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Samsung SSD 990 PRO 4TB, PCIe 4.0 M.2 2280, Up to 7,450 MB/s | NVMe Internal Solid State Hard Drive for High End Computing, Gaming, and Heavy Duty Workstations (MZ-V9P4T0B/AM)
Samsung

Samsung SSD 990 PRO 4TB

Bottom line: The Samsung SSD 990 PRO 4TB ($799.90 on Amazon as of 2026-10-31 04:20 UTC): 7,450 MB/s read and 6,900 MB/s write, near the PCIe 4.0 ceiling; main trade-off: PCIe 4.0, not Gen5 - no headroom on newer boards.

$799.90 on Amazon, checked (price may vary)

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-31. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 7,450 MB/s read and 6,900 MB/s write, near the PCIe 4.0 ceiling
  • ✓ 55%+ better random performance than the 980 PRO
  • ✓ Up to 50% better performance per watt vs the 980 PRO
  • ✓ 4TB in a single M.2 2280 slot, no drive shuffling

Cons

  • ✗ PCIe 4.0, not Gen5 - no headroom on newer boards
  • ✗ Bare M.2 2280 only; no heatsink version in this SKU
  • ✗ Peak write speeds depend on Intelligent TurboWrite cache
  • ✗ Premium pricing versus DRAM-less Gen4 4TB drives

Manufacturer description

The Samsung 990 PRO 4TB is a PCIe 4.0 M.2 2280 NVMe drive built for people who fill a drive fast and then ask it to keep up. Sequential reads reach 7,450 MB/s and writes hit 6,900 MB/s, which lands it near the practical ceiling of the PCIe 4.0 interface. Samsung's own figures put random performance more than 55% ahead of the 980 PRO, so the gains show up where they matter for game level loading, project file scrubbing, and large data sets rather than only in benchmark sequential runs. The in-house controller pairs that speed with smart heat control, delivering up to 50% better performance…

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SpecPicks Verdict

SpecPicks scored Samsung SSD 990 PRO 4TB using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Samsung's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How fast is the Samsung 990 PRO 4TB?

Samsung rates it at up to 7,450 MB/s sequential read and 6,900 MB/s sequential write, close to the practical limit of the PCIe 4.0 interface.

Will it work in a PCIe 5.0 motherboard?

It is an M.2 2280 NVMe drive, so it fits standard M.2 slots and runs at PCIe 4.0 speeds. Gen5 slots are backward compatible, but you will not exceed the drive's 7,450 MB/s rating.

Is it worth upgrading from a 980 PRO?

Samsung cites more than 55% better random performance and up to 50% better performance per watt over the 980 PRO, so the gain is largest in random-heavy workloads and power-limited builds.

Does this model include a heatsink?

This SKU (MZ-V9P4T0B/AM) is the bare M.2 2280 drive. Samsung sells a separate heatsink version; check the listing you are buying to confirm which variant it is.

Key Features

  • MEET THE NEXT GEN: Consider this a cheat code; Our Samsung 990 PRO Gen4 SSD helps you reach near max performance* with lightning-fast speeds; Whether you’re a hardcore gamer or a tech guru, you’ll get power efficiency built for the final boss
  • REACH THE NEXT LEVEL: Gen4 steps up with faster transfer speeds and high-performance bandwidth; With a more than 55% improvement in random performance compared to 980 PRO, it’s here for heavy computing and faster loading
  • THE FASTEST SSD FROM THE WORLD'S #1 FLASH MEMORY BRAND**: The speed you need for any occasion; With read and write speeds up to 7450/6900 MB/s* you’ll reach near max performance of PCIe 4.0*** powering through for any use
  • PLAY WITHOUT LIMITS: Give yourself some space with storage capacities from 1TB to 4TB; Sync all your saves and reign supreme in gaming, video editing, data analysis and more
  • IT’S A POWER MOVE: Save the power for your performance; Get power efficiency all while experiencing up to 50% improved performance per watt over the 980 PRO****; It makes every move more effective with less consumption

Full Specifications

BrandSamsung
ColorBlack
Model Name990 PRO
Read Speed7450 megabytes_per_second
Form FactorM.2 (2280)
Media Speed6900
Model NumberMZ-V9P4T0B/AM
Built-In MediaUSB C Cable
Item Type Nameinternal hard drives
Hard-Drive Size4 TB
Mfr Part NumberMZ-V9P4T0B/AM
Number of Items1
Special FeatureAES 256-bit hardware encryption, IP65 Rated, PCIe NVMe Technology, Read/write speeds of up to 1,050/1,000 MB/s, Rugged durability enduring up to 9.8 ft drop
Hardware PlatformPC
Installation TypeInternal Solid State Drive (SSD)
Compatible DevicesDesktop, Laptop
Data Transfer Rate7450 megabytes_per_second
Enclosure MaterialInformation Not Available
Additional FeaturesAES 256-bit hardware encryption, IP65 Rated, PCIe NVMe Technology, Read/write speeds of up to 1,050/1,000 MB/s, Rugged durability enduring up to 9.8 ft drop
Hard Disk InterfaceSolid State
Full listing titleSamsung SSD 990 PRO 4TB, PCIe 4.0 M.2 2280, Up to 7,450 MB/s | NVMe Internal Solid State Hard Drive for High End Computing, Gaming, and Heavy Duty Workstations (MZ-V9P4T0B/AM)

Hardware benchmark data

Ready to buy?

Samsung SSD 990 PRO 4TB, PCIe 4.0 M.2 2280, Up to 7,450 MB/s | NVMe Internal Solid State Hard Drive for High End Computing, Gaming, and Heavy Duty Workstations (MZ-V9P4T0B/AM) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $799.90

*Price sourced from Amazon.com. Last updated 2026-10-31. Price and availability subject to change.

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Samsung SSD 990 PRO 4TB, PCIe 4.0 M.2 2280, Up to 7,450 MB/s | NVMe Internal Solid State Hard Drive for High End Computing, Gaming, and Heavy Duty Workstations (MZ-V9P4T0B/AM)
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