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The World's Fastest 486

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Reply 460 of 527, by feipoa

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It is in Quake. There are some synthetic benchmarks in which WB is faster in Windows though.

Ultimate 486 Benchmark | Ultimate 686 Benchmark | Cyrix 5x86 Enhancements | 486 Overkill Graphics | Worlds Fastest 486

Reply 465 of 527, by Chadti99

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I was able to pull 19fps on a Lucky Star 486e-C2 with an AMD 5x86 ADW clocked at 180(60x3). Strangely it’s most stable at 3v.

256k l2 - 15ns
PCI divider 1:1
16MB FPM 60ns
Riva 128 and Voodoo Banshee (same score)

I had to lower l2 cache timing to the slowest 323 settings to boot.

Would faster 12ns sram chips allow me to lower those timings any?

Is there a specific version of the bios I should be using over stock that might help?

Any other ideas to improve my score?

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Reply 466 of 527, by feipoa

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pshipkov, was this run at 180 MHz or 200 MHz? When do you get your trophy?

Last edited by feipoa on 2021-08-05, 20:28. Edited 1 time in total.

Ultimate 486 Benchmark | Ultimate 686 Benchmark | Cyrix 5x86 Enhancements | 486 Overkill Graphics | Worlds Fastest 486

Reply 467 of 527, by Chadti99

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feipoa wrote on 2021-08-05, 11:52:

pshipkov, I think what is most impressive is that you beat CPU-Galaxy's Quake 1.06 score by 0.2 fps (21.8 fps vs. 21.6 fps) using 20 MHz less CPU power. When do you get your trophy?

A trophy should be awarded!

His best score was at 180MHz?

Reply 468 of 527, by The Serpent Rider

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Chadti99 wrote on 2021-08-05, 11:17:

Any other ideas to improve my score?

Better L2 chips, VESA mode, different chipset or motherboard. Apparently UMC mobos are the fastest in this discipline, but none are hassle free as SIS ones.

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Reply 470 of 527, by Chadti99

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lukas12p wrote on 2021-08-05, 13:49:

I think we should not change software side (like VESA), just run the same Quake benchmark from Phils dosbench pack, like CPU-Galaxy and make it only "hardware battle" 😀

I would agree for this thread. Kinda like all-motor drag races. No cheats like NOS 🤣. But I also want to see the absolute fastest no matter the method.

Reply 471 of 527, by pshipkov

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Feipoa:
That score above was at 200MHz.
Still combing through some 180MHz stuff, but thinking to check the 200MHz more thoroughly at some point later.
Had a brief glimpse the other day into Asus VLI GX4 + Ark1000VL running at 200MHz. It was interesting. 😀

Chadti99:
LS boards like their CPUs at 3.3V for 180MHz.
With good 15ns L2 cache chips you can get to 3-1-2 and get half a frame higher.
12ns chips didn't improve things. Same for diff BIOS versions.

Also, i saw a comment from you in another thread about running 180mhz with Biostar UUD.
Good stuff.

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Reply 472 of 527, by Chadti99

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pshipkov wrote on 2021-08-05, 17:40:
Feipoa: That score above was at 200MHz. Still combing through some 180MHz stuff, but thinking to check the 200MHz more thoroughl […]
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Feipoa:
That score above was at 200MHz.
Still combing through some 180MHz stuff, but thinking to check the 200MHz more thoroughly at some point later.
Had a brief glimpse the other day into Asus VLI GX4 + Ark1000VL running at 200MHz. It was interesting. 😀

Chadti99:
LS boards like their CPUs at 3.3V for 180MHz.
With good 15ns L2 cache chips you can get to 3-1-2 and get half a frame higher.
12ns chips didn't improve things. Same for diff BIOS versions.

Also, i saw a comment from you in another thread about running 180mhz with Biostar UUD.
Good stuff.

Got it, yah maybe with 12ns chip I can achieve those settings, I’ll give it a shot. Are my scores in-line with what you are getting for 180MHz?

Here is my UUD score for others that haven’t seen it.

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Reply 473 of 527, by pshipkov

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You got a good number. I am seeing the same.
Here is a post with bunch of details about this board at 180MHz, with following discussion.
There are few more posts after that for boards running at 180MHz. Will add few more to the list in the coming days.

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Reply 474 of 527, by feipoa

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pshipkov wrote on 2021-08-05, 22:01:

You got a good number. I am seeing the same.
Here is a post with bunch of details about this board at 180MHz, with following discussion.
There are few more posts after that for boards running at 180MHz. Will add few more to the list in the coming days.

Are you able to compare the MB-8433UUD at 3x60 (180 MHz), 3x66 (200 MHz), and 4x50 (200 MHz) with that of the M918 using the best stable timings?

Ultimate 486 Benchmark | Ultimate 686 Benchmark | Cyrix 5x86 Enhancements | 486 Overkill Graphics | Worlds Fastest 486

Reply 476 of 527, by jakethompson1

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Chadti99 wrote on 2021-08-05, 23:42:

Would these 12ns sram chips work on socket 3 boards for 256k cache?

https://www.ebay.com/itm/QTY-15-IS61LV256-12N … 1-127632-2357-0

Not sure what "low voltage" means but doesn't sound right. Should check the datasheet and see if they are 5 volts.

However, you can still get brand new 12ns 32KB chips. Like #71256SA12TPG at Digi-Key.

Reply 477 of 527, by Chadti99

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jakethompson1 wrote on 2021-08-05, 23:46:
Chadti99 wrote on 2021-08-05, 23:42:

Would these 12ns sram chips work on socket 3 boards for 256k cache?

https://www.ebay.com/itm/QTY-15-IS61LV256-12N … 1-127632-2357-0

Not sure what "low voltage" means but doesn't sound right. Should check the datasheet and see if they are 5 volts.

However, you can still get brand new 12ns 32KB chips. Like #71256SA12TPG at Digi-Key.

I should of thought of that, they appear to be 3volt parts.

Reply 478 of 527, by feipoa

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jakethompson1 wrote on 2021-08-05, 23:46:
Chadti99 wrote on 2021-08-05, 23:42:

Would these 12ns sram chips work on socket 3 boards for 256k cache?

https://www.ebay.com/itm/QTY-15-IS61LV256-12N … 1-127632-2357-0

Not sure what "low voltage" means but doesn't sound right. Should check the datasheet and see if they are 5 volts.

However, you can still get brand new 12ns 32KB chips. Like #71256SA12TPG at Digi-Key.

Have you ordered these? Could you share a photo? I recall someone here ordered them and wasn't impressed.

Ultimate 486 Benchmark | Ultimate 686 Benchmark | Cyrix 5x86 Enhancements | 486 Overkill Graphics | Worlds Fastest 486

Reply 479 of 527, by pshipkov

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These 12ns chips are good in my opinion - had and have good experience with them.

feipoa wrote on 2021-08-05, 22:13:

Are you able to compare the MB-8433UUD at 3x60 (180 MHz), 3x66 (200 MHz), and 4x50 (200 MHz) with that of the M918 using the best stable timings?

Since we are talking about Quake 1 fps here.

3x60=180: 20.1
3x66=200: 18.5
4x50=200: 20.8

Notice the differences in BIOS settings (attached pictures) between the two 200MHz configurations.

As we talked in the other thread - 4x50 is easy, stable, fast. System is within specifications. Every decent motherboard can do it if the right CPU is in place.
3x66 - pain in the butt - most motherboards cannot do it, the ones who can are on the edge = mostly unstable, requires good components, relaxed BIOS settings, often slower than 3x60 let alone 4x50.

video: 3x66
video: 4x50

Forgot to turn-on the UMC IDE driver for 4x50. Perf is around 8-9Mb/s reported by SpeedSys.
At 3x66 the driver hangs right away, no matter what settings are used.

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Last edited by pshipkov on 2021-08-06, 00:57. Edited 3 times in total.

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