Which one is better? Which is more common? Because I'm planning to buy a HD and its a serial ATA, and I need an adaptor for that. Which would you recommend?
Ultra ATA is IDE I think, and SATA is a whole diferent thing. I believe that UATA is ATA133, correct me if I'm wrong. SATA is really fast, up to 150 MB/s, and SATA II is 300 MB/s.
Not recommended. IDE to SATA adapters create a bottleneck, plus the ability to find fully native SATA drives is as easy as finding IDE drives now. It used to be an issue, but not anymore.
If yer motherboard doesn't support SATA natively, you can get an addon card, but you'll experience a bottleneck in performance. Mobo's are so cheap now, and technology has moved so much recently, that yer better off just buying a whole new motherboard with native SATA support.
Correct me if I'm wrong, but the ATA-133 hard drives run at 133Mhz, right? If so when you see the actual numbers 133 for ATA and 150 for SATA they're talking about 2 diferent forms of measurement?
But with all this aside, If I had the money to go out and get a nice SATA drive I'd spend it on a SCSI instead. I'd kick myself in the ass for even thinking SATA.