll be happy.
The motherboard is a Triton board from 1995. and the bios is AWARD from 1995.
Do I need to change any other jumpers on the m/b apart from the bus speed and clock multiplier or is it just not posible.
I have this same setup, basically. With the exception of the Award BIOS, actually. From what I understand, Intel made some P-75's, and possibly other flavors, that were intentionally unable to be overclocked. I believe it was done by the omition of a certain pin on the processor. I have the same results as you when I set it to anything but what the chip wants (black screen and no boot-up). Though I did try to overclock it on an Asus TX97-E and got it up to 83MHz, the board fizzled out too soon to try anything else.
So, in short, I believe it was an intended shortcoming of the P5-75 (at least some of them) by Intel to prevent overclocking and remarking of the chips.
Jamal Akhtar wrote: > I've tried to overclock my Pentium P75 but have had no luck. On the > motherboard I've found the relevent jumpers and I tried to set it to > 1.5x66 and 2x50 but nothing happens, it does not even boot up. The > original settings were 1.5x50. I was just wondering if my ageing 75 > was overclockable. If I can get it to 100Mhz I'll be happy.
> The motherboard is a Triton board from 1995. and the bios is AWARD > from 1995.
> Do I need to change any other jumpers on the m/b apart from the bus > speed and clock multiplier or is it just not posible.
> I've tried to overclock my Pentium P75 but have had no luck. On the > motherboard I've found the relevent jumpers and I tried to set it to > 1.5x66 and 2x50 but nothing happens, it does not even boot up. The > original settings were 1.5x50. I was just wondering if my ageing 75 > was overclockable. If I can get it to 100Mhz I'll be happy.
> The motherboard is a Triton board from 1995. and the bios is AWARD > from 1995.
> Do I need to change any other jumpers on the m/b apart from the bus > speed and clock multiplier or is it just not posible.
I've successfully overclocked my old p75 to 120, but though better of it, and run it at a 100 Mhz in a server(quake on the LAN) my roommate and I put together form old/spare parts... incuding an old MB(that had a crack, cause i pushed a PCI lan card a little too hard, plus it got dropped six feet off a friends head onto a hard floor, oops) no problems, runs fine under Linux... running a P133 now, K6 233 on the way via FEDEX... jame ?
Your system sounds very similar to mine. Mine will overclock to 90MHz but no further (1.5 x 60). Try that first before going to 100. Mind you my flatmate's p75 works fine at 100.
> I've tried to overclock my Pentium P75 but have had no luck. On the > motherboard I've found the relevent jumpers and I tried to set it to > 1.5x66 and 2x50 but nothing happens, it does not even boot up. The > original settings were 1.5x50. I was just wondering if my ageing 75 > was overclockable. If I can get it to 100Mhz I'll be happy.
>I've tried to overclock my Pentium P75 but have had no luck. On the >motherboard I've found the relevent jumpers and I tried to set it to >1.5x66 and 2x50 but nothing happens, it does not even boot up. The >original settings were 1.5x50. I was just wondering if my ageing 75 >was overclockable. If I can get it to 100Mhz I'll be happy.
>The motherboard is a Triton board from 1995. and the bios is AWARD >from 1995.
>Do I need to change any other jumpers on the m/b apart from the bus >speed and clock multiplier or is it just not posible.
> On my sister's computer I overclocked a P75 to 90Mhz, wouldn't go > higher than that and I had to get a bigger heatsink to make it stable.
> On Sun, 10 Aug 1997 19:33:22 GMT, ja...@mujnu.clara.net (Jamal Akhtar) > wrote:
> >I've tried to overclock my Pentium P75 but have had no luck. On the > >motherboard I've found the relevent jumpers and I tried to set it to > >1.5x66 and 2x50 but nothing happens, it does not even boot up. The > >original settings were 1.5x50. I was just wondering if my ageing 75 > >was overclockable. If I can get it to 100Mhz I'll be happy.
> >The motherboard is a Triton board from 1995. and the bios is AWARD > >from 1995.
> >Do I need to change any other jumpers on the m/b apart from the bus > >speed and clock multiplier or is it just not posible.
> Don't spam on me. I'll be sure to complain to your ISP
I have 2 P75, one is overclocked to P120 2x 60 bus, the other won't overclock at all. The boards , ram, cases, cooling etc. are all the same and the chips were bought together I think from the same batch. I guess some won't overclock at all.
