Samsung 870 EVO 4TB SATA SSD 2.5" (MZ-77E4T0BW)

The Reliable All-Star SATA SSD

The Samsung 870 EVO 4TB (MZ-77E4T0BW) is the definitive choice for those seeking massive internal storage combined with the reliability of Samsung’s world-renowned EVO line. Built with the latest 6th-generation V-NAND technology and the powerful MKX controller, this 2.5-inch drive maximizes the SATA interface to its absolute limit. It is engineered for a wide range of users—from casual laptop owners looking for a massive storage boost to creative professionals needing a stable drive for heavy 8K video processing and multitasking.

Consistent Performance and Intelligence

Equipped with Intelligent TurboWrite technology, the 870 EVO uses a large variable buffer to maintain peak write speeds and accelerate overall performance. It delivers sequential read speeds of up to 560 MB/s and write speeds of up to 530 MB/s, providing a significantly more responsive experience than traditional hard drives. Furthermore, this drive offers a 38% improvement in random read speeds over its predecessor, the 860 EVO, ensuring that your system boots faster and applications load with minimal delay.

Industry-Leading Endurance and Compatibility

Samsung has designed the 870 EVO 4TB for long-term peace of mind, backing it with an industry-leading endurance rating of 2,400 TBW (Total Bytes Written). It has undergone extensive compatibility testing with major host systems, including motherboards, chipsets, and NAS devices. Management is made simple with the Samsung Magician software, which allows you to monitor drive health, optimize performance, and protect your data with AES 256-bit hardware encryption.

Key Specifications

• Model Code: MZ-77E4T0BW

• Capacity: 4TB (4,000 GB)

• Form Factor: 2.5-inch (7mm slim design)

• Interface: SATA 6 Gb/s (compatible with SATA 3 Gb/s & 1.5 Gb/s)

• Sequential Read: Up to 560 MB/s

• Sequential Write: Up to 530 MB/s

• Random Read (4KB, QD32): Up to 98,000 IOPS

• Random Write (4KB, QD32): Up to 88,000 IOPS

• Controller: Samsung MKX Controller

• Storage Memory: Samsung V-NAND 3bit MLC (TLC)

• Cache Memory: 4GB Low Power DDR4 SDRAM

• Endurance (TBW): 2,400 Terabytes Written

• Reliability (MTBF): 1.5 Million Hours

• Warranty: 5-Year Limited Warranty or 2,400 TBW (whichever comes first)

• Security: AES 256-bit Encryption (Class 0), TCG/Opal, IEEE1667