Performance and Pricing
Although newer PCIe 5.0 drives have entered the market, the 4TB Samsung 990 Pro remains a top-tier choice for massive storage capacity and fast data rates in a single-sided M.2 2280 form factor. Due to memory and storage market pressures driven by industry demand, prices have climbed significantly, making a 27 percent discount notable. The 4TB drive has dropped from $1,099 to $799.90, translating to roughly 20 cents per gigabyte.
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Specifications and Endurance
The drive delivers maximum sequential reads of 7,450 MB/s and sequential writes of 6,900 MB/s. Random reads and writes reach 1.6 million and 1.55 million IOPS respectively, while total bytes written endurance is rated at 2,400 TBW.
This M.2 NVMe drive pushes the limits of Gen 4 bandwidth, making it suitable for large game libraries and heavy file transfers.
Endurance remains robust at 2,400 TBW, ensuring long-term reliability under heavy write workloads.
Architecture and Testing
Samsung utilizes 236-layer TLC V-NAND to reach the 4TB density within a single-sided architecture, accommodating compact spaces in modern hardware setups. In storage benchmark testing, the drive exhibits low latency figures, contributing to responsive application and game load times.
Sustained Writes and Efficiency
During sustained sequential write testing, the 4TB model maintains 6.2 GB/s speeds for roughly 75 seconds using a 10GB pSLC cache before dropping to 1.6 GB/s as data moves to the TLC flash. Power efficiency reaches 421.1 MB/s per watt, placing it near the front of the Gen 4 competition.
While current market pricing sits well above historical lows, the 4TB Samsung 990 Pro provides a capable high-capacity solution for users needing maximum Gen 4 performance right now.
