Samsung SSD 990 PRO 4TB, PCIe 4.0 M.2 2280, Up to 7,450

The Samsung 990 PRO is a high-capacity M.2 2280 NVMe solid-state drive aimed at people who push their systems hard. It targets gamers who want shorter load times, video editors who move large files constantly, and anyone running data-intensive workloads that can actually take advantage of PCIe 4.0 bandwidth. If your current drive is a bottleneck, this is the kind of upgrade that addresses that directly.

Sequential read and write speeds reach up to 7,450 and 6,900 MB/s respectively, which puts the 990 PRO near the ceiling of what PCIe 4.0 allows. In practical terms, that means transferring a large video project or installing a multi-gigabyte game happens noticeably faster than on older drives. The 4TB capacity is the standout configuration here: it is enough to hold a substantial game library, a working archive of raw footage, and an operating system without having to manage which files live where.

Random performance is where the 990 PRO separates itself from its predecessor. Samsung states more than a 55% improvement in random read and write performance compared to the 980 PRO. Random performance matters for tasks like loading game levels, launching applications, or handling many small files at once, not just for sequential transfers. The drive also delivers up to 50% better performance per watt over the 980 PRO, which means it does more work while drawing less power, a meaningful advantage in compact or thermally constrained builds.

A few limits are worth noting. The 990 PRO requires a motherboard with a PCIe 4.0 M.2 slot to reach its rated speeds; systems with only PCIe 3.0 slots will still work but at reduced performance. The listing does not specify whether a heatspreader is included, so buyers with tight thermal budgets may want to verify compatibility with their case or cooler setup. At 4TB, this is also a significant investment, and buyers with modest storage needs or lighter workloads may find a smaller capacity more practical.

Verdict: The Samsung 990 PRO 4TB is a strong choice for gamers, content creators, and power users who need fast, high-capacity storage and have a PCIe 4.0 system to pair it with. Buyers who do not regularly move large files or run demanding software are unlikely to notice the difference over a less expensive drive.

• Interface: PCIe 4.0 M.2 2280
• Capacity: 4TB (also available in 1TB and 2TB)
• Sequential Read Speed: Up to 7,450 MB/s
• Sequential Write Speed: Up to 6,900 MB/s
• Random Performance Improvement: More than 55% over 980 PRO
• Power Efficiency Improvement: Up to 50% better performance per watt over 980 PRO

A great fit if you:

• Own a PCIe 4.0 compatible system and want to get close to its maximum storage performance
• Store large game libraries and want faster load times without swapping drives
• Work with video editing, data analysis, or other tasks that involve moving big files regularly
• Want a single high-capacity drive rather than managing multiple smaller ones

Consider something else if you:

• Your motherboard only supports PCIe 3.0, since you will not reach the drive's rated speeds
• Your storage needs are light and a smaller, less expensive drive would cover them comfortably

What interface does the 990 PRO use?
It uses a PCIe 4.0 M.2 2280 interface. You will need a compatible M.2 slot on your motherboard to install it and reach its rated speeds.

What capacity options are available?
The 990 PRO is available in 1TB, 2TB, and 4TB configurations, so you can choose the size that fits your storage needs and budget.

How much faster is it compared to the 980 PRO?
Samsung states more than a 55% improvement in random performance over the 980 PRO, along with up to 50% better performance per watt, meaning it is both faster and more power-efficient than its predecessor.

Is this drive suitable for gaming?
Yes. The combination of near-maximum PCIe 4.0 sequential speeds and strong random performance is well suited to gaming, where fast level loading and quick file access matter.