> most drives fake it, particularly when they detect benchmark-like behavior.
{{citation-needed}}
> If you pay twice as much for a drive, you might get better behavior. Or you might only pay more.
I generally find the difference per GB to be 6:1 going from even enterprise SATA drives to Enterprise SCSI (U-160 or faster, 10K or faster). My experience is that I get what I pay for, YMMV.