Who has the lowest benchmarks?
 

Just for kicks I benchmarked a very old computer and posted it in the Perpetual Benchmark thread and thought there has to be some people with slow computers doing GIMPS work (and the patience to even bench test it).

So who out there can best this slow-poke? Remember, slower the better!


CPU type: 486 DX4-100
CPU Speed: 100
L2 cache size: ?
L2 cache speed:?
Memory Type / Bus Speed: ?
OS: Windows 95
Notes: Dell Latitude XP laptop, 20MB RAM

Intel 486 processor
CPU speed: 100.00 MHz
L1 cache size: unknown
L2 cache size: unknown
L1 cache line size: unknown
L2 cache line size: unknown
Prime95 version 22.12, RdtscTiming=1
Best time for 256K FFT length: 5644.112 ms.
Best time for 320K FFT length: 7487.132 ms.
Best time for 384K FFT length: 8896.265 ms.
Best time for 448K FFT length: 10872.523 ms.
Best time for 512K FFT length: 11809.254 ms.
Best time for 640K FFT length: 15911.686 ms.
Best time for 768K FFT length: 19052.907 ms.
Best time for 896K FFT length: 23010.530 ms.
Best time for 1024K FFT length: 25308.399 ms.
Best time for 1280K FFT length: 34091.262 ms.
Best time for 1536K FFT length: 56942.322 ms.
Best time for 1792K FFT length: 150014.057 ms.

If only my folks hadn't tossed the 486DX33 (or the PCjr :( )

Re: Who has the lowest benchmarks?
 

[quote="delta_t"]
So who out there can best this slow-poke? Remember, slower the better!
CPU type: 486 DX4-100
CPU Speed: 100
[/quote]

Come on! Did you not at least have the decency to underclock that good 'ol fellow in the winter of his life? *g*

Tau

delta_t,
Took all weekend to run. Looks like my laptop is a lot slower (50-60X) then yours. Wonder why?

IBM ThinkPad
Intel 486 processor
CPU speed: 100.00 MHz
L1 cache size: unknown
L2 cache size: unknown
L1 cache line size: unknown
L2 cache line size: unknown
Prime95 version 23.4, RdtscTiming=1
Best time for 384K FFT length: 511272.479 ms.
Best time for 448K FFT length: 626955.052 ms.
Best time for 512K FFT length: 672837.221 ms.
Best time for 640K FFT length: 909529.123 ms.
Best time for 768K FFT length: 1083979.455 ms.
Best time for 896K FFT length: 1325912.514 ms.
Best time for 1024K FFT length: 1426720.553 ms.
Best time for 1280K FFT length: 1880080.259 ms.
Best time for 1536K FFT length: 2239153.927 ms.
Best time for 1792K FFT length: 2741748.998 ms.
Best time for 2048K FFT length: 3004013.919 ms.

john

Hmmm. I wonder if I should bring one of my 386 boxen out of retirement - I think I have a FPU in one of those....

8-)

We're cleaning out the computer room and just ran across our old 486/33 boart. I'm pretty sure it still works, and we're about to trash the case it originally came in (it cost about $2500 back in 1992). Maybe I should pop it in the case for a quick bench. :mrgreen:

[quote="trif"]We're cleaning out the computer room and just ran across our old 486/33 boart. I'm pretty sure it still works, and we're about to trash the case it originally came in (it cost about $2500 back in 1992). Maybe I should pop it in the case for a quick bench. :mrgreen:[/quote]
Yes. Yes. Yes!

[quote="trif"]... a quick bench.[/quote]
Ahem! Make that a [i]slow[/i] bench, of course! ;) Anybody got a 386 SX 25 MHz?

[quote="Reboot It"]Anybody got a 386 SX 25 MHz?[/quote]
How about a DX-20?

[img]http://www.teamprimerib.com/jpg/dx20.jpg[/img]

Too bad the computer it was in is long gone...

[quote="nomadicus"][quote="trif"]We're cleaning out the computer room and just ran across our old 486/33 boart. I'm pretty sure it still works, and we're about to trash the case it originally came in (it cost about $2500 back in 1992). Maybe I should pop it in the case for a quick bench. :mrgreen:[/quote]
Yes. Yes. Yes![/quote]

I can't find the old 30 pin memory it used. :(

When we first moved the case out of here, I felt like, "Good riddance!" The power supply is original (though the fan had been replaced), and it was starting to flake out, not wanting to start up and randomly quitting, so it had been giving me real headaches for awhile. But I'm starting to get nostalgic about it now. I had to talk my husband into buying it instead of spending the money on an engagement ring. While the computer is worthless now, I sure got a heckuva lot more enjoyment out of it than a rock I'd be paranoid about damaging or losing.

On the upside, the machine that replaced it is about seven times as fast at doing my LMH stuff! :banana:

I've got a 386-DX20, but that MB doesn't have a FPU on it - and it's DIP RAM, I don't think I could get it built up enough to put more than a couple Megs of RAM on it.

I *do* have a 386DX33 / 387DX25 MB with 16 Megs on it, though - when I get back from my trip next week, I'll look into running a REAL SLOW benchmark on it - presuming it's still working, I've not had that board fired up in over 4 years....