NexGen Nx586 PF100-E/E vs. NexGen Nx586 P100-E/E

[misace]

Is there any difference? Is "P100-E/E" without FPU? Does anyone know?

Nx586 PF100-E/E Nx586-E A-2DCPC-202, 001
Nx586 P100-E/E Nx586-E A-2DCPC-202, 001

[crusty_dog]

Yes the P100 is without a FPU, while the PF100 contains an inbuilt FPU

Nexgen made a FPU (587) to run with the non-FPU processors, but I have only seen development boards made to run both

[misace]

Thanks, but I´d I wonder if particulalry this one with brown HS could be also without FPU, nothing about this is on the net.

[crusty_dog]

Seeing the lot/serial number/package is very similar I suspect the P100-E/E either has a disabled FPU or the FPU failed testing

This is the standard package P100

[misace]

You are probably right, it make sense. I didn´t know that exists Nexgen with brown HS without FPU. I found only one picture on the net.

[Marcin]

http://abc-cpu.com/index.php/chip-collection/nexgen/nx586/-1-2698
They are same "common" as version with FPU.

[misace]

I tested P110 Nexgen Brown HS and actually it has a FPU. I didn´t expect that. So in these days you could buy Nexgen P110 with silver HS without a FPU and also Nexgen P110 brown HS with FPU, it´s a mess

[misace]

BTW, the testing board came with Nexgen (big sliver HS) without speed marking and it was switch as P90. I assume no one altered switches on board, so it could be the original speed of speedless Nexgen on picture bellow. I was about to think, the later models has more likely a bit higher speeds...

[crusty_dog]

Thanks for the info

Question, even with FPU does it benchmark like a 3 legged dog?

[frag_]

Nice!
Can you run SuperPi 1M on this P110?
Would be great to see the result on such rare chip!

[misace]

SuperPi 1.1e:
Nexgen Nx586 Brown HS with FPU @P100 @93MHz
(W95,16M RAM,Defaults,Nexgen PCI mobo L2 256kB)............................... 0h 30m 37s
AMD K6-2+ @200MHz (XP,144M RAM, 0kB L3,defaults, Toshiba 1620CDS). 0h 12m 14s
Nexgen Nx586 Silver HS No FPU @P100 @93MHz currently running ........ ~15h estimated from 1st loop

Super PI 1.9 WP
AMD K6-2+ @200MHz (XP,144M RAM, 0kB L3,defaults, Toshiba 1620CDS). 0h 11m 49s
AMD K6-2+ @400MHz (XP,144M RAM, 0kB L3,defaults, Toshiba 1620CDS). 0h 07m 37s

I tried to run both SuperPi 1.1e & Super PI 1.9 WP(latest) on modern HW and results are comparable. 14s & 15s on Hasswel Pentium 2,6 and 15s & 16s on Core i5 laptop.

I will use this post as my notepad.

[frag_]

Interesting, thanks!
>(W95,16M RAM,Defaults,Nexgen PCI mobo L2 256kB)............................... 0h 30m 14s
Screenshot has a bit slower time, different settings?

Significantly faster than i486DX4-100 (~50 min at default speed).
Slower than Pentium (under 20 min at 100 MHz) and K5 (about 25 min).
Last two has twice faster bus though.

[misace]

[misace]

*results for K5, Pentium and 6x86 taken from feipoa´s Ultimate 686 Benchmark.

[frag_]