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Samsung 990 EVO Plus SSD 4TB, PCIe Gen 4x4 | Gen 5x2 M.2, Speeds Up-to 7,250 MB/s, Upgrade Storage for PC/Laptops, HMB Technology and Intelligent Turbowrite 2.0, (MZ-V9S4T0B/AM)
Samsung

Samsung 990 EVO Plus SSD 4TB

Bottom line: The Samsung 990 EVO Plus SSD 4TB ($669.99 on Amazon as of 2026-10-21 20:20 UTC): 7,250 MB/s read and 6,300 MB/s write on PCIe 4.0 x4; main trade-off: nickel controller cuts power draw, not a substitute for a heatsink.

$669.99

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Buy on Amazon — $669.99 Compare to similar ssds & storage

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 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 7,250 MB/s read and 6,300 MB/s write on PCIe 4.0 x4
  • ✓ Runs PCIe 5.0 x2, so it works in lane-split laptop slots
  • ✓ 4TB in a single M.2 slot holds a full game library
  • ✓ TurboWrite 2.0 sustains speed on large file writes

Cons

  • ✗ Nickel controller cuts power draw, not a substitute for a heatsink
  • ✗ Gen 5 x2 caps out below true PCIe 5.0 x4 drives
  • ✗ 4TB tier carries a steep price versus 1TB and 2TB models
  • ✗ Magician software is Windows-focused; less useful on Linux or PS5

Manufacturer description

The Samsung 990 EVO Plus 4TB is a flexible-interface NVMe drive that runs at PCIe 4.0 x4 or PCIe 5.0 x2, so it slots into modern desktops and laptops that split lanes without giving up bandwidth. Sequential speeds reach 7,250 MB/s read and 6,300 MB/s write, which shortens the wait when you are moving multi-gigabyte game installs, 4K project files, or model weights between drives. Intelligent TurboWrite 2.0 is tuned for sustained large-file writes at this 4TB capacity, so long transfers hold speed longer instead of collapsing into a slow post-cache state. Samsung's nickel-coated controller…

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SpecPicks Verdict

SpecPicks scored Samsung 990 EVO Plus SSD 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

Will the 990 EVO Plus work in a PCIe 5.0 slot?

Yes. It supports PCIe 4.0 x4 and PCIe 5.0 x2, so it negotiates either interface. On a Gen 5 x2 link you still get up to 7,250 MB/s sequential read.

How fast is the Samsung 990 EVO Plus 4TB?

Up to 7,250 MB/s sequential read and 6,300 MB/s sequential write. Samsung measured those figures with Intelligent TurboWrite 2.0 active on a Ryzen 9 7950X system running Windows 11 Pro.

Does it need a heatsink?

This model ships bare with a nickel-coated controller designed to draw less power at comparable performance. Many desktop motherboards include an M.2 heatsink; check your board's manual before installing.

Is 4TB enough for a large game library?

4TB is the top capacity in the 990 EVO Plus line and comfortably holds dozens of modern 100GB-plus installs alongside media files, without adding a second drive.

What software do I need to manage the drive?

Samsung Magician handles firmware updates, encryption settings, and drive-health monitoring. It is a Samsung desktop utility, so plan on a Windows PC for firmware maintenance.

Key Features

  • GROUNDBREAKING READ/WRITE SPEEDS: The 990 EVO Plus features the latest NAND memory, boosting sequential read/write speeds up to 7,250/6,300MB/s. Ideal for huge file transfers and finishing tasks faster than ever.
  • LARGE STORAGE CAPACITY: Harness the full power of your drive with Intelligent TurboWrite2.0's enhanced large-file performance—now available in a 4TB capacity.
  • EXCEPTIONAL THERMAL CONTROL: Keep your cool as you work—or play—without worrying about overheating or battery life. The efficiency-boosting nickel-coated controller allows the 990 EVO Plus to utilize less power while achieving similar performance.
  • OPTIMIZED PERFORMANCE: Optimized to support the latest technology for SSDs—990 EVO Plus is compatible with PCIe 4.0 x4 and PCIe 5.0 x2. This means you get more bandwidth and higher data processing and performance.
  • NEVER MISS AN UPDATE: Your 990 EVO Plus SSD performs like new with the always up-to-date Magician Software. Stay up to speed with the latest firmware updates, extra encryption, and continual monitoring of your drive health–it works like a charm.

Full Specifications

BrandSamsung
ColorBlack
Model Name990 EVO Plus
Read Speed7250 Megabytes Per Second
Unit Count1.0 Count
Form FactorM2
Media Speed6300
Model NumberMZ-V9S4T0B/AM
CompatibilityPC
Built-In MediaInternal SSD
Hard-Drive Size4 TB
Mfr Part NumberMZ-V9S4T0B/AM
Number of Items1
Special FeatureBackward Compatible
Installation TypeInternal Hard Drive
Compatible DevicesDesktop, Laptop
Data Transfer Rate7250 Megabits Per Second
Enclosure MaterialNand
Additional FeaturesBackward Compatible
Hard Disk InterfacePCIE x 4
Full listing titleSamsung 990 EVO Plus SSD 4TB, PCIe Gen 4x4 | Gen 5x2 M.2, Speeds Up-to 7,250 MB/s, Upgrade Storage for PC/Laptops, HMB Technology and Intelligent Turbowrite 2.0, (MZ-V9S4T0B/AM)

Ready to buy?

Samsung 990 EVO Plus SSD 4TB, PCIe Gen 4x4 | Gen 5x2 M.2, Speeds Up-to 7,250 MB/s, Upgrade Storage for PC/Laptops, HMB Technology and Intelligent Turbowrite 2.0, (MZ-V9S4T0B/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 — $669.99

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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Samsung 990 EVO Plus SSD 4TB, PCIe Gen 4x4 | Gen 5x2 M.2, Speeds Up-to 7,250 MB/s, Upgrade Storage for PC/Laptops, HMB Technology and Intelligent Turbowrite 2.0, (MZ-V9S4T0B/AM)
$669.99
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