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Cyrix 6X86 and Quake

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Luc Gaudreault

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Aug 6, 1996, 3:00:00 AM8/6/96
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Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
that it was on the Cyrix. Is that possible?

I know Quake is supposed to be optimized for Intel Pentium but it still
seems a bit of a stretch that the performance change could be this great.

Can anyone comment on this?

Luc Gaudreault


Luc Gaudreault

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Aug 6, 1996, 3:00:00 AM8/6/96
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Never mind, i did a bit of research and found this page

http://www.cam.org/~agena/quake.html

It seems that a P166+ has the same FPU power as a Pentium 90, so that would
put the P150+ in the league of the Pentium 75.

So my friend was right, too bad i was under the impression that difference
was much smaller.


My previous post...

sirus

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Aug 7, 1996, 3:00:00 AM8/7/96
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Easy - Quake relies heavily upon the fpu. Intel's fpu is faster than
cyrix. point blank.

Luc Gaudreault <lu...@microtempus.com> wrote in article
<01bb83b4$c2826ce0$063e...@LUCG.microtempus.com>...


> Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
> Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
> Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
> that it was on the Cyrix. Is that possible?
>
> I know Quake is supposed to be optimized for Intel Pentium but it still
> seems a bit of a stretch that the performance change could be this great.
>

Super Dave

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Aug 7, 1996, 3:00:00 AM8/7/96
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On 6 Aug 1996 16:29:43 GMT, "Luc Gaudreault" <lu...@microtempus.com>
wrote:

>Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
>Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
>Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
>that it was on the Cyrix. Is that possible?
>
>I know Quake is supposed to be optimized for Intel Pentium but it still
>seems a bit of a stretch that the performance change could be this great.
>
>Can anyone comment on this?

Yeah, the Cyrix FPU is way slower than the P's. It's funny, cause my
friend told me he got a P166, but when I went over to his house, he
ran quake for me, and it was crawling, even at vid_mode 0!
He's got 32megs and a stealth-3D, and that didn't help.

The Lord Leto II

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Aug 7, 1996, 3:00:00 AM8/7/96
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In article <4u8r3a$o...@hyperimage.com> mac...@hyperimage.com (Super Dave) writes:
>On 6 Aug 1996 16:29:43 GMT, "Luc Gaudreault" <lu...@microtempus.com>
>wrote:
>
>>Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
>>Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
>>Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
>>that it was on the Cyrix. Is that possible?
>>
>>I know Quake is supposed to be optimized for Intel Pentium but it still
>>seems a bit of a stretch that the performance change could be this great.
>>
>>Can anyone comment on this?
>
> Yeah, the Cyrix FPU is way slower than the P's. It's funny, cause my
>friend told me he got a P166, but when I went over to his house, he

I assume you mean a Cyrix P166+. You should be more clear.

>ran quake for me, and it was crawling, even at vid_mode 0!
>He's got 32megs and a stealth-3D, and that didn't help.

The Stealth-3D didn't help much at all. Quake doesn't support
it, and it's not the fastest video card.

************ The Lord Leto II God Emperor of Arrakis *************
* You did one thing wrong * F--A--C--E * You woke up *
* It looked better before * F--G--Bb-D * More -- more! *
* When the headache's gone * E--G#-B--D# * The sun's not *
* Forgot to turn the alarm * Faith No * On -- on! *
* Don't look at me * More * I'm ugly in the morning *

Adam Williamson

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Aug 7, 1996, 3:00:00 AM8/7/96
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In article <07AUG96.04...@ACADEMIC.NEMOSTATE.EDU>, The Lord Leto
II <T9...@ACADEMIC.NEMOSTATE.EDU> writes

>>friend told me he got a P166, but when I went over to his house, he
>
>I assume you mean a Cyrix P166+. You should be more clear.
>
No, that's the _point_. His friend wasn't clear. His friend obviously
phoned up and said "hey, i've got a P166, come and take a look!" so he
ran round only to discover it was actually a Cyrix 6x86.
--
Adam Williamson
Memento Mori 2 Level 6
ftp://ftp.cdrom.com/pub/idgames/themes/mm/mm2.zip

Brian A. English

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Aug 7, 1996, 3:00:00 AM8/7/96
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On 6 Aug 1996, Luc Gaudreault wrote:

> Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
> Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
> Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
> that it was on the Cyrix. Is that possible?
>
> I know Quake is supposed to be optimized for Intel Pentium but it still
> seems a bit of a stretch that the performance change could be this great.
>
> Can anyone comment on this?
>

Oh no, now look what you've done! :) Oh, well, guess I'll add my $.02...

My Pentium 75 with 16 megs EDO, and onboard Cirrus Logic 5434 gets better
framerates on the Quake benchmarks page than a Cyrix 6x86 running at 120
mhz. I get 13.6 fps at the very start, full screen, vid_mode 0... and the
Cyrix was rated at 11.1 fps or something... The difference?

Everybody now... :)

THE FPU!

Cyrix's appear to be rather substandard compared to a Pentium's... read
comp.sys.ibm.pc.chips and watch the fun; the Cyrix vs. Pentium debates!

That's why I ordered a Pentium 133 chip Monday. When I get home later;
I'll install it and hopefully be able to laugh at 6x86 P166+'s... :)

Disclaimer: I'll be laughing at the chip, not its users! What do I
know; I bought a Packard Bell... :)

> Luc Gaudreault


Brian English aka "Captain Camshaft"
====================================
bx...@freenet.buffalo.edu
DOOM II Levels:
Satan's Workshop (STNSWRKS.ZIP)
Escape From Damnation I: The Prison (ESCAPED1.ZIP)
Escape From Damnation II: The Cavern (ESCAPED2.ZIP)
Under construction:
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using DETH v3.92 and ZenNode v0.98a


The Lord Leto II

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Aug 8, 1996, 3:00:00 AM8/8/96
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In article <01bb83b4$c2826ce0$063e...@LUCG.microtempus.com> "Luc Gaudreault" <lu...@microtempus.com> writes:
>Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
>Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
>Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
>that it was on the Cyrix. Is that possible?

Yes, the Cyrix has a *very* weak FPU, though in integer calculations
it is capable.

>I know Quake is supposed to be optimized for Intel Pentium but it still
>seems a bit of a stretch that the performance change could be this great.

Who do you believe more, a company's hype or your friend?

Adam Williamson

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Aug 8, 1996, 3:00:00 AM8/8/96
to

In article <08AUG96.02...@ACADEMIC.NEMOSTATE.EDU>, The Lord Leto
II <T9...@ACADEMIC.NEMOSTATE.EDU> writes

>Who do you believe more, a company's hype or your friend?
>
Depends on the friend. :)

spam

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Aug 9, 1996, 3:00:00 AM8/9/96
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In article <01bb83b4$c2826ce0$063e...@LUCG.microtempus.com>, Luc Gaudreault,
(lu...@microtempus.com) babbles...

>
>Just a simple question: Someone at work bought a Cyrix 6x86 P150+, played
>Quake on it, for a certain reason exchanged the Cyrix P150+ for an Intel
>Pentium 120Mhz and he told me that Quake is much faster on the Intel 120
>that it was on the Cyrix. Is that possible?
>
>I know Quake is supposed to be optimized for Intel Pentium but it still
>seems a bit of a stretch that the performance change could be this great.
>
>Can anyone comment on this?

thats because cyrix /amd 586/686 cpus have the fpu of a 486... very slow
the intel pentium has a much faster fpu than either of them
the connection is that quake uses alot of fpu.. in fact quake wont even run on
a processor that doesnt have fpu (486sx/386 w/o a co-pro/nexgen 586 etc...)

spam


Bill Krause

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Aug 11, 1996, 3:00:00 AM8/11/96
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Adam Williamson wrote:
>
> In article <08AUG96.02...@ACADEMIC.NEMOSTATE.EDU>, The Lord Leto
> II <T9...@ACADEMIC.NEMOSTATE.EDU> writes
> >Who do you believe more, a company's hype or your friend?
> >
> Depends on the friend. :)

Depends also on the Company.

Bill Krause
Bill_...@ccm.ssd.intel.com

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