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Intel PD440FX with PII 350?

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Reply 20 of 30, by karakarga

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Well, nevertheless those mainboards are too far away for todays needs. I have seen data USB sticks are not officially supported by Windows 95B, 98, 98SE, 2000. Official support starts from Windows ME. Without a data USB it is really hard to use them by only floppy, forget about internet too. Some old time CD's that computer magazines (many many years ago) previously given at that time are a good source. Walking with those old stuff is just like using a computer at jail something. AGP cards like nVidia 6800 series can play HD video if the processor is strong like 478 pin 533fsb 3066 MHz "Hyper Threading" based. A good AGP graphics card also provides DVI output for a digital only monitor too. Those 440FX stuff can play mp3 songs and that's the roof they normally can do.

Reply 21 of 30, by havli

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For most people, the purpose of retro PC is to play old games... and Pentium II on i440FX board will run many games perfectly fine.

HD video playback, Internet browsing and such are tasks for modern PC.

HW museum.cz - my collection of PC hardware

Reply 22 of 30, by ux-3

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dionb wrote on 2024-06-29, 10:40:

You are talking about the multiplier. Unless you have an engineering sample, it doesn't matter as the CPUs have locked multipliers and ignore what the board tells them.

I don't think this is correct. All the Klamaths I ever owned had a selectable multi. It might have been capped though.
I still own 3 Deschutes, two of which still have a capped yet selectable multi. They do listen to what the board tells them, provided it doesn't exceed their official multiplier.
These unlocked Deschutes are rare, only a few weeks in production line still had them.

karakarga wrote on 2024-06-29, 15:59:

I have seen data USB sticks are not officially supported by Windows 95B, 98, 98SE, 2000. Official support starts from Windows ME. Without a data USB it is really hard to use them by only floppy, forget about internet too.

NUSB does seem to work fine with win98se.

Retro PC warning: The things you own end up owning you.

Reply 23 of 30, by Grem Five

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Standard Def Steve wrote on 2019-03-09, 04:00:

My Deskpro 4000 has a 440FX slot 1 board. It works fine with 233-300MHz Klamath PIIs, but it just won't recognize the L2 cache on Deschutes (333+ PII), Mendocino (Celeron), or Katmai (PIII). I'm not sure if that's a 440FX thing or a Compaq thing.

My Micronics 440fx works fine with 233-333 Pentium 2s (both Klamath & Deschutes) but not with Celerons unless I turn off external cache in bios, one exception is the cacheless 300 celeron I have.

I'm guessing they dont like the on chip cache, when external cache is on in bios it identifies them as Pentium Pros and then does not boot. With external cache off it identifies them as Pentium 2s and then boots.

Reply 24 of 30, by dionb

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ux-3 wrote on 2024-06-29, 18:17:
I don't think this is correct. All the Klamaths I ever owned had a selectable multi. It might have been capped though. I still o […]
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dionb wrote on 2024-06-29, 10:40:

You are talking about the multiplier. Unless you have an engineering sample, it doesn't matter as the CPUs have locked multipliers and ignore what the board tells them.

I don't think this is correct. All the Klamaths I ever owned had a selectable multi. It might have been capped though.
I still own 3 Deschutes, two of which still have a capped yet selectable multi. They do listen to what the board tells them, provided it doesn't exceed their official multiplier.
These unlocked Deschutes are rare, only a few weeks in production line still had them.

I should have been more specific: CPUs with multiplier over 5.5 were locked. Up to some P2-333 (5x 66MHz) some were unlocked.

Reply 25 of 30, by ux-3

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dionb wrote on 2024-06-29, 23:02:

I should have been more specific: CPUs with multiplier over 5.5 were locked. Up to some P2-333 (5x 66MHz) some were unlocked.

My Deschutes(2.0V) P2-333@66 does have a max. multiplier of 5. My P2-400@100 has max. 4. My late P2-450@100 is fully locked at 4.5.
So at least some P2-400 can be found (rarely!) to be adjustable, but only with a max of 4x.

To return to the context of the thread: The highest 66fsb P2 was 333. So his max. multi of 5 will suffice, provided the board runs 2,0V Deschutes in the first place.

Retro PC warning: The things you own end up owning you.

Reply 26 of 30, by rmay635703

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ux-3 wrote on 2024-06-30, 07:40:
My Deschutes(2.0V) P2-333@66 does have a max. multiplier of 5. My P2-400@100 has max. 4. My late P2-450@100 is fully locked at 4 […]
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dionb wrote on 2024-06-29, 23:02:

I should have been more specific: CPUs with multiplier over 5.5 were locked. Up to some P2-333 (5x 66MHz) some were unlocked.

My Deschutes(2.0V) P2-333@66 does have a max. multiplier of 5. My P2-400@100 has max. 4. My late P2-450@100 is fully locked at 4.5.
So at least some P2-400 can be found (rarely!) to be adjustable, but only with a max of 4x.

To return to the context of the thread: The highest 66fsb P2 was 333. So his max. multi of 5 will suffice, provided the board runs 2,0V Deschutes in the first place.

One of my roommates had an old FSB66 PII Motherboard and had it overclocked using an 83mhz FSB.

From what I remember Intels PII chipset were extremely mediocre at overclocking compared to socket 7 chipsets.

If memory serves the 333 was a good overclocker, so maybe a possibility.

I never could understand why Intel purposefully gimped their slot 1 to be almost non-upgradable due to bad bios support

Looks like J1C9-C jumper block controls FSB on this board but everything other than 66mhz appears to be undocumented.

Also worth noting it has a full jumper block so if you do find an unlocked P2 (I’ve noted a few in unexpected speed grades) that may be another option.

Sadly it looks like this board doesn’t post with later Celeron chips which is unfortunate

Last edited by rmay635703 on 2024-07-02, 21:43. Edited 2 times in total.

Reply 27 of 30, by ux-3

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rmay635703 wrote on 2024-07-02, 16:32:

From what I remember Intels PII chipset were extremely mediocre at overclocking compared to socket 7 chipsets.

If memory serves the 333 was a good overclocker, so maybe a possibility.

I never could understand why Intel purposefully gimped their slot 1 to be almost non-upgradable due to bad bios support

Not so sure here. The 440BX was a P2 chipset, and it OCs quite OK. I can run mine at FSB 133 with no issues.
If you were refering to CPUs, the Klamath was not a great OC CPU. Deschutes was a different thing. They go up quite well.
I run P3 1000 MHz on my Slot 1. That is quite an upgrade from 1st gen P2.

Retro PC warning: The things you own end up owning you.

Reply 28 of 30, by NostalgicAslinger

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ux-3 wrote on 2024-06-30, 07:40:

My Deschutes(2.0V) P2-333@66 does have a max. multiplier of 5. My P2-400@100 has max. 4.

I had a PII 400 SL2S7/Malay stepping with a free multiplier. 450Mhz (4.5x) was fully stable, also boots with a 5x multiplier (Bios says 500 MHz), but not stable (also tested with 2.2V), because this is a earlier Deschutes stepping. This PII 400 was in a Vobis Higscreen PC from August 1998, and the PII 400 was the fastest Intel CPU at this time.

Reply 29 of 30, by rmay635703

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ux-3 wrote on 2024-07-02, 17:35:
Not so sure here. The 440BX was a P2 chipset, and it OCs quite OK. I can run mine at FSB 133 with no issues. If you were referin […]
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rmay635703 wrote on 2024-07-02, 16:32:

From what I remember Intels PII chipset were extremely mediocre at overclocking compared to socket 7 chipsets.

If memory serves the 333 was a good overclocker, so maybe a possibility.

I never could understand why Intel purposefully gimped their slot 1 to be almost non-upgradable due to bad bios support

Not so sure here. The 440BX was a P2 chipset, and it OCs quite OK. I can run mine at FSB 133 with no issues.
If you were refering to CPUs, the Klamath was not a great OC CPU. Deschutes was a different thing. They go up quite well.
I run P3 1000 MHz on my Slot 1. That is quite an upgrade from 1st gen P2.

I’m talking Intels 66mhz FSB motherboards, the BX was not strictly a 66mhz FSB.

Many of Intels 66mhz motherboards were unstable at 75mhz FSB and it was common that the bios locked out later 66mhz celeron chips even if you had a high end slotket.

Reply 30 of 30, by havli

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These boards are not very common, so not much of an issue. 66MHz slot 1 means i440FX and LX. Both chipsets are very old and at the time 100 MHz FSB simply didn't exist - not on slot 1 platform and neither on socket 7.

Late CPUs compatibility depends on BIOS mostly, not the chipset itself. For example I had no problems running Celeron 533 (Mendocino) on Asus P2L97-S.

HW museum.cz - my collection of PC hardware