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Rectangular 2.5 inch black metal SSD with label and SATA connectors

SAMSUNG

SAMSUNG 870 QVO MZ-77Q4T0BW 4TB 2.5" SATA internal SSD

SKU CH-NMTV-3XSMP

A 2.5" SATA internal SSD with 4TB capacity, Samsung V-NAND 4bit MLC memory, up to 560 MBps read and 530 MBps write speeds, and a 4 GB DDR4 cache

  • Total capacity4 TB
  • 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)
  • 4TB capacity stores large media libraries and game collections
  • Sequential read up to 560 MBps and write up to 530 MBps for fast boot and app launch
  • Samsung V-NAND 4bit MLC with MKX controller delivers up to 98,000 random read IOPS
  • 1,500,000 hour MTBF and 1500G shock resistance protect data in daily use
  • 4 GB Low Power DDR4 cache and Intelligent TurboWrite sustain write performance over time

4TB SATA III SSD for everyday PCs

The Samsung 870 QVO MZ-77Q4T0BW is a 2.5-inch internal solid-state drive built for consumer desktops and laptops. It uses Samsung V-NAND 4bit MLC memory and a Samsung MKX controller to deliver 4TB of storage over a SATA III interface. The drive includes a 4GB Low Power DDR4 SDRAM cache to help sustain performance during typical workloads.

SATA III interface limits sequential speed

Sequential reads reach up to 560 MBps and writes up to 530 MBps, matching the practical ceiling of the SATA III bus. Random 4KB performance is rated at up to 98,000 IOPS read and 88,000 IOPS write. Intelligent TurboWrite uses a larger variable buffer to maintain write speeds over extended transfers. Power draw is 35 mW idle and 3.2 W active, with an operating range of 0°C to 70°C.

1.5 million-hour MTBF for long-term use

The drive carries a mean-time-between-failures rating of 1,500,000 hours and a shock resistance of 1500G. These figures indicate the endurance expected for a high-capacity QLC drive in daily consumer use. The combination of capacity, SATA compatibility and rated reliability makes it a straightforward upgrade for systems limited to the 2.5-inch SATA form factor.

How it compares

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

Price $661.99
Pricier than about 84% of the 1,994 comparable items (median $180.49).
Total capacity 4 TB
Higher than about 90% 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 $165.50 per TB
Typical for this category: the median of 1,362 items is $165.50 per TB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSAMSUNG
Product line870 QVO Series
Model nameMZ-77Q4T0BW
Total capacity4 TB
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)Up to 98,000 IOPS
Random write (4K)Up to 88,000 IOPS
Storage
NAND flash typeSamsung V-NAND 4bit MLC
Controller chipSamsung MKX Controller
Cache memorySamsung 4 GB Low Power DDR4 SDRAM
Ports & slots
Interface typeSATA III
Power
Idle power draw35 mW
Active power draw3.2 W
Size & build
Form factor2.5 in (6.35 cm)
Overall height6.8 mm
Overall width100 mm
Product depth69.85 mm
Product weight54g
Environment & compliance
Operating temperature range0 °C to 70 °C
Max shock tolerance1500G
More details
Mean time between failures1,500,000 h

Questions about this item

Should I choose the 4 TB model or look at the smaller capacities in the 870 QVO line?

The 4 TB version gives you the largest single-drive capacity available in this SATA series while keeping the same 560 MB/s read and 530 MB/s write limits, so you only need one bay for a full media library.

What does the 560 MB/s sequential read figure actually deliver once the drive is installed?

It means the drive saturates the SATA III bus, so boot times, game loads and large file copies run at the interface ceiling rather than being bottlenecked by the SSD itself.

How does the SATA III interface limit real-world performance of this drive?

The SATA III link caps both sequential and sustained random throughput at the 560/530 MB/s ceiling, so the MKX controller and 4 GB DDR4 cache cannot push speeds beyond that boundary.

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