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Rectangular 2.5 inch silver metal SSD with label showing 860 PRO 256GB

SAMSUNG

SAMSUNG MZ-76P256E 860 PRO 256GB 2.5" SATA internal SSD

SKU CH-5JX5-8STCS MPN MZ-76P256E

A 2.5 inch SATA internal SSD with 256GB capacity, V-NAND 2-bit MLC memory, 512MB LPDDR4 cache, sequential reads up to 560 MBps, writes up to 530 MBps, and 1.5 million hour MTBF

  • Total capacity256 GB
  • Sequential read speedUp to 560 MB/s
  • Sequential write speedUp to 530 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Up to 560 MB/s sequential read speed
  • Up to 530 MB/s sequential write speed
  • 1,500,000 hours MTBF endurance rating
  • 64-layer V-NAND 2-bit MLC technology
  • AES-256-bit hardware encryption built in

Capacity and purpose

The Samsung 860 PRO MZ-76P256E is a 256GB 2.5" internal SSD built for high-end PCs, workstations and NAS units. It uses V-NAND 2-bit MLC memory and a Samsung MJX controller to deliver sustained performance for heavy workloads such as 4K video storage and 3D data rendering.

SATA III limits

The drive connects through a SATA III interface with a 600 MBps bus ceiling, so sequential reads top out at 560 MBps and writes at 530 MBps. Random 4KB performance reaches 100,000 IOPS read and 90,000 IOPS write at QD32, while QD1 figures sit at 11,000 IOPS read and 43,000 IOPS write.

Endurance rating

A 1,500,000-hour MTBF and V-NAND 64-layer construction give the drive the endurance needed for continuous high-intensity use. AES-256 hardware encryption and Samsung Magician software support are included for data security and management.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $79.99
Cheaper than about 79% of the 1,994 comparable items (median $180.49).
Total capacity 256 GB
Lower than about 80% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 560 MB/s
Lower than about 60% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $312.46 per TB
Pricier than about 77% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSAMSUNG
Product line860 Pro Series
Model nameMZ-76P256E
Total capacity256 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 560 MB/s
Sequential write speedUp to 530 MB/s
Random read (4K)Random (QD1): Up to 11,000 IOPS
Random (QD32): Up to 100,000 IOPS
Random write (4K)Random (QD1): Up to 43,000 IOPS
Random (QD32): Up to 90,000 IOPS
Storage
NAND flash typeV-NAND 2-bit MLC
Controller chipSamsung MJX
Cache memory512 MB LPDDR4
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100 mm
Product weight86.18g
Shipping weight0.09 kg
Package size142 × 97 × 23 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Max shock tolerance1,500G & 0.5 ms (Half sine)
More details
Mean time between failures1,500,000 h

Questions about this item

Should I choose the 256 GB capacity or a larger 860 PRO model?

The 256 GB version provides up to 560 MB/s sequential read and 530 MB/s write with a 512 MB LPDDR4 cache, while higher capacities in the same series can reach up to 90,000 random write IOPS at QD32 compared to 43,000 IOPS here.

What do the 560 MB/s read and 530 MB/s write speeds mean once the drive is installed in my PC?

Those are maximum sequential rates over the SATA 600 interface; real-world throughput will be slightly lower due to protocol overhead and system configuration, but large file transfers will still approach the SATA link limit.

Is the SATA III interface fast enough for this drive, or does it cap performance?

SATA III tops out at 600 MB/s, so the drive's 560 MB/s read and 530 MB/s write speeds run near the interface ceiling; the bottleneck is the SATA link itself, not the controller or V-NAND.

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