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Originally Posted by Wickers
The bus interface does not make up for speed limitations of the drive itself. I mean, that's why ATA133 was kind of a joke when it came out, because drives were still having trouble pushing ATA66 to it's full ability. (let alone ATA100)...
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SerialATA-based drives are definitely faster than ParallelATA ones, so I'm not sure where you're coming from. Yes, for long read/write operations, drives barely even get to 50 MB/s, but what's much more significant is access times and short operations.
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But even with the upgrade, you'll get much better performance out of an external firewire drive enclosure, and a new (modern) desktop sized hard drive.
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So you're saying that even a 7200 RPM laptop drive will still be slower than a FireWire 400-based external solution? I have a hard time believing that, considering the hard drive enclosures I've seen benchmarked barely even reach 35 MB/s.