Mamba wrote on 2024-09-20, 12:31:

ElectroSoldier wrote on 2024-09-20, 11:44:

Yes I know, but not all Tualatin chips are P3-S chips ;-) […]
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Mamba wrote on 2024-09-20, 05:10:

As I said, all S chips are SMP capable.
We should wait for someone who read and help us.

Majestyk or Chkcpu, if they pass by

Yes I know, but not all Tualatin chips are P3-S chips 😉

I wouldnt bother with it. I would say its more likely to do with the power than the BIOS settings especially as one works.

Run a pair of coppermine CPUs in it and get a decent board for the Tualatins. There are still some out there.

Never said this:
“Yes I know, but not all Tualatin chips are P3-S chips“

Theres a difference between P3-s an P-3s.
One is a Pentium 3-S and the other is plural Pentium 3.

Semantics aside, what do you intend to do with it? Why would you want to put those CPUs on that board?

Mamba wrote on 2024-09-19, 11:05:

I have exactly the same problem.
No modded bios out there?

Some combination of board revision (maybe not yours?) and modded cpu / socket clearly works, and with the stock BIOS - Re: 694D Pro2 (MS-6321) dual P3 motherboard

ElectroSoldier wrote on 2024-09-20, 13:05:

Theres a difference between P3-s an P-3s. One is a Pentium 3-S and the other is plural Pentium 3. […]
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Mamba wrote on 2024-09-20, 12:31:

ElectroSoldier wrote on 2024-09-20, 11:44:

Yes I know, but not all Tualatin chips are P3-S chips 😉

I wouldnt bother with it. I would say its more likely to do with the power than the BIOS settings especially as one works.

Run a pair of coppermine CPUs in it and get a decent board for the Tualatins. There are still some out there.

Never said this:
“Yes I know, but not all Tualatin chips are P3-S chips“

Theres a difference between P3-s an P-3s.
One is a Pentium 3-S and the other is plural Pentium 3.

Semantics aside, what do you intend to do with it? Why would you want to put those CPUs on that board?

Sorry but I think we already moved on.

PC Hoarder Patrol wrote on 2024-09-20, 13:13:

Mamba wrote on 2024-09-19, 11:05:

I have exactly the same problem.
No modded bios out there?

Some combination of board revision (maybe not yours?) and modded cpu / socket clearly works, and with the stock BIOS - Re: 694D Pro2 (MS-6321) dual P3 motherboard

Yes,
The problem is that we have the first revision, so the 694D pro 1.x
Not the 694D pro2 (2.x)

Of course with modded Tualatin-S (or with adapters, my case).
That is why I was wondering if some bios editing could help.

I can try to put pro2 bios, with my programmer.
Just I do not want to fry the motherboard.
Any chance it could happen?

Ok I did it.
Crossflashed with the pro2 bios.
The board starts, even if I get a strange warning
“Flash memory is protected” (?)

Now for XP loads, but afterwards desktop appears I get IRQ_Not_Less_or_equal error.

I feel I did a step forward anyway.

PC Hoarder Patrol wrote on 2024-09-20, 13:13:

Some combination of board revision (maybe not yours?) and modded cpu / socket clearly works, and with the stock BIOS - Re: 694D Pro2 (MS-6321) dual P3 motherboard

Thanks for linking to my post, but yes, I have the revision 2.x which works fine with two modded Tualatins.

I can also dual-boot 98SE and XP just fine, without getting any bluescreens.

Ok,
I think that the pro2 bios handles two Tualatin better, but the board is so unstable that I cannot install any OS.

I think I will revert to the original bios, waiting for someone who can compare the two bioses.
And maybe copy the pro2 part on the pro, when it comes to cpu handling (if it is even possible).

Jan are you around?

ElectroSoldier wrote on 2024-09-20, 11:44:

Yes I know, but not all Tualatin chips are P3-S chips ;-) […]
Show full quote

Mamba wrote on 2024-09-20, 05:10:

As I said, all S chips are SMP capable.
We should wait for someone who read and help us.

Majestyk or Chkcpu, if they pass by

Yes I know, but not all Tualatin chips are P3-S chips 😉

I wouldnt bother with it. I would say its more likely to do with the power than the BIOS settings especially as one works.

Run a pair of coppermine CPUs in it and get a decent board for the Tualatins. There are still some out there.

Running a pair of 866, 933, and even 1000's all work all CuMine (the 933 did till a busted a pin on one of the 933's PREQ)

Mamba wrote on 2024-09-20, 17:14:

Ok, I think that the pro2 bios handles two Tualatin better, but the board is so unstable that I cannot install any OS. […]
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Ok,
I think that the pro2 bios handles two Tualatin better, but the board is so unstable that I cannot install any OS.

I think I will revert to the original bios, waiting for someone who can compare the two bioses.
And maybe copy the pro2 part on the pro, when it comes to cpu handling (if it is even possible).

Jan are you around?

Do you only get these problems when you use the Tualatin chips?

ElectroSoldier wrote on 2024-09-21, 14:11:

Mamba wrote on 2024-09-20, 17:14:

Ok, I think that the pro2 bios handles two Tualatin better, but the board is so unstable that I cannot install any OS. […]
Show full quote

Ok,
I think that the pro2 bios handles two Tualatin better, but the board is so unstable that I cannot install any OS.

I think I will revert to the original bios, waiting for someone who can compare the two bioses.
And maybe copy the pro2 part on the pro, when it comes to cpu handling (if it is even possible).

Jan are you around?

Do you only get these problems when you use the Tualatin chips?

Yes,
It is the focus of the topic.
To run two Tualatin-S (with adapters or modded) on the 694D pro 1.x

I have a 100% unmodified Aopen DX34-U with dual SL5XL 1400mhz PIII-S chips running in SMP. so socket adapters or anything, original bios (I don't have an update utility but i see a new bios is available). XP Pro shows 2 processors running, benchmarks are comparable for other SMP systems. It feels reasonably fast. this board came with dual III-S 1266mhz CPUs originally.

i actually found this thread by accident *after* i bought cheap 1400mhz CPUs from ebay, the S-code listed in the ad. i wonder if the seller thought the SL5XL couldn't do SMP and listed them cheap. they came out of a Compaq server is all I know.

leaving this here for future people: if you find cheap 1400mhz SL5XL, snatch them up and put them in a sweet SMP system!

observer wrote on 2025-07-20, 17:19:

I have a 100% unmodified Aopen DX34-U with dual SL5XL 1400mhz PIII-S chips running in SMP. so socket adapters or anything, original bios (I don't have an update utility but i see a new bios is available). XP Pro shows 2 processors running, benchmarks are comparable for other SMP systems. It feels reasonably fast. this board came with dual III-S 1266mhz CPUs originally.

i actually found this thread by accident *after* i bought cheap 1400mhz CPUs from ebay, the S-code listed in the ad. i wonder if the seller thought the SL5XL couldn't do SMP and listed them cheap. they came out of a Compaq server is all I know.

leaving this here for future people: if you find cheap 1400mhz SL5XL, snatch them up and put them in a sweet SMP system!

https://theretroweb.com/motherboards/s/aopen-dx34-u

the DX34-U does support tualatin (chiset Apollo Pro 133T)
so there are no surprise that your board work with dual tualatin.

from my experience, any tualatin cpu with 512kb cache L2 will work in SMP configuration. You need to be wary against the 256k cachle L2 variant since they are not support SMP

Although there are a few listed elsewhere which seemingly never passed Intel validation for dual processor configuration (possibly limited / unreleased parts)...

SL5PS - 1BGHz/133

SL6JM - 1.13GHz/133

SL6JN - 1.26GHz/133

SL6JP - 1.4GHz/133

...and which fail to make the validated list for their top end SDS2 server board - https://theretroweb.com/motherboards/s/intel-sds2

PcBytes wrote on 2024-09-19, 14:03:

Dual CPU VIA 694XDPs are generally unstable with 2x Tualatins. It's not isolated to MSI either. ABIT's VP6 also has the same issue, and the report I know of in the VP6's case mentioned both CPUs being SMP capable Tualatins.

Was about to say this. However its not the chipset that's the problem and there is a mod that fixes it on some boards. The mod involves swapping out resisters around the clock speed gen chip. I ran them for the longest time, granted the mod brakes agp 4x support. A few 694 boards will run 1.4ghz at 100fsb fine too but who wants to do that. The guy from Korea that makes those PCB that solder to the bottom of a 1.4ghz Piii knows more about the mod then I do.