More photos :

Maybe a read through the thread:
Marvin, the Paranoid Android//Video// "AMD K6 3DMARK, aiming for stars." can help you.

AMD K6 3DMARK, aiming for stars.

Don't worry about the K6 III+ being from 2000, the Gf MX 420 card you chose for your project seems to be from 2002 ?

Yes, I have been viewing Philscomputerlab.com videos for recommendations.

What I have learned:
1 stick of 256mb. Performs best.
For DOS games the PCI Nvidia FX5500 works fine.

My questions are:
1) What sound card is most compatible with old DOS games ( SB PRO 2.0, Yamaha Audician-32, SB Vibra-16 with Yamaha OPL3, SB AWE64 ) .

2) Should I use a Voodoo-3-3000 AGP in a AMD K6-3-500mhz. DOS gaming computer or should I save it for a more powerful computer like a P3-1ghz ?

3) Should I just make this a DOS gaming computer and not windows ?

PARKE wrote:

Don't worry about the K6 III+ being from 2000, the Gf MX 420 card you chose for your project seems to be from 2002 ?

I’m guessing the Geforce 256 is the real unicorn but Geforce2 MX is acceptable alternative.

I also have one like this,very good performance, can compete to Pentium ii

Yes, I have been viewing Philscomputerlab.com videos for recommendations.
>>
>>
That is a totally different source.
Your K6 thread uses the term 'Ultimate'.
Unless you use a -very- different rationale for the term 'Ultimate' it could be to your advantage to check out the 'aiming for the Stars' thread:

AMD K6 3DMARK, aiming for stars.

PARKE wrote:

Yes, I have been viewing Philscomputerlab.com videos for recommendations. >> >> That is a totally different source. Your K6 thr […]
Show full quote

Yes, I have been viewing Philscomputerlab.com videos for recommendations.
>>
>>
That is a totally different source.
Your K6 thread uses the term 'Ultimate'.
Unless you use a -very- different rationale for the term 'Ultimate' it could be to your advantage to check out the 'aiming for the Stars' thread:

AMD K6 3DMARK, aiming for stars.

Well, I am not to concerned with Overclocking. This Soyo motherboard only supports 5x multiplier at 5x100mhz or 5.5x66mhz.
So 500mhz is as high as I can overclock this 450mhz. CPU.
500mhz. is fine for Windows-98se. and more than enough for DOS games.
But is it enough for Voodoo-3 video card games ?

What I mean by Ultimate is best game compatibility in DOS and Windows 98se.

What I am most concerned about is choosing the best sound card and video card for DOS compatibility, performance and quality.

Other Parts I have avalaible:
Voodoo-3-3000 AGP
Nvidia fx 5500 PCI
Cirrus logic and S3 , ISA graphics cards.
SB Vibra 16 with Yamaha OPL-3 , ISA
SB Pro 2.0 with Yamaha OPL-3, ISA
Yamaha Audician-32 , OPL-3, ISA
SB live 5.1, PCI
SB live, PCI
SB Audigy-2zs , PCI

Set the multiplier to 2x and the CPU will read it as 6x.

cyclone3d wrote:

Set the multiplier to 2x and the CPU will read it as 6x.

I don’t think this CPU can handle 600mhz.
Maybe 550mhz ?

What motherboard settings do I need ?

Here is the manual:
https://stason.org/TULARC/pc/motherboards/S/S … um-SY-5EHM.html

I have the CPU voltage set at 2.2v

[quote] If you want the maximal performance I suggest a 0.18 micron K6-2+ or K6-3+ depending on the speed and money you want to throw at it. If the CPU requires a 6x multiplier and your motherboard doesn’t provide that in the manual
>>>
remember that you can set your motherboard to 2.0x and the CPU will act as it is 6.0x
<<<
this is available with the K6-2 CTX cores and later.
[unquote]
http://www.amd-k6.com/platform-hardware/

Model /Part // Freq. // FSB(MHz) // // L2 cache // Socket
oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
K6-III+ AMD-K6-III+/450ACZ // 450 MHz // 100 // 256KB // Super socket 7
K6-III+ AMD-K6-III+/475ACZ // 475 MHz // 95 // 256KB // Super socket 7
K6-III+ AMD-K6-III+/500ACZ // 500 MHz // 100 // 256KB // Super socket 7
---
http://www.cpu-world.com/CPUs/K6-III/AMD-Mobi … %2B-450ACZ.html

Model /Part // Freq. // FSB(MHz) // // L2 cache // Socket
oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
K6-IIIE+ K6-III+/400ACR // 400 MHz // 100 // 256KB // Super socket 7
K6-IIIE+ K6-III+/400ATZ // 400 MHz // 100 // 256KB // Super socket 7
K6-IIIE+ K6-III+/450ACR // 450 MHz // 100 // 256KB // Super socket 7
K6-IIIE+ K6-III+/450APZ // 450 MHz // 100 // 256KB // Super socket 7
K6-IIIE+ K6-III+/500ACR // 500 MHz // 100 // 256KB // Super socket 7
K6-IIIE+ K6-III+/500ANZ // 500 MHz // 100 // 256KB // Super socket 7
K6-IIIE+ K6-III+/550ACR // 550 MHz // 100 // 256KB // Super socket 7
---
http://www.cpu-upgrade.com/CPUs/AMD/K6-IIIE+/index.html

oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

Motherboard manual.

If your K6 actually runs at 2.2v while having 2.4v imprinted, it probably will be a good specimen which can be nicely OCed.
I'd always use the numbers on the chips themselves.
My ones will go to the bay because I'll soon upgrade my IBM 5170 from a DFI K6BV3+ A1 mobo to a Pentium III 1400MHz Baby AT mobo, hoping for better performance with Descent 3 😀

@PARKE
I always thought that K6-3+ officially only went to 450MHz and K6-2+ only to 95/570 or 100/550. Never saw a higher chip. Do they actually exist??
Maybe there are chips listed that were announced but never became available?

EDIT:
Regarding the graphics card, I was looking at the FX 5500 too. However I am not sure whether DX9 is really used by games that were released until the beginnings of the 2000s? Currently have Nvidia Quadro NVS280 PCI (which is internally actually like Geforce 440MX) and Radeon 9250. I so often read that some time the real mode DOS support of many graphics cards got worse... will see when parts are here 😀

So what is the best setting for this CPU ?

450mhz - 4.5x100mhz
500mhz - 5x100mhz
333mhz 5.5x66mhz

I'd say, if you make sure that the fan on the S7 cooler is adequate, your K6-3 450 will probably run fine at 600MHz.

On the right hand you see the puny original fan of the S7 cooler, which doesn't look very trustworthy, on the left you see the cooler equipped with a quality Japanese fan scavenged from a DLP projector.

I just don’t know what jumper settings to use. 500mhz appears to be the highest this motherboard supports.
Can you tell by the manual ?

Intel486dx33 wrote:

I just don’t know what jumper settings to use. 500mhz appears to be the highest this motherboard supports.
Can you tell by the manual ?

For the CPU bus clock.. use the "Frequency Setting SW1" that is for 100Mhz

Then for the multiplier, use:
5x
5.5x (same as 3.5x)
6x (same as 2x)

JP7, JP9, JP10 are your CPU multiplier settings

SW1 is your bus speed settings.

One thing to note is that I am seeing 6 switches for the bus speed settings which tells me that there are a ton of undocumented settings. It is always fun to play with those as there are going to be some that run the PCI bus and AGP bus overclocked. PCI bus should be good up to about 37.5Mhz and AGP bus is good up to whatever your particular AGP card will handle.

You probably also have some undocumented bus speed settings that are over 100Mhz... probably 105, 110, 112, and maybe 115.

You probably also have 83, maybe 90, and 95Mhz bus speed settings.

A review says that there are settings for 60, 66, 68.5, 75, 83, 90, 100MHz and 112MHz.. but with that many dip switch settings there has to be more. With 6 switches, you have 64 possible different combinations.

You can always look up the spec sheet of the clock generator that is on your board to see exactly what it supports and work out the switch settings from there without have to write out a graph of the different settings yourself.

Playing with old SS7 boards was a blast back in the day.

Come to think of it, I may have the same board at home.

BinaryDemon wrote:

PARKE wrote:

Don't worry about the K6 III+ being from 2000, the Gf MX 420 card you chose for your project seems to be from 2002 ?

I’m guessing the Geforce 256 is the real unicorn but Geforce2 MX is acceptable alternative.

If only I'd known back in the days, that the GeForce 256 would become so rare. I used to have a Creative 3D Blaster Annihilator Pro. It was awesome 😁

Ok, some facts now.....

Overclocking a (mobile) k6-3+ to a really stable 600mhz or higher is not that easy, it will run etc. but getting it perfectly stable can be a challenge. So overclocking a normal k6-3 to 600mhz? GOOD LUCK getting that stable. 500mhz is about the highest setting you can use, and not all of them can reach that.

Beside all this, the 5,5x multi is a better setting for these cpu's as it is in most cases faster compared to the 2x (=6x). Don't know why! Using the 5,5x 110mhz is perfect for a k6-3+ as it also gives you the higher fsb.

About the voodoo3: some ss7 boards with VIA chipset used a cheaper linear voltage regulator for agp, instead of a switching regulator. On these boards the voodoo3 3000 can be too much, also other high end cards like the TNT2Ultra or Geforce2 Ultra could be best avoided. Using the versions that are a tad slower (but draw less current) like the v3 2000 or Banshee or a normal TNT2 is the way to go on those boards, MX cards draw even less current.

So check what sort of regulator is on your board before using a voodoo3 3000 agp. Pci versions are fine.

I might try 550mhz.
And the Voodoo3-2000 agp.

What about the sound card ? Which is best for DOS game compatibility and sound quality ?

SB AWE64 ISA
SB Vidra16 with Yamaha OPL3
Yamaha Audician 32 OPL3 ISA