sounds like a fun project keep in mind they dont support sse2, sse3, or later instruction set extensions. only i say that so you understand in advance how far you can take a system like that. otherwise if you could run windows 10 and modern sh*t with 8 xeons.

Windows 7 supported P3 until 2018:

https://www.notebookcheck.net/Microsoft-drops … s.310654.0.html

yes but programs that are written to take advantage of multiple CPUs, dont all run on CPUs that dont support sse2 and later instruction sets. especially media applications, games and programs compiled with later versions of visual studio and other compilers. So just becasue you have 8 cpus doesn't mean newer software that might take advantage of 8 cpus will even run.

There's also very serious FSB limitation, which kinda ruins it all.

The question is what SMP benchmarks are there, not can a quad P3 run modern windows?

Got to ask... what mobo? I pressume slot2 Xeons?

smallpt (OpenMP). In fact any program that supports OpenMP would probably scale nicely (given how OpenMP is used as an API). Might need to find real world results to compare against. There are some other SMP benchmarks, but I can't think of any atm, maybe also look at blender test scenes etc. Raytracing is embarrassingly parallel so scales well.

You might find some interesting input here:

http://www.cpushack.com/2019/01/18/part-4-min … d-overclocking/

What CPUs were you considering? Tanners or Cascades?

The Serpent Rider wrote:

There's also very serious FSB limitation, which kinda ruins it all.

Well, there are 933's in 133 MHz FSB. Unfortunately only 256 kiB cache, though ..

I am probably considering 900 mhz Cascades. I know probably only 2 of my eight processors will ever be utilized at max, but it would still be awesome to have 4/8 in a system. Im planning on possibly using a Dell Poweredge motherboard from a 6400 or 8450, but if a better solution comes up i'll look into that too. For this system i'll probably dual boot an old operating system for if I want to play older games on it with an older graphics card, (I already have a 1999 system for the job but it would be cool to see how the Xeons function in older games) and I want to use a modern os as well to utilize the 4/8 processors and utilize modern applications to see how it holds up. I know there will be an SSE limitation but i'm not concerned as most of the stuff I want to run on the newer OS I can just run using a older version.

Old PC Hunter wrote:

I know probably only 2 of my eight processors will ever be utilized at max, but it would still be awesome to have 4/8 in a system.

I can fully understand that feeling 😎

Warlord wrote:

yes but programs that are written to take advantage of multiple CPUs, dont all run on CPUs that dont support sse2 and later instruction sets. especially media applications, games and programs compiled with later versions of visual studio and other compilers. So just becasue you have 8 cpus doesn't mean newer software that might take advantage of 8 cpus will even run.

Yes if you use WIndows..

But there are other Options too.

H3nrik V! wrote:

Well, there are 933's in 133 MHz FSB. Unfortunately only 256 kiB cache, though ..

Worse still they only support 2-way rather than 8-way systems.

I have a 2005 vintage SIV save file from an IBM 8681 with 8 x Intel Pentium III Xeon (Tanner), but that is from before I added a CPU benchmark. If you do get one I would like to know how well SIV runs on it. Using the save files in test mode I get:

red-ray wrote:

H3nrik V! wrote:

Well, there are 933's in 133 MHz FSB. Unfortunately only 256 kiB cache, though ..

Worse still they only support 2-way rather than 8-way systems.

That's a shame .. Is that so for all Cascades processors, or only the 133 FSB parts?

H3nrik V! wrote:

red-ray wrote:

H3nrik V! wrote:

Well, there are 933's in 133 MHz FSB. Unfortunately only 256 kiB cache, though ..

Worse still they only support 2-way rather than 8-way systems.

That's a shame .. Is that so for all Cascades processors, or only the 133 FSB parts?

Just the 133 MHz FSB ones, the 100 MHz FSB are good for 4-way and more in the right system.

I have a https://www.supermicro.com/products/motherboa … P3/HE/S2QR6.cfm, but never got around to getting it working

Thanks guys for all the helpful stuff. Does anyone here know of any other motherboards I could use for 4/8 Xeons besides the cheap dell ones? Such as ones that are any better?

Also, once I do eventually build the system, which i'll probably start piecing together in the next month or two, i'll make sure to hand over multiprocessing benchmarks for those who are curious.

you are making my dual coppermine build feel very inadequate right now bro

🤣

Old PC Hunter wrote:

Also, once I do eventually build the system, which i'll probably start piecing together in the next month or two, i'll make sure to hand over multiprocessing benchmarks for those who are curious.

Looking forward to seing that. I am a total sucker for everything multi-socketed. 😎

Me too. Looking at classic multiprocessing is very enjoyable to me.