Seagate 250GB 3.5" Ultra ATA/100 vs Seagate 300GB 3.5" SATA II

Key differences

The Seagate 300GB 3.5" SATA II has 50 GB more HDD capacity than the Seagate 250GB 3.5" Ultra ATA/100 (300 GB vs 250 GB). The Seagate 300GB 3.5" SATA II has 8 MB more storage drive buffer size than the Seagate 250GB 3.5" Ultra ATA/100 (16 MB vs 8 MB). The Seagate 250GB 3.5" Ultra ATA/100 has 3 ms more read seek time than the Seagate 300GB 3.5" SATA II (11 ms vs 8 ms). Interface: Ultra-ATA/100 on the Seagate 250GB 3.5" Ultra ATA/100, Serial ATA II on the Seagate 300GB 3.5" SATA II.

• HDD capacity
  • 250GB 3.5" Ultra ATA/100:250 GB
  • 300GB 3.5" SATA II:300 GB
• Interface
  • 250GB 3.5" Ultra ATA/100:Ultra-ATA/100
  • 300GB 3.5" SATA II:Serial ATA II
• Storage drive buffer size
  • 250GB 3.5" Ultra ATA/100:8 MB
  • 300GB 3.5" SATA II:16 MB
• Read seek time
  • 250GB 3.5" Ultra ATA/100:11 ms
  • 300GB 3.5" SATA II:8 ms
• Write seek time
  • 250GB 3.5" Ultra ATA/100:12 ms
  • 300GB 3.5" SATA II:9 ms
• Non-operating shock
  • 250GB 3.5" Ultra ATA/100:350 G
  • 300GB 3.5" SATA II:300 G
• Weight
  • 250GB 3.5" Ultra ATA/100:580 g
  • 300GB 3.5" SATA II:655 g