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Black rectangular 2.5 inch SATA SSD with silver label

SAMSUNG

SAMSUNG 870 EVO MZ-77E4T0B/AM 4TB 2.5" SATA internal SSD

SKU CH-JKTD-R79ZW MPN MZ-77E4T0B/AM

A 4 TB 2.5" SATA internal SSD with V-NAND memory, 560 MB/s read, 530 MB/s write and 2,400 TBW endurance

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form Factor2.5"
  • Capacity4TB
  • Memory ComponentsV-NAND
  • InterfaceSATA III
  • Sustains heavy workloads with up to 2400 TBW endurance
  • Sequential reads reach 560 MBps for fast file access
  • Sequential writes hit 530 MBps to keep projects moving
  • AES 256 hardware encryption protects data at rest
  • 5 million hour MTBF signals long-term reliability

Capacity and audience

This Samsung 870 EVO is a 4TB 2.5-inch internal SSD built for consumer PCs and notebooks. It uses V-NAND memory and a 4GB Low Power DDR4 cache to deliver sequential reads up to 560 MBps and writes up to 530 MBps. The drive is rated for 2400TB written and a 1,500,000-hour MTBF.

SATA interface limits

The drive connects over SATA III, which caps sequential throughput at the quoted 560/530 MBps regardless of workload. AES 256 encryption follows TCG/Opal v2.0 and MS eDrive IEEE1667 standards. Performance scales with the host controller but cannot exceed the SATA bus ceiling.

Compatibility checklist

Verify your system has a free 2.5-inch bay with 7.00mm height clearance and a SATA data plus power connection. Confirm the motherboard or RAID controller supports SATA III for full speed. Ensure the BIOS or OS can address a 4TB volume without legacy limits.

Highlights

  • Sustains heavy workloads with up to 2400 TBW endurance
  • Sequential reads reach 560 MBps for fast file access
  • Sequential writes hit 530 MBps to keep projects moving
  • AES 256 hardware encryption protects data at rest
  • 5 million hour MTBF signals long-term reliability

Specifications

BrandSAMSUNG
Series870 EVO Series
ModelMZ-77E4T0B/AM
Part NumberMZ-77E4T0B/AM
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form Factor2.5"
Capacity4TB
Memory ComponentsV-NAND
InterfaceSATA III
ProtocolSATA
CacheSamsung 4GB Low Power DDR4 SDRAM
EncryptionClass 0 (AES 256) TCG/Opal v2.0, MS eDrive (IEEE1667)
Max Sequential ReadUp to 560 MBps
Max Sequential WriteUp to 530 MBps
Terabytes Written (TBW)2400TB
MTBF1,500,000 hours
FeaturesTHE SSD ALL-STAR - The latest 870 EVO has indisputable performance, reliability and compatibility built upon Samsung's pioneering technology.
EXCELLENCE IN PERFORMANCE - Enjoy professional-level SSD performance with 870 EVO, which maximizes the SATA interface limit to 560/530 MB/s sequential speeds, accelerates write speeds and maintains long-term high performance with a larger variable buffer.
INDUSTRY-DEFINING RELIABILITY - Meet the demands of every task - from everyday computing to 8K video processing, with up to 2,400 TBW.
MORE COMPATIBLE THAN EVER - 870 EVO has been compatibilit
Height7.00mm
Width70.00mm
Depth100.00mm
Shipping weight0.09 kg
Package size142 × 98 × 19 mm

Questions about this item

Which capacity of the 870 EVO series should I choose for heavy workloads?

The 4TB model provides 2,400 TBW endurance and a 1,500,000-hour MTBF, making it suitable for sustained write-intensive tasks such as 8K video processing.

What do the 560 MBps read and 530 MBps write figures mean once the drive is installed?

Those are the maximum sequential speeds the SATA III interface allows; real-world throughput will sit at or just below those numbers during large file transfers.

How does the SATA III interface limit performance in practice?

The SATA III link caps sequential transfers at 560/530 MBps, so the drive cannot exceed those speeds regardless of the V-NAND or 4GB DDR4 cache capabilities.

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