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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

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form Factor2.5"
  • Capacity256GB
  • Memory ComponentsV-NAND 2-bit MLC
  • InterfaceSATA III
  • 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.

Highlights

  • 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

Specifications

BrandSAMSUNG
Series860 Pro Series
ModelMZ-76P256E
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form Factor2.5"
Capacity256GB
Memory ComponentsV-NAND 2-bit MLC
InterfaceSATA III
ControllerSamsung MJX
Cache512MB LPDDR4
Max Sequential ReadUp to 560 MBps
Max Sequential WriteUp to 530 MBps
4KB Random ReadRandom (QD1): Up to 11,000 IOPS
Random (QD32): Up to 100,000 IOPS
4KB Random WriteRandom (QD1): Up to 43,000 IOPS
Random (QD32): Up to 90,000 IOPS
MTBF1,500,000 hours
FeaturesSamsung V-NAND Technology
Samsung's V-NAND flash memory helps to overcome the limitations of conventional planar NAND architecture. It stacks 64 cell layers vertically over one another rather than trying to fit itself onto a fixed horizontal space, in order to provide high density and performance with a small footprint.
Fast Read/Write Performance
The 860 PRO performs at sequential write speeds up to 530 MB/s and sequential read speeds up to 560 MB/s with a robust a robust algorithm-based Samsung MJX controller (up to 1 GHz).
Relentless Endurance
With an industry warranty offering up
Operating Temperature0°C ~ +70°C
Max Shock Resistance1,500G & 0.5 ms (Half sine)
Height7.00mm
Width69.85mm
Depth100.00mm
Weight86.18g
Shipping weight0.09 kg
Package size142 × 97 × 23 mm

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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