Yeah, youve pretty much got it.
The i820 and 440BX are chipsets that the motherboards use. The i820 is the new intel one made for the P3 coppermine and the 440BX is an old intel one made for the P2 ans P3 non-coppermine. The AsusP3V4X uses the VIA chipset for the P3. The best chipset right now is the 440BX. A new asus motherboard, the CUBX is made for coppermine P3s and it uses the 440BX chpset. The CUBX can run P3s up to 800MHz, and Celeron2s.
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-Charlie
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