Here's one that performed better than expected when carried out on my main play system (4 yr old):
Long Bench 32MB Zone
Maxtor 82GB 7200RPM 8MB Buffer UDMA 6 (3 yr old, 62GB full)
AMD Duron 1.3GHz
300W Generic PSU
1.5GB DDR400
Sequential Read Speed Peak = 61MB/s
Burst Speed = 100.8MB/s
Random Access = 14.9ms
CPU Utilization = 8%
Av. Read = 49.3MB/s
Repeated with my professional system
Kentsfield 2.66GHz Quad core
OCZ Ballistix Tracer DDR2800 4GB
Seasonic 650W PSU
Sequential Read Speed Peak = 72MB/s
Burst Speed = 121.5MB/s
Random Access = 11.0ms
CPU Utilization = 1%
Av. Read = 57.9MB/s
Some difference there. The rest of the drives here with me are ITB and 1.5TB external through FireWire800 and SCSI (which aren't compatible with the older spec AMD), so I'll leave them for now.