Yes, K6/2, it was a typo. 105x5.
So lets repeat again: the Cyrix 6x86mx paired with era-correct video card will outperform the k6/2 with a non-peroid correct card.
A K6/2 with an fx5200 will be around 15 fps in games where a Cyrix 6x86mx running at 250mhz paired with a matrox G200 can easily reach 25 fps.
This is true for most games made before 1999 (croc, croc2, cmr2, basically every game i can think of).
Where do i know it? Thats my main retro rig. Not to mention the bugs and glitches the k6 will do with certain drivers.
My motherboard is an asus p5a-b.
I use 768 mbyte ram (3x256) which is mainly uncached due to the size.
The cyrix 6x86mx is currently running at 100x2.5.
And the second part: P3 will outperform a k6 under most games. In some games, it will outperform it around 2x-3x, even if they run at the same clock.
And you have built a computer which is useless for gaming, as it will fail to run both older and newer games properly, thats the point of the topic.
How you can fix this problem?
Getting a better video card?
No, actually you should get an older video card. And an older processor too, to avoid incompatibility, and bugs. Such as the ones i have listed above.
Otherwise i can imagine you desperately trying to overclock your cpu with some fx5800 or something, and not understanding why something runs with 10 fps when it should really run at 30 fps even on a pentium1 with a matrox g200.
You mentioned you are aware of the limitations of the platform, yet you are trying to run a video card in it which was designed with pentium4 in their minds.
You are not truely aware of the limitations. The thing you are trying to achieve, is not going to work. The only way to make it usable, is to scale it back.
You said you already have Athlon, well, then just leave everything post tnt2 to the athlon, and repurpose your super socket7 system to make somewhat usable.
What CPU you should get? A good, overclockable Pentium1 MMX or Cyrix 6x86MX.
What video card you should get? Matrox G200, S3 Savage4, nVidia TNT1, or at least a Riva128, Voodoo Rush, Permedia2, or Voodoo3. Preferably with older (!!!!) drivers.
What cpu you should avoid at all cost in ss7? Anything that has an AMD logo on it.