rasz_pl wrote on 2022-10-01, 23:57:

Frunzl wrote on 2022-10-01, 23:23:

When I removed X4 from my modded chip, I unfortunately ripped off the pad

🙁
When I was modding motherboards for coppermines back in ~2000 I would drill socket plastic a little bigger and sleeve insulation stripped from thin wire over the pin I wanted disconnected.

I know, for a normal board, that would be much preferable... it is a shame, but nowadays, where a cheap Tualeron costs a few bucks and with these hyper-expensive Interposers, it would be much more painful to drill into such an extremely rare devie....

But it is a shame 🙁

Yes, and unfortunately, I do not have post card, sthg I wanted to get for an eternity. But I will check with the scope in the meantime

Please honor the no sales on Vogons rule. I just deleted a sales offer.

There it is, a Tualatin @ 933 MHz from 2002 on a 440FX Socket 8 platform from 1996.

I so want to build a socket 8 tualatin…

Got a pic of the hardware?

Sphere478 wrote on 2022-11-14, 22:08:

I so want to build a socket 8 tualatin…

Oh yes, I understand completely, I have been trying to achieve this for more than a year.
I will be able to post pictures on Friday.

Frunzl wrote on 2022-11-14, 21:57:

There it is, a Tualatin @ 933 MHz from 2002 on a 440FX Socket 8 platform from 1996.

133 MHz FSB on a 440FX? How is that even possible?

H3nrik V! wrote on 2022-11-15, 05:04:

Frunzl wrote on 2022-11-14, 21:57:

There it is, a Tualatin @ 933 MHz from 2002 on a 440FX Socket 8 platform from 1996.

133 MHz FSB on a 440FX? How is that even possible?

A Tualatin Celeron, nominally running at 14*100MHz=1400MHz would run at 14*66.66MHz=933MHz

darry wrote on 2022-11-15, 05:15:

H3nrik V! wrote on 2022-11-15, 05:04:

Frunzl wrote on 2022-11-14, 21:57:

There it is, a Tualatin @ 933 MHz from 2002 on a 440FX Socket 8 platform from 1996.

133 MHz FSB on a 440FX? How is that even possible?

A Tualatin Celeron, nominally running at 14*100MHz=1400MHz would run at 14*66.66MHz=933MHz

Ah, of course. I just never think of Tualeron when Tualatin is mentioned 🤣

Friday came and went, but the photos we are itching for are MIA.

Any chance you'd be able to test this out in a dual CPU socket 8 system? Which socket 8 systems do you have at your disposal? I thought having a dual PIIOD-333 on my dual socket 8 setup was pretty slick, but a Tualeron at 933 MHz blows that away.

I just looked in my bin for a PL-370/T, but I just have the Powerleap PL-NEO/T. I used to use these in a dual Asus board that didn't have Tualatin support. So the PL-370/T would be similar to the PL-NEO/T, except the former has voltage control and AGTL circuitry?

feipoa wrote on 2022-11-15, 07:57:

Friday came and went, but the photos we are itching for are MIA.

Any chance you'd be able to test this out in a dual CPU socket 8 system? Which socket 8 systems do you have at your disposal? I thought having a dual PIIOD-333 on my dual socket 8 setup was pretty slick, but a Tualeron at 933 MHz blows that away.

I just looked in my bin for a PL-370/T, but I just have the Powerleap PL-NEO/T. I used to use these in a dual Asus board that didn't have Tualatin support. So the PL-370/T would be similar to the PL-NEO/T, except the former has voltage control and AGTL circuitry?

I only posted this yesterday, so Friday is still ahead 😀 Unfortunately, I am out of town until then.

I am currently running it on a pretty unimpressive QDI Legend P61440FX Commander.

And I do have a dual Socket 8 Intel board (will look for the model number when possible), on which I still need to test it. This board did work with two Mendocino Celerons @ 533 MHz. However, these are known to support SMP, which is not the case for the later Celerons, including the Tualerons. Actually, among the PIIIs, I believe only the full Tualatin-S models can do multi-CPU. And with these in such a system, the lower multiplier would result in quite low CPU clocks. Still certainly much faster than the PII-OD. For the Coppermines (Celeron or not), it seems that they cannot do SMP either, but I have read conflicting information and some forum post claimed it did work on some models (great reference, I know..). I doubt it, since Intel probably didnt want to cannibalize their first Xeons.

My own experience until now: I think, I already wrote earlier that I had modified the PL-Pro/II to run FC-PGA up to Coppermines. This did not work in dual socket configuration, neither Celeron, nor full Coppermine PIII. With only one CPU installed on the dual board, no problem. I must admit that I didnt pursue it much though. Also, I honestly prefer the older, more down to earth QDI motherboard vs the Intel one (AT vs ATX, no onboard SCSI and LAN etc..) and both are catastrophically bottlenecked by the EDO RAM anyway 😀

Unfortunately, I have neither two PL-370/T, nor two identical Tualatin-S models, but I will try it with my single Tualeron and a 1400S (unfortunately not at the same time) in the dual socket board and report asap 😀

Regarding CPU compatibility, the PL-Pro/II supposedly is not supported by Award Bioses (acc. to the PL website). This is not true, but I absolutely needed to run Biospatcher first, otherwise no post.

For the PL-NEO/T, I cannot say. Again, modifying the socket of the PL-Pro/II to accept FC-PGA (i.e. isolating/connecting the Reset pins) did work up to Coppermine, but the Korean modified "FC-PGA"-Tualatins did not run at all. So I dont know if further mods would be necessary to make the PL-NEO/T PPGA- or PL-Pro/II compatible as well.

More on Friday

Here you go.

And this was the previous "version" (before I got my hands on a PL-370/T), including the mod to make it FC-PGA compatible.
Please keep in mind that I tried to make it as reversible as possible, hence no soldering etc. The glue residues and markings were pretty much completely removable.

The Tualeron and the Tualatin-S work on both boards.
Here are some Speedsys results for the 1400S, P2OD and the original Pentium Pro 200 1M (running at 233 MHz).

Thanks for the speedsys results, would it be too much to ask for the detailed memory breakdown of each configuration it gives you when you press 'M' or whatever?

maxtherabbit wrote on 2022-11-18, 17:03:

Thanks for the speedsys results, would it be too much to ask for the detailed memory breakdown of each configuration it gives you when you press 'M' or whatever?

Sure, happy to be able to contribute something interesting.

Thanks! I like that because it shows a more realistic picture of cache/memory performance without averaging the MMX results with the non-MMX ones

well, looks like Tualatin reaches MMX performance without using MMX registers, maybe more aggressive prefetching?
tualatin in socket 8 is even crazier than 'Epox S2C Slot-1 to Slot-2 Adapter' https://www.anandtech.com/show/318

This is definitely the most aggressive and far reaching upgrade I've seen. Was there any other upgrade that takes your old motherboard further into the future? The only thing that can make it cooler would be working in SMP.

rasz_pl wrote on 2022-11-20, 01:20:

well, looks like Tualatin reaches MMX performance without using MMX registers, maybe more aggressive prefetching?
tualatin in socket 8 is even crazier than 'Epox S2C Slot-1 to Slot-2 Adapter' https://www.anandtech.com/show/318

IIRC, prefetch was one of the improvements on Tualatin over Coppermine