Quick Answer
Samsung SSD 9100 PRO 4TB, PCIe 5.0x4 M.2 2280, Seq. Read Spe

The Samsung SSD 9100 PRO 4TB, PCIe 5.0x4 M.2 2280, Seq. Read Speeds Up to 14 is our top pick for 4TB NVMe SSDs. It offers excellent performance for 4TB NVMe SSDs. For budget shoppers, the Samsung T7 Portable SSD 4TB offers solid value at a lower price.

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At a Glance

#ProductAwardPriceColorModel NameRead SpeedOur Score
1 Best Overall $799 9.5 Buy →
2 Best Gen4 Value $679 9.0 Buy →
3 Best Pro Workload $899 8.8 Buy →
4 Best Hybrid $669 8.5 Buy →
5 Best Portable $669 Titan Gray T7 1050 Megabytes Per Second 8.5 Buy →

4TB NVMe SSDs Buying Guide

4TB NVMe SSDs are the right choice for users with serious content libraries: 50+ AAA games, large 4K/8K video projects, AI model collections (Stable Diffusion checkpoints alone consume 100+ GB), or backup-locality requirements. The price gap between 2TB and 4TB has narrowed — most 4TB drives sit at 1.6-2× the 2TB price, making the upgrade economically viable for users with the storage need.

4TB Gen5 vs 4TB Gen4 — Pricing Reality

Gen5 4TB drives launch around $800 (Samsung 9100 PRO, Crucial T710 4TB). Gen4 4TB drives sit at $679-899 (Samsung 990 PRO, WD_Black SN850X, Crucial T700). The Gen4 to Gen5 price gap is smaller at 4TB than at 2TB — the bottleneck shifts from controller cost to NAND density. For users buying 4TB specifically for capacity rather than speed, a Gen4 drive at $679-899 is often the more sensible buy.

Samsung 990 PRO 4TB at $899

The 990 PRO 4TB sits at the top of Gen4 performance with 7,450 MB/s sequential reads. It's $100 more expensive than the Samsung 9100 PRO Gen5 at $799 — a strange pricing anomaly that has held since the 9100's launch. The 9100 PRO is the better buy of the two unless you specifically need the 990 PRO's slightly higher random IOPS for database workloads. For typical gaming and creator workloads, 9100 PRO 4TB at $799 is the value play.

Samsung SSD 9100 PRO 4TB, PCIe 5.0x4 M.2 2280, Seq. Read Spe
Samsung SSD 9100 PRO 4TB, PCIe 5.0x4 M.2 2280, Seq...
$799.99
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Heat and Reliability at 4TB

Higher capacity drives run slightly hotter than 2TB drives due to higher controller activity managing more NAND dies. A 4TB Gen5 drive without active heatsinking will throttle within 2-3 minutes of sustained writes. Every 4TB drive in this lineup either ships with a heatsink (WD_Black SN850X) or strongly recommends use with the motherboard's M.2 heatsink. Endurance ratings scale linearly with capacity — 4TB drives are rated for 2,400-3,000 TBW versus 1,200-1,500 TBW for 2TB.

Hybrid Gen4/Gen5 — The 990 EVO Plus

Samsung's 990 EVO Plus 4TB at $669 is a unique design — uses 4 PCIe Gen4 lanes or 2 PCIe Gen5 lanes depending on the slot. In a Gen5 slot it operates as a 2-lane Gen5 drive, achieving 7,250 MB/s reads. The benefit is freeing the other 2 Gen5 lanes for PCIe expansion (rare use case). Performance matches a top Gen4 drive at any slot configuration — pick this only if you have specific lane-count requirements or find it heavily discounted.

See detailed reviews below ↓

Reviewed
Samsung T7 Portable SSD 4TB
Best for: Professional video editors, game collectors, and photographers who need massive portable storage without compromising speed

“The Samsung T7 4TB is the premium choice for users who need maximum portable storage — 4TB in a pocketable metal form factor at the same speed as smaller T7 models.”

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What we like

  • 4TB in the same compact Samsung T7 chassis
  • Same 1,050 MB/s read speed at all capacity tiers
  • Enough storage for a full game library or 400+ hours of 4K footage
  • Samsung reliability backing the highest capacity available

Watch out for

  • Expensive at $250
  • Price per GB less favorable than 1TB and 2TB tiers
  • Gets warmer than smaller capacity models during sustained transfers
Key Specs
Color Titan Gray
Model Name T7
Read Speed 1050 Megabytes Per Second
Unit Count 1.0 Ounce
Form Factor Portable
Media Speed 1000 megabits_per_second
Built-In Media User Manual
Hard-Drive Size 4 TB
Number Of Items 1
Best Sellers Rank #2 in External Solid State Drives
Installation Type External Hard Drive
Compatible Devices Gaming Console, Mac, PC, Smartphone, Tablet
Data Transfer Rate 10 Gigabits Per Second
Enclosure Material Flash Memory
Additional Features Read up to 1,050 MB/sec Sequential, Shock Resistant, Thermal Control, Write up to 1,000 MB/sec Sequential
Hard Disk Interface USB 3.2
Warranty Description 3 Year Limited Warranty
Hard Disk Description Solid State Drive
Hard Disk Form Factor 85 Inches
Hardware Connectivity Solid State Drive
Connectivity Technology USB
Digital Storage Capacity 4 TB
Specific Uses For Product Personal
Cache Memory Installed Size 4
Item Dimensions L X W X Thickness 3.34"L x 2.24"W x 0.31"Th
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Full Specs & Measurements
ColorTitan Gray
Model NameT7
Read Speed1050 Megabytes Per Second
Unit Count1.0 Ounce
Form FactorPortable
Media Speed1000 megabits_per_second
Built-In MediaUser Manual
Hard-Drive Size4 TB
Number Of Items1
Best Sellers Rank#2 in External Solid State Drives
Installation TypeExternal Hard Drive
Compatible DevicesGaming Console, Mac, PC, Smartphone, Tablet
Data Transfer Rate10 Gigabits Per Second
Enclosure MaterialFlash Memory
Additional FeaturesRead up to 1,050 MB/sec Sequential, Shock Resistant, Thermal Control, Write up to 1,000 MB/sec Sequential
Hard Disk InterfaceUSB 3.2
Warranty Description3 Year Limited Warranty
Hard Disk DescriptionSolid State Drive
Hard Disk Form Factor85 Inches
Hardware ConnectivitySolid State Drive
Connectivity TechnologyUSB
Digital Storage Capacity4 TB
Specific Uses For ProductPersonal
Cache Memory Installed Size4
Item Dimensions L X W X Thickness3.34"L x 2.24"W x 0.31"Th

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