Dell 400GB SATA2 5400rpm 2.5" vs Dell DC290 internal hard drive

Key differences

The Dell 400GB SATA2 5400rpm 2.5" has 240 GB more HDD capacity than the Dell DC290 internal hard drive (400 GB vs 160 GB). The Dell DC290 internal hard drive has 1,800 RPM more HDD speed than the Dell 400GB SATA2 5400rpm 2.5" (7200 RPM vs 5400 RPM). The Dell DC290 internal hard drive has 1" more HDD size than the Dell 400GB SATA2 5400rpm 2.5" (3.5" vs 2.5"). Interface: Serial ATA II on the Dell 400GB SATA2 5400rpm 2.5", Serial ATA on the Dell DC290 internal hard drive. Operating voltage: 5 V on the Dell 400GB SATA2 5400rpm 2.5", 5 / 12 V on the Dell DC290 internal hard drive.

• HDD capacity
  • 400GB SATA2 5400rpm 2.5":400 GB
  • DC290 internal hard drive:160 GB
• HDD speed
  • 400GB SATA2 5400rpm 2.5":5400 RPM
  • DC290 internal hard drive:7200 RPM
• HDD size
  • 400GB SATA2 5400rpm 2.5":2.5"
  • DC290 internal hard drive:3.5"
• Interface
  • 400GB SATA2 5400rpm 2.5":Serial ATA II
  • DC290 internal hard drive:Serial ATA
• Operating voltage
  • 400GB SATA2 5400rpm 2.5":5 V
  • DC290 internal hard drive:5 / 12 V