mubs said:
Care to elaborate with numbers, Sir?
I typically use a "real world" benchmark as simple read or write copy jobs consisting of large files (for example -- a dozen or so 800 MB binary files) or sometimes a folder full of small files (for example -- a few thousand 50 KB binary files).
I time with a stop watch how long it takes to write or to read a "punishing" copy job like the ones described above. The one I did with the 750 GB Barracuda 7200.10 and the Hitachi 7K250 was a bit of a mixed job with about a 100 random small files and something like 7 GB of large files 600 GB or 700 GB TIFF files.
With both drives freshly formatted with an NTFS file system and empty, copying from a Seagate 36 GB 15K.4 SAS hard drive (source drive), the Hitachi 250 GB SATA2 drive took 3 minutes and 2 seconds to complete the write job. The Seagate 750 GB SATA2 drive did it in 1 minute 50 seconds. I did the the twice just to make sure.
Normally, I've been using the Hitachi 7K250 as a backup target using MS Backup (that's what I bought it for). I did two identical backup jobs -- one with the Hitachi 7K250 and another with the Seagate 750GB drive. Both completed in close to 8 minutes or so. The Seagate was 15 seconds faster, which doesn't mean much other than MS Backup is the bottleneck.