brassicGamer wrote on 2016-05-26, 21:38:

http://www.anandtech.com/show/574

I loved reading this arcticle today, cause I just repaired an old beautiful Asus p2b rev 1.02 and I want to run with a Coppermine processor overclocking it with 133mhz fsb.
I just understood that I have no problem with the PCI cause 440bx has the dividers, the memory cause I choose pc133 memory, and the video card with 89mhz agp cause I disable sideband addressing.
So I think that my Pentium 700 simply can't handle 933mhz with 1,85v. (sometimes I have some strange errors) so I decided to insulate another one pin to make it asks 1,95v. And see if it's stable then.
Active cooling on slot1 obviously by putting a nice 60mm fan over the big heatsink of that processor.

I have overclocked 440BX-boards alot and my experiences:

-forget Radeon cards, don't like overclocked AGP at all
-Geforce 3 and newer likes up to 100MHz (so 150MHz FSB)
-problems start somewhere @153FSB

dj_pirtu wrote on 2023-03-07, 09:03:

I have overclocked 440BX-boards alot and my experiences: […]
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I have overclocked 440BX-boards alot and my experiences:

-forget Radeon cards, don't like overclocked AGP at all
-Geforce 3 and newer likes up to 100MHz (so 150MHz FSB)
-problems start somewhere @153FSB

Nice.

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

biessea wrote on 2023-03-11, 13:03:

Nice.

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

Which stepping? cB0 or cC0? cC0 is the better one. cA2 the oldest

My 1GhZ Slot 1 PIII SL4BS has the cC0 stepping and run stable with 1120MHz (1,75V), with the stock voltage (1,7V) only ~1095MHz Prime stable. There are also cD0 steppings, but only for Socket 370 Coppermines, also named Coppermine-T, the best steppings, ~1300Mhz is no problem for coppermines with this stepping. cC0 is the best stepping for the real Slot 1 PIII Coppermines. SL4C3 is the latest cC0 and only stepping for the 700 MHz PIII Slot 1.

You should also change the old thermal paste or pad on the CPU Die, this could also help.

biessea wrote on 2023-03-11, 13:03:

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

This could even be caused by the board. My ECS board isn't stable at 112Mhz FSB, it exhibits hard drive controller instability at this frequency. Usually only boards which support up to 150Mhz FSB will be stable at 133. It doesn't really matter as PIII 900E is plenty fast. I would highly recommend getting one. They aren't too rare.

I also have a few KT133 boards and Athlon 1200 CPUs but I keep using the PIII as it's good enough.

NostalgicAslinger wrote on 2023-03-11, 13:36:

Which stepping? cB0 or cC0? cC0 is the better one. cA2 the oldest […]
Show full quote

biessea wrote on 2023-03-11, 13:03:

Nice.

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

Which stepping? cB0 or cC0? cC0 is the better one. cA2 the oldest

My 1GhZ Slot 1 PIII SL4BS has the cC0 stepping and run stable with 1120MHz (1,75V), with the stock voltage (1,7V) only ~1095MHz Prime stable. There are also cD0 steppings, but only for Socket 370 Coppermines, also named Coppermine-T, the best steppings, ~1300Mhz is no problem for coppermines with this stepping. cC0 is the best stepping for the real Slot 1 PIII Coppermines. SL4C3 is the latest cC0 and only stepping for the 700 MHz PIII Slot 1.

You should also change the old thermal paste or pad on the CPU Die, this could also help.

Sl3xm is my cpu number, so the stepping number is Cb0.

I am really afraid to change thermal paste cause I tried before in a p2 450 Deschutes and I didn't manage to open the heatsink without destroying the board where the cpu was.

AlexZ wrote on 2023-03-11, 17:40:

biessea wrote on 2023-03-11, 13:03:

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

This could even be caused by the board. My ECS board isn't stable at 112Mhz FSB, it exhibits hard drive controller instability at this frequency. Usually only boards which support up to 150Mhz FSB will be stable at 133. It doesn't really matter as PIII 900E is plenty fast. I would highly recommend getting one. They aren't too rare.

I also have a few KT133 boards and Athlon 1200 CPUs but I keep using the PIII as it's good enough.

Oh God if only I could find a 900e slot1 processor, but please tell me where?
My Asus p2b at 133mhz has the 1/4 divisor so no problem with PCI slot or hard disks.
The mai problem is the AGP slot but I use video card that work with 89mhz.

I think unfortunately the problem is the cpu. I don't want to use it only at 780mhz with 112mhz fsb 🙁

biessea wrote on 2023-03-13, 15:08:

Oh God if only I could find a 900e slot1 processor, but please tell me where? My Asus p2b at 133mhz has the 1/4 divisor so no p […]
Show full quote

AlexZ wrote on 2023-03-11, 17:40:

biessea wrote on 2023-03-11, 13:03:

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

This could even be caused by the board. My ECS board isn't stable at 112Mhz FSB, it exhibits hard drive controller instability at this frequency. Usually only boards which support up to 150Mhz FSB will be stable at 133. It doesn't really matter as PIII 900E is plenty fast. I would highly recommend getting one. They aren't too rare.

I also have a few KT133 boards and Athlon 1200 CPUs but I keep using the PIII as it's good enough.

Oh God if only I could find a 900e slot1 processor, but please tell me where?
My Asus p2b at 133mhz has the 1/4 divisor so no problem with PCI slot or hard disks.
The mai problem is the AGP slot but I use video card that work with 89mhz.

I think unfortunately the problem is the cpu. I don't want to use it only at 780mhz with 112mhz fsb 🙁

The 900MHz in Slot 1 format doesn't exist; Socket 370 only.

850/100, 866/133, or 933/133MHz are the closest options to 900MHz. 866 should still be plentiful. I think I have 15 of them, which I bought in a cheap lot less than a year ago.

AlexZ wrote on 2023-03-11, 17:40:

biessea wrote on 2023-03-11, 13:03:

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

This could even be caused by the board. My ECS board isn't stable at 112Mhz FSB, it exhibits hard drive controller instability at this frequency. Usually only boards which support up to 150Mhz FSB will be stable at 133. It doesn't really matter as PIII 900E is plenty fast. I would highly recommend getting one. They aren't too rare.

I also have a few KT133 boards and Athlon 1200 CPUs but I keep using the PIII as it's good enough.

Sorry but the Pentium 3 900e Slot1 simply doesn't exist! I have to find a 850 one or the 1ghz,but it's pratically impossible to find!

Meatball wrote on 2023-03-13, 16:24:

biessea wrote on 2023-03-13, 15:08:

Oh God if only I could find a 900e slot1 processor, but please tell me where? My Asus p2b at 133mhz has the 1/4 divisor so no p […]
Show full quote

AlexZ wrote on 2023-03-11, 17:40:

This could even be caused by the board. My ECS board isn't stable at 112Mhz FSB, it exhibits hard drive controller instability at this frequency. Usually only boards which support up to 150Mhz FSB will be stable at 133. It doesn't really matter as PIII 900E is plenty fast. I would highly recommend getting one. They aren't too rare.

I also have a few KT133 boards and Athlon 1200 CPUs but I keep using the PIII as it's good enough.

Oh God if only I could find a 900e slot1 processor, but please tell me where?
My Asus p2b at 133mhz has the 1/4 divisor so no problem with PCI slot or hard disks.
The mai problem is the AGP slot but I use video card that work with 89mhz.

I think unfortunately the problem is the cpu. I don't want to use it only at 780mhz with 112mhz fsb 🙁

The 900MHz in Slot 1 format doesn't exist; Socket 370 only.

850/100, 866/133, or 933/133MHz are the closest options to 900MHz. 866 should still be plentiful. I think I have 15 of them, which I bought in a cheap lot less than a year ago.

Sorry but I prefer to find 100mhz fsb processors...

I had a 800e 133fsb cpu, just sold on ebay.

biessea wrote on 2023-03-13, 16:43:

Sorry but the Pentium 3 900e Slot1 simply doesn't exist! I have to find a 850 one or the 1ghz,but it's pratically impossible to find!

Buy a FCPGA slotket.

AlexZ wrote on 2023-03-14, 21:22:

biessea wrote on 2023-03-13, 16:43:

Sorry but the Pentium 3 900e Slot1 simply doesn't exist! I have to find a 850 one or the 1ghz,but it's pratically impossible to find!

Buy a FCPGA slotket.

No sorry, I don't like slotket solutions.

Anyway I solved giving more voltage to the Coppermine, now it's stable at 2,05v. (I hope it will work without dying!) at 933mhz,I am happy with that!

2.05V is too much for Coppermine.

2,05V is the stock voltage of the 250 nm PIII Katmai 600 MHz und you give this voltage to a 180 nm CPU and a very old Thermal paste or pad...I would search for another Coppermine with better stepping. Your CPU will degreade very fast in the future with this voltage.

Since the post came back in front page, I'm adding my modest contribution.

GeForce 256 DDR and SDR works well with AGP at 89Mhz (Asus CUBX-E. PIII 700 @933)

acl wrote on 2023-03-15, 20:45:

Since the post came back in front page, I'm adding my modest contribution.

GeForce 256 DDR and SDR works well with AGP at 89Mhz (Asus CUBX-E. PIII 700 @933)

Thanks a lot mate!

biessea wrote on 2023-03-13, 16:43:

AlexZ wrote on 2023-03-11, 17:40:

biessea wrote on 2023-03-11, 13:03:

Even with 1,95v. My p3-700e isn't stable at 933 unfortunately. Quite sad. Sometimes games crash, I tried go for a run of Prime95 and it halt about after a minute... I think I will have to return to 112mhz fsb 🙁

This could even be caused by the board. My ECS board isn't stable at 112Mhz FSB, it exhibits hard drive controller instability at this frequency. Usually only boards which support up to 150Mhz FSB will be stable at 133. It doesn't really matter as PIII 900E is plenty fast. I would highly recommend getting one. They aren't too rare.

I also have a few KT133 boards and Athlon 1200 CPUs but I keep using the PIII as it's good enough.

Sorry but the Pentium 3 900e Slot1 simply doesn't exist! I have to find a 850 one or the 1ghz,but it's pratically impossible to find!

I have 2x SL4BX + dual Slot1 MB ... hmmm... I was under impression they where 1ghz.. oh well.

In my experience stability with 89 MHz AGP on i440BX is just as much about the motherboard as the video card.

My best experience is with the Asus P2B 1.02 (first retail rev), it can run most video cards at 89 MHz AGP speed without issues regardless of CPU and memory speeds. It's hard for me to know if it's just my board that happens to be better than the avarage or if all P2B 1.02 are good in this regard.

Many other motherboards are fine at 89 MHz AGP with slower CPUs but tend to get hard to get 100% stable at that speed in combination with heavy overclocking and/or CPUs running at 1000+ MHz.

If I remember right Star Wars Rogue Squadron is one game that tends to cause issues when everything else seem to work. I think it's likely that it's timing issues that cause the problems.

Just getting it stable enough for 3dmark is another matter! 😁

3dfx Voodoo 4 4500 seems also happy with 89MHz AGP Bus speed, however I am unsure if ok to overclock further or I should by rather a 100MHz bus speed processor.

Adding my 2 cents... Since this thread sense to be defined from time to time.

I currently have my Asus P3B-f running stable at 140MHz fsb (p3-933@980), which makes the AGP run at 93MHz.
Tested ook wat this does:
3x Asus Ti4200
Several Gf4 MX420/440/480 based cards
TNT2 pro
Gf2 MX
No single ATI (Rage, 9xxx) managed this speed. No 3DFX tested.

Had the fsb at 150 for a short while (p3-933@1050) making the agp run at 100MHz. I found only one MX480 that could handle this speed stable.
(Many thanks to the 1/4 pci divider keeping everything else stable)

Recently been playing with a P4C800-E and with AGP at 83 my ATI 9250, 9600 Gf4 Ti4200 and FX5700 were stable enough to complete 3Dmark 01 + 03 in a row.