Hi
What brand and model is your motherboard ?
To see if your motherboard supports 75+ MHz FSBs, you'll have to check the manual, the motherboard prints in the PCB, the web... FSBs higher than 66 are not supported officially with the 430VX chipset... they're usually hidden or undocumented.
"Better CPU" ? Well, in this thread we're talking about refurbishing an old mobo with a K6-2 , K6-III or K6-2+ running at 6x66=400, 6x75=450 or 6x83=500 MHz.
To my knowledge there's no other cheap way to fit these old Socket7 mobos with better CPUs. And it's now very, very difficult to find a K6... maybe in the online auctions ?
Here's what you need:
1) A K6 CPU with CXT core (last K6-2's, all K6-III and K6-2+). This CXT core "translates" the 2.0x clock multiplier to 6.0x
2) A motherboard able to supply 2.0 to 2.2 V (or in some way "hackable")
3) Some luck
The mobo I'm using is somewhat useless because no more RAM can be added... the actual SDRAM DIMMs are misbehaved with old mobos...
Cheers
HamsterX