swaaye wrote:ATA33 is a bit of a bottleneck. It's not a big deal by any stretch but I've repeatedly noticed a speed up by running a UDMA 66 card on my 440BX board instead of the UDMA 33. Of course it helps if you are running a Tualatin on a Slotket and not a PII 300 or something like that. Though since it is sort of a pain to deal with extra PCI cards, I usually don't bother.
The fastest CPU I have is a 1.1 GHz Coppermine through a slot 1 adapter. That setup is amazingly fast, a real joy to work and game on. I never had much luck in getting the DMA to work in PCI Sata controllers. Might be an incompatibility with the AOpen board though. The IDE ports always "just work" for me.
The other challenge is finding a good way to measure an improvement in performance, not so much a synthetic score, but something that actually makes a difference. For example when installing Windows 98 SE with an automated answer file, I observed little difference between a SATA HDD and a SSD.