Dell P7J74 internal hard drive vs Dell PGD3Y internal hard drive

Key differences

The Dell PGD3Y internal hard drive has 1,800 RPM more HDD speed than the Dell P7J74 internal hard drive (7200 RPM vs 5400 RPM). The Dell PGD3Y internal hard drive has 1" more HDD size than the Dell P7J74 internal hard drive (3.5" vs 2.5"). The Dell PGD3Y internal hard drive has 3 Gbit/s more HDD interface transfer rate than the Dell P7J74 internal hard drive (6 Gbit/s vs 3 Gbit/s). HDD capacity: 640 GB on the Dell P7J74 internal hard drive, 1 TB on the Dell PGD3Y internal hard drive. Interface: Serial ATA II on the Dell P7J74 internal hard drive, Serial ATA III on the Dell PGD3Y internal hard drive.

• HDD capacity
  • P7J74 internal hard drive:640 GB
  • PGD3Y internal hard drive:1 TB
• HDD speed
  • P7J74 internal hard drive:5400 RPM
  • PGD3Y internal hard drive:7200 RPM
• HDD size
  • P7J74 internal hard drive:2.5"
  • PGD3Y internal hard drive:3.5"
• Interface
  • P7J74 internal hard drive:Serial ATA II
  • PGD3Y internal hard drive:Serial ATA III
• HDD interface transfer rate
  • P7J74 internal hard drive:3 Gbit/s
  • PGD3Y internal hard drive:6 Gbit/s