Seagate 120GB 2.5" SATA vs Seagate 30GB HDD

Key differences

The Seagate 120GB 2.5" SATA has 90 GB more HDD capacity than the Seagate 30GB HDD (120 GB vs 30 GB). The Seagate 120GB 2.5" SATA has 1,200 RPM more HDD speed than the Seagate 30GB HDD (5400 RPM vs 4200 RPM). The Seagate 120GB 2.5" SATA has 6 MB more storage drive buffer size than the Seagate 30GB HDD (8 MB vs 2 MB). Interface: Serial ATA on the Seagate 120GB 2.5" SATA, Ultra-ATA/100 on the Seagate 30GB HDD. Storage temperature (T-T): -40 - 70 °C on the Seagate 120GB 2.5" SATA, -40 - 65 °C on the Seagate 30GB HDD.

• HDD capacity
  • 120GB 2.5" SATA:120 GB
  • 30GB HDD:30 GB
• HDD speed
  • 120GB 2.5" SATA:5400 RPM
  • 30GB HDD:4200 RPM
• Interface
  • 120GB 2.5" SATA:Serial ATA
  • 30GB HDD:Ultra-ATA/100
• Storage drive buffer size
  • 120GB 2.5" SATA:8 MB
  • 30GB HDD:2 MB
• HDD number of heads
  • 120GB 2.5" SATA:4
  • 30GB HDD:2
• Average seek time
  • 120GB 2.5" SATA:12.5 ms
  • 30GB HDD:12 ms
• Start/stop cycles
  • 120GB 2.5" SATA:600000
  • 30GB HDD:20000
• Power consumption (standby)
  • 120GB 2.5" SATA:0.28 W
  • 30GB HDD:0.36 W