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Black M.2 2280 NVMe SSD circuit board with gold edge connector and black controller chip

SAMSUNG

SAMSUNG 990 PRO MZ-V9P4T0BW 4 TB internal SSD

SKU CH-EFN9-71GRJ MPN MZ-V9P4T0BW

4 TB M.2 2280 PCIe 4.0 NVMe SSD delivers up to 7450 MB/s reads and 6900 MB/s writes with 4 GB DRAM cache and 256-bit AES encryption

  • Total capacity4 TB
  • Sequential read speedUp to 7,450 MB/s
  • Sequential write speedUp to 6,900 MB/s
  • Interface typePCI-Express 4.0 x4
  • Form factorM.2 2280
  • Product typeInternal Solid State Drive (SSD)
  • 4 TB capacity stores large media libraries and game collections
  • 7450 MB/s sequential read speeds cut load times for apps and games
  • 6900 MB/s sequential write speeds accelerate file transfers and content creation
  • PCIe 4.0 x4 NVMe interface delivers high bandwidth for demanding workflows
  • 256-bit AES encryption protects data from unauthorized access

4 TB PCIe 4.0 NVMe Drive

The Samsung 990 PRO MZ-V9P4T0BW is a 4 TB internal solid-state drive built for consumer workloads that demand high throughput. It uses a PCI-Express 4.0 x4 interface and V-NAND MLC memory with a 4 GB DRAM cache. Sequential reads reach up to 7450 MBps and writes up to 6900 MBps. The M.2 2280 form factor fits standard desktop and laptop slots.

256-bit AES and 2400 TBW endurance

Hardware-based 256-bit AES encryption protects stored data without software overhead. The drive is rated for 2400 TB of total bytes written, giving a measurable lifespan indicator for heavy write workloads. No heatsink is included, so thermal management depends on the host platform. Power-efficient operation helps maintain consistent performance during sustained transfers.

M.2 2280 dimensions and weight

The module measures 4.000 mm in height, 5.800 mm in width and weighs 0.1764 kg, matching the standard M.2 2280 footprint. This allows direct installation in compatible motherboards and laptops without adapters. The single-sided design simplifies mounting in tight spaces. Connector placement follows the PCIe 4.0 x4 pinout for full bandwidth utilisation.

How it compares

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

Price $947.99
Pricier than about 90% 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 7,450 MB/s
Higher than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $237.00 per TB
Pricier than about 68% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSAMSUNG
Product line990 PRO
Model nameMZ-V9P4T0BW
Part numberMZ-V9P4T0BW
Total capacity4 TB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 7,450 MB/s
Sequential write speedUp to 6,900 MB/s
Storage
NAND flash typeV-NAND MLC
Cache memory4 GB DRAM
Ports & slots
Interface typePCI-Express 4.0 x4
Size & build
Form factorM.2 2280
Heat sinkWithout HeatSink
Shipping weight0.23 kg
Package size79 × 20 × 2 mm

Questions about this item

How long will the 4 TB 990 PRO last before the V-NAND MLC cells wear out?

The drive is rated for 2400 TBW, so you can write roughly 2.4 petabytes of data before the endurance limit is reached.

What is the first performance limit you hit during sustained heavy writes?

Sequential write speed tops out at 6900 MBps, so that ceiling appears before any other bottleneck.

Does the drive run hot or loud when it operates all day without a heatsink?

It has no moving parts and no fan, so it stays silent; sustained loads will raise its temperature, but the controller throttles to stay within safe thermal limits.

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