Dell JMN63 internal hard drive vs Dell P7J74 internal hard drive

Key differences

The Dell JMN63 internal hard drive has 1,800 RPM more HDD speed than the Dell P7J74 internal hard drive (7200 RPM vs 5400 RPM). The Dell JMN63 internal hard drive has 1" more HDD size than the Dell P7J74 internal hard drive (3.5" vs 2.5"). The Dell JMN63 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: 3 TB on the Dell JMN63 internal hard drive, 640 GB on the Dell P7J74 internal hard drive. Interface: Serial ATA III on the Dell JMN63 internal hard drive, Serial ATA II on the Dell P7J74 internal hard drive.

• HDD capacity
  • JMN63 internal hard drive:3 TB
  • P7J74 internal hard drive:640 GB
• HDD speed
  • JMN63 internal hard drive:7200 RPM
  • P7J74 internal hard drive:5400 RPM
• HDD size
  • JMN63 internal hard drive:3.5"
  • P7J74 internal hard drive:2.5"
• Interface
  • JMN63 internal hard drive:Serial ATA III
  • P7J74 internal hard drive:Serial ATA II
• HDD interface transfer rate
  • JMN63 internal hard drive:6 Gbit/s
  • P7J74 internal hard drive:3 Gbit/s