IDE hard disks roundup (September 2000)
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Quantum lct15 |
WD Spartan WD75DA |
WD Caviar WD450AA |
WD Caviar |
| Capacity |
30.02/20.42 / 15.02 / 7.51 GBytes |
7.5 GBytes |
45.02 GBytes |
20.5 / 15.3 / 10.2 GBytes |
| Spindle rotation rate |
sub-7,200 RPM |
4500 RPM |
5400 RPM |
5400 RPM |
| Buffer size |
512 KBytes |
2 MBytes |
2 MBytes |
2 MBytes |
| Head quantity |
4 / 3 / 2/1 |
? |
6 |
4 / 3 / 2 |
| Disks quantity |
2 / 2 / 1/1 |
? |
3 |
2 / 2 / 1 |
| Average delay time (Latency) |
? |
6.67 ms |
5.5 ms |
4.2 ms |
| Average search time at reading |
12.0 ms |
15.0 ms |
9.5 ms |
8.9 ms |
| Average search time |
2.0 ms |
2.0 ms |
2.0 ms |
2.0 ms |
| Average search time at reading |
24.0 ms |
28.0 ms |
19.0 ms |
21 ms |
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