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HP 687045-001 3TB vs. HP 507616-B21 2TB + 5
Connection
S-ATA
Interface
S-ATA 6Gb/s
Form factor
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
2.5 inches
Cache size
32 MB
16 MB
Hybrid disk (SSHD)
Hard drive size (total)
3000 GB
2000 GB
1000 GB
6000 GB
2000 GB
450 GB
450 GB
Price/GB
0.04 £/GB
0.03 £/GB
0.04 £/GB
0.05 £/GB
0.02 £/GB
0.38 £/GB
0.17 £/GB
Hard drive
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Rotational speed
7200 RPM
7200 RPM
7200 RPM
7200 RPM
7200 RPM
15000 RPM
10000 RPM