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GIGABYTE Gen4 4000E SSD 250GB (G440E250G) is an M.2 NVMe solid-state drive that uses the PCIe 4.0 x4 interface, offering sequential read speeds up to 3,500 MB/s and write speeds up to 1,800 MB/s. It is designed to boost PC performance with faster operating system and application load time
 

• • Form Factor: M.2 2280
  • Interface: PCI-Express 4.0 x4, NVMe 1.4
  • Total Capacity: 250 GB
  • Controller: Phison PS5021-E21T
  • NAND Flash: 176-layer TLC NAND by SK Hynix
  • Sequential Read Speed: Up to 3,500 MB/s
  • Sequential Write Speed: Up to 1,800 MB/s
  • Endurance (TBW): 150 Terabytes Written
  • Mean Time Between Failures (MTBF): 1.5 million hours
  • Warranty: 3 years limited warranty
  • Features: HMB (Host Memory Buffer) supported, TRIM & S.M.A.R.T support, Energy-Efficient design. 

GIGABYTE Gen4 4000E SSD 500GB (model number G440E500G) is an internal PCIe 4.0 x4 NVMe 1.4 solid-state drive with sequential read speeds of up to 3,600 MB/s and sequential write speeds of up to 3,000 MB/s.

• Interface: PCI Express 4.0 x4, NVMe 1.4
• Form Factor: M.2 2280
• Total Capacity: 500GB
• Sequential Read Speed: Up to 3,600 MB/s
• Sequential Write Speed: Up to 3,000 MB/s
• Controller: Phison PS5021-E21T
• NAND Flash: 176-layer TLC NAND flash by SK Hynix
• External DDR Cache: N/A (uses Host Memory Buffer (HMB) technology instead)
• Endurance (TBW): 300 TBW (Terabytes Written)
• Mean Time Between Failure (MTBF): 1.5 million hours
• Warranty: Limited 3 years or 300TBW, whichever comes first 

GIGABYTE Gen4 4000E SSD 1TB is an internal M.2 NVMe solid-state drive that offers fast performance for gaming, content creation, and general computing tasks, utilizing a PCIe 4.0 interface. It has sequential read speeds up to 4,000 MB/s and write speeds up to 3,900 MB/s

• Interface: PCI Express 4.0 x4, NVMe 1.4
• Form Factor: M.2 2280
• Total Capacity: 1000GB (1TB)
• Sequential Read Speed: Up to 4,000 MB/s
• Sequential Write Speed: Up to 3,900 MB/s
• Controller: Phison PS5021-E21T
• NAND Flash: 176-layer TLC NAND by SK Hynix
• External DDR Cache: Not applicable; uses Host Memory Buffer (HMB) technology instead
• Endurance (TBW): 320 Terabytes Written
• Mean Time Between Failure (MTBF): 1.5 million hours
• Warranty: Limited 3 years or by TBW, whichever comes first