marxveix wrote on 2025-11-02, 12:02:

I am new do this LFB and FastVid. Is it possible to have LFB performance boost to other CPU-s as well? […]
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Dan386DX wrote on 2025-11-02, 00:29:

Used SET6X86 to modify a register with the aim of tweaking LFB performance on my motherboard's onboard GPU (ATI Rage Pro 3D) - a bit like a DIY FastVid because FastVid won't work on this system.

I am new do this LFB and FastVid. Is it possible to have LFB performance boost to other CPU-s as well?

FastVid is for Intel
K6INIT is for AMD
CYRIX has no tool?

What about other less known CPU-s, like Transmeta Crusoe?

Good question, I honestly don't know - I'd have thought in theory it's possible on any x86 processor, although IIRC, Transmeta Crusoe while able to emulate x86 microcode is architecturally wildly different. It's possible a tool exists somewhere but seems unlikely

@feipoa

Well, this is embarassing.

It turns out, my SET6x86 tweak did *not* work.

You know what had triggered the VGA/LFB improvement? I'd switched the FSB/Multi jumpering from 83*1.5 to 100*1.5 and completely and utterly forgotten.

LFB scales with FSB (of course it does).

I'm going to take a little VOGONS break for shame. Thank you all for puting up with me 😁

FastVid is ok with all older configurations/video cards, and FVid gives good results on modern configurations and with today's video cards.
The latter, for example, gives about a 2x FPS increase with Q2DOS, with a relatively small GTX1650 card.