VOGONS


Cyrix/ST/IBM Aiming for the stars!

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Reply 60 of 98, by Sphere478

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https://www.ebay.com/itm/393986256415

More 2.2v cpus on the bay

Sphere's PCB projects.
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Sphere’s socket 5/7 cpu collection.
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Reply 61 of 98, by heckyeah

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RLP1toD.jpg

So I did receive that 2.2v 300gp and it happily seems to work at 2.4v and 333mhz so here's some testing I did with a GF2 MX400 and a P5A 1.04. I didn't really tweak any settings yet or even install a soundcard so it's not really an "official submission"

Reply 62 of 98, by Sphere478

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heckyeah wrote on 2022-04-15, 14:04:
https://i.imgur.com/RLP1toD.jpg […]
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RLP1toD.jpg

So I did receive that 2.2v 300gp and it happily seems to work at 2.4v and 333mhz so here's some testing I did with a GF2 MX400 and a P5A 1.04. I didn't really tweak any settings yet or even install a soundcard so it's not really an "official submission"

Nice!

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 63 of 98, by Tetrium

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heckyeah wrote on 2022-04-15, 14:04:
https://i.imgur.com/RLP1toD.jpg […]
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RLP1toD.jpg

So I did receive that 2.2v 300gp and it happily seems to work at 2.4v and 333mhz so here's some testing I did with a GF2 MX400 and a P5A 1.04. I didn't really tweak any settings yet or even install a soundcard so it's not really an "official submission"

That's quite an overclock! The regular frequency of that CPU is something about 225MHz or 233MHz, right?

Whats missing in your collections?
My retro rigs (old topic)
Interesting Vogons threads (links to Vogonswiki)
Report spammers here!

Reply 64 of 98, by heckyeah

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Tetrium wrote on 2022-04-16, 08:13:
heckyeah wrote on 2022-04-15, 14:04:
https://i.imgur.com/RLP1toD.jpg […]
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RLP1toD.jpg

So I did receive that 2.2v 300gp and it happily seems to work at 2.4v and 333mhz so here's some testing I did with a GF2 MX400 and a P5A 1.04. I didn't really tweak any settings yet or even install a soundcard so it's not really an "official submission"

That's quite an overclock! The regular frequency of that CPU is something about 225MHz or 233MHz, right?

Yup! Maybe there's something to it that 2.2v chips are good clockers anyway since mine did seem to do 300mhz at 2.2v quite well too.

Reply 65 of 98, by Sphere478

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Pretty sure that the 2.2v cores use the same core as the 433gp, just binned for 300gp.

Sphere's PCB projects.
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Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 66 of 98, by Tetrium

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Sphere478 wrote on 2022-04-17, 00:10:

Pretty sure that the 2.2v cores use the same core as the 433gp, just binned for 300gp.

It's rather unclear what exact process node was used for what chips when it comes to the later Cyrix CPUs.

Whats missing in your collections?
My retro rigs (old topic)
Interesting Vogons threads (links to Vogonswiki)
Report spammers here!

Reply 67 of 98, by Anonymous Coward

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Isn't the case pretty much closed on that one? I thought all 2.2v parts are .18 micron.

"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium

Reply 68 of 98, by Tetrium

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Anonymous Coward wrote on 2022-04-17, 04:37:

Isn't the case pretty much closed on that one? I thought all 2.2v parts are .18 micron.

It is? I don't know actually. Could be I just missed it?
I do know is that years ago nobody really knew, was this mystery solved in the meantime? I'd like to learn about it.

Whats missing in your collections?
My retro rigs (old topic)
Interesting Vogons threads (links to Vogonswiki)
Report spammers here!

Reply 69 of 98, by Anonymous Coward

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It's buried somewhere on CPU-World. I think they came to the conclusion that 2.2V was much too low for a .25 micron CPU, so the process must have changed. I believe several CPUs were de-lidded to confirm this.

"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium

Reply 70 of 98, by Sphere478

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In the case of the 300 2.2 vs a 400/433 2.2:

The back of the chips where the lids are have changed shapes as different cores were used. The 2.2v 300 is identical to a 400/433gp where as a 2.9v 300gp is larger

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 71 of 98, by heckyeah

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aquJ8KM.jpg

WA4aqtB.jpg

Here's the differences on the back. 2.2v is smaller than 2.9v.

I think I have all the different processes here. The P166s should be the same process as the lower voltage *L CPUs. The P150 is comparatively huge.

Reply 72 of 98, by Sphere478

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Good job. Yep!

If you look on the back of the pentium mmx chips also they changed the epoxy pond shape a few times there also. Though I’m not sure if there is as direct of a correlation there. Size and shape seemed to change with them. Guessing size was more significant than shape.

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 73 of 98, by Sphere478

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Nemo1985 wrote on 2022-03-12, 16:21:
So just to be clear since I received the accusation that my methodology of testing is flawed, without any proof, nonetheless. […]
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So just to be clear since I received the accusation that my methodology of testing is flawed, without any proof, nonetheless.

I tested some of the Cyrix\ibm cpus in my collection, I did the msdos test suite only since despite what someone says their result are quite steady (the margin of error is contained in 0,1 fps or 1 tick in doom), I don't think it's a coincidence that the number are pretty much the same with different cpus tested.
I also used 6x86ctl with -q switch to have a briefly check of the revision and enabled features (zipped as attachment), first letter identify the cpu brand (cyrix or ibm), the numbers is the pr-rating printed on the cpu, for pr333 the last letter indicates the top color s for silver, g for gold.

Test Machine:

Cyrix\ibm cpus at 200 mhz (100x2)
Aopen AX59PRO 1mb cache
128 mb memory 7ns with tightest timings
Geforce 2mx400 video card
Compact flash card

Enough with empty words and let's just show numbers.

Tested cpus:
01.jpg
02.jpg

Benchmarks:
photo_2022-03-12_17-17-24.jpg

So apparently the problem is not the voltage, there has been a performance cut between the pr300 and pr333, since the frequency and bus are the same on my testing, it's clear enough that they changed something in the cpu, and even revision doesn't seem to matter.

Feel free to prove me wrong or right with your tests and not empty accusations.

I just noticed, it seems the 433gp cores are even easier to spot being that they have extra pins, five pins thick diagnally on all four sides.

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 74 of 98, by Necrodude

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This is a fun thread. I need to bench my cyrix cpus and join the fun. 😀

It would be sweet if some of the people here could try out wintune97 and export their results to a wtx file and post it here or in this thread:

Post your Wintune97 scores here!

Wintune97 is a benchmarking program that tests the computers ALU FPU VGA disk and ram speed. It also has a database that stores the benchmarked scores. You can import and export scores to wtx files that you can share.

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Last edited by Necrodude on 2022-05-07, 11:48. Edited 1 time in total.

Reply 75 of 98, by Tetrium

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Sphere478 wrote on 2022-04-27, 14:51:
Nemo1985 wrote on 2022-03-12, 16:21:
So just to be clear since I received the accusation that my methodology of testing is flawed, without any proof, nonetheless. […]
Show full quote

So just to be clear since I received the accusation that my methodology of testing is flawed, without any proof, nonetheless.

I tested some of the Cyrix\ibm cpus in my collection, I did the msdos test suite only since despite what someone says their result are quite steady (the margin of error is contained in 0,1 fps or 1 tick in doom), I don't think it's a coincidence that the number are pretty much the same with different cpus tested.
I also used 6x86ctl with -q switch to have a briefly check of the revision and enabled features (zipped as attachment), first letter identify the cpu brand (cyrix or ibm), the numbers is the pr-rating printed on the cpu, for pr333 the last letter indicates the top color s for silver, g for gold.

Test Machine:

Cyrix\ibm cpus at 200 mhz (100x2)
Aopen AX59PRO 1mb cache
128 mb memory 7ns with tightest timings
Geforce 2mx400 video card
Compact flash card

Enough with empty words and let's just show numbers.

Tested cpus:
01.jpg
02.jpg

Benchmarks:
photo_2022-03-12_17-17-24.jpg

So apparently the problem is not the voltage, there has been a performance cut between the pr300 and pr333, since the frequency and bus are the same on my testing, it's clear enough that they changed something in the cpu, and even revision doesn't seem to matter.

Feel free to prove me wrong or right with your tests and not empty accusations.

I just noticed, it seems the 433gp cores are even easier to spot being that they have extra pins, five pins thick diagnally on all four sides.

Nice, I hadn't noticed this myself 🤣
I'll check my own stash of Cyrix CPUs to see if I can verify this and if there's any outliers in there 😋that is if I don't forget.

Whats missing in your collections?
My retro rigs (old topic)
Interesting Vogons threads (links to Vogonswiki)
Report spammers here!

Reply 76 of 98, by lukas12p

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CyrixPR400-285@333MHz_W98_GF2GTS_3Dm2000
3x95MHz @ 3,5x95MHz
on MVP3 motherboard with 2MB cache
with 100MHz FSB it is not stable

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Reply 77 of 98, by Jasin Natael

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Here is my humble little rig.
I decided to remove the k6-2+ from my Tekram p5MVP-B4-1M and try out my Cyrix.
This is a 2.0v Cyrix MII-266GP
It is clocked at 350mhz 3.5*100@ 2.4volt
It would post boot and be somewhat stable at 2.2v and 2.3v but not quite.
It actually remains very cool with just a socket 370 cooler, same as I used with the K6-2+ but the K6 really pumped out the heat at anything over 2.0v

Anyway other specs are a single stick of PC133 Cl2 256MB
Voodoo 3 3000@183mhz

First time attempting to post screen caps so go easy on a guy?
Another shout out to Sphere478 for the inspiration and guidance on the CPU purchase.

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Reply 78 of 98, by Sphere478

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No prob 😀 glad to see you are having fun with it!

Try double sided 64 mb and 128 mb see if that boosts scores. 😀

What other video cards do you have?

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 79 of 98, by Jasin Natael

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Sphere478 wrote on 2022-09-22, 01:05:

No prob 😀 glad to see you are having fun with it!

Try double sided 64 mb and 128 mb see if that boosts scores. 😀

What other video cards do you have?

Yeah, I was thinking about trying some other sticks. I actually put my GeForce 2 GTS in there , thinking the hardware TnL would help my scores. But for whatever reason I couldn't get it to install. Tried several driver versions but kept throwing errors. Not sure what was going on, but kinda ran out of time and had to get kids to bed. I will see about getting it working and maybe try some Radeon cards as well. I have 7200, 7500, 8500 and a few other GeForce cards as well.