Nevermind, I figured it out. Since this is an older board, I also had to change JP7 from 2-3 to 1-2 like it is here in the manual https://manualsbrain.com/en/manuals/1188422/?page=23
It wasn't good enough just to change FSB and multiplier to make it work as 100Mhz FSB.
Now it even boots to windows xp even when using 6x100Mhz if you go up to 2.2V. (Not a good idea, I know)

Baoran wrote:

Nevermind, I figured it out. Since this is an older board, I also had to change JP7 from 2-3 to 1-2 like it is here in the manual https://manualsbrain.com/en/manuals/1188422/?page=23
It wasn't good enough just to change FSB and multiplier to make it work as 100Mhz FSB.
Now it even boots to windows xp even when using 6x100Mhz if you go up to 2.2V. (Not a good idea, I know)

2.2v is fine as long as you have a decent cooler.

That has always been the hardest thing for me to figure out how good cooler I have when it comes to old hardware. I had to replace the stock fan with a different 50mm fan I had because the noise was horrible with those bad bearings 😜
I assume K6-III+ doesn't have thermal sensor and you can't use software to check temperatures?

Just go by size and use good heat transfer paste.
A high(spacially) SS7 cooler is often enough to transfer plenty of heat.
Of course nobody can give any guarantees on how long the cpu is able to withstand said "punishment".
I see old cpus still working, despite having been too hot to touch while running for 20 years, so I take the guess that a well cooled "part" may survive its owner.

Baoran wrote:

That has always been the hardest thing for me to figure out how good cooler I have when it comes to old hardware. I had to replace the stock fan with a different 50mm fan I had because the noise was horrible with those bad bearings 😜
I assume K6-III+ doesn't have thermal sensor and you can't use software to check temperatures?

The K6-II+ and K6-III+ CPUs run much cooler than the K6-2 and K6-III CPUs.

The best type of cooler is going to be one with thin fins. Most of the old coolers had horribly thick fins which are really bad for heat dissipation.

I picked up a couple of these last year for socket 7 builds.
http://www.antec.com/product.php?id=705027&lan=nz

I can't say I have very thin fins. Here is a picture. Fan is this one http://gelidsolutions.com/thermal-solutions/c … e-fan-silent-5/
I didn't really have anything else to replace it with currently. Thermal paste is just normal arctic silver 5.
Still, the heat sink has never even gotten warm during my tests. It would be nice to be able to see the actual cpu temperature numbers.
I assume the temperatures are probably closet to normal k6-3 because I am using higher voltage than 1.6V.

Baoran wrote:

I can't say I have very thin fins. Here is a picture. Fan is this one http://gelidsolutions.com/thermal-solutions/c … e-fan-sile […]
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I can't say I have very thin fins. Here is a picture. Fan is this one http://gelidsolutions.com/thermal-solutions/c … e-fan-silent-5/
I didn't really have anything else to replace it with currently. Thermal paste is just normal arctic silver 5.
Still, the heat sink has never even gotten warm during my tests. It would be nice to be able to see the actual cpu temperature numbers.
I assume the temperatures are probably closet to normal k6-3 because I am using higher voltage than 1.6V.

20180108_193017.jpg

You severely underestimate exactly how hot the original K6-III chips ran.

They were also on a larger process node of .25 instead of the .18 of the + models.

Stock voltage for the normal K6-III chips was also higher at 2.2v-2.4v.

When the K6-III chips came out, the biggest con was how hot they ran and second was how poorly they overclocked because of that.

The K6-II+ and K6-III+ are probably A-OK with the not so good heatsinks because of how cool they run compared to the K6-II and especially K6-III chips.

I just like to have really good cooling and really despised and still despise the crappy coolers that were available back then.

The heatsink I am using was actually most likely stock heatsink for K6-2 300Mhz if I remember correctly. I thought they had tdp of around 17W, so how hot they can get with that tdp?