Samsung 990 Pro 4TB SSD Drops to $799.90, About 20 Cents per GB
The 4TB Samsung 990 Pro is $799.90, with Gen 4 speeds up to 7,450 MB/s and a single-sided design.
The Samsung 990 Pro 4TB costs $799.90 after a drop from $1,099.99, a discount of about 27% and more than $300. At roughly 20 cents per gigabyte, it puts a high-capacity PCIe Gen 4 drive within reach at a time when storage prices have climbed. The price is still far above the lows seen in earlier years, but for someone who needs 4TB now, this deal makes a fast, roomy M.2 drive easier to justify.
See the Samsung 990 Pro 4TB at Amazon
The 990 Pro is a PCIe Gen 4 NVMe SSD in the compact M.2 2280 format. Samsung rates it for sequential reads of up to 7,450 MB/s and writes of up to 6,900 MB/s, near the interface’s practical ceiling. Those figures make it a strong fit for systems that can take advantage of Gen 4 bandwidth, including gaming PCs and workstations with large files or demanding storage workloads. A newer Gen 5 drive may offer more peak bandwidth, but the 990 Pro remains a fast option for Gen 4 slots.
Performance beyond peak speeds
In testing, the 4TB model performed well across most measured workloads. Its random read and write ratings are 1.6 million and 1.55 million IOPS, respectively. Those measures describe how many small operations a drive can handle per second, and can matter when a workload involves many scattered files rather than long, continuous transfers. The review also found that the drive delivered the lowest latency in its 3DMark storage test, a result relevant to responsive game loading.
Long write sessions reveal a different part of the performance story. The drive sustained 6.2 GB/s for 75 seconds in an IOMeter sequential write test, supported by 10GB of pSLC cache. Once a transfer exceeds that cache and data is written directly to TLC NAND, the reported speed falls to 1.6 GB/s. That’s still useful context for anyone moving very large files: short transfers can benefit from the faster cache, while extended writes depend on the drive’s slower post-cache performance.
Power efficiency is another strength in the review. The 990 Pro delivered 421.1 MB/s per watt, ahead of the tested competitors except the Addlink A93 4TB and Lexar NM790 4TB. That result can matter in systems where power draw and heat affect sustained operation, though the article does not provide a temperature comparison or details about performance under different cooling setups.
Capacity in a single-sided drive
Samsung uses 236-layer TLC V-NAND to fit 4TB onto a single-sided M.2 2280 drive. That layout is useful when a laptop or other compact system has limited clearance around its storage slot. Before buying, it’s still sensible to check the system’s supported drive length, capacity, and cooling requirements; the 2280 label describes the drive’s dimensions, but doesn’t guarantee every device has enough room or supports every capacity.
The rated endurance is 2,400 TBW, or terabytes written. It gives buyers a published reference for the amount of data Samsung rates the drive to write over its service life, though actual workloads vary and the figure doesn’t predict an individual drive’s lifespan.
Samsung 990 Pro 4TB SSD: $799.90, down from $1,099.99
The M.2 2280 NVMe drive offers sequential read and write speeds of up to 7,450 MB/s and 6,900 MB/s, with 4TB of capacity in a single-sided design.
Samsung rates random reads and writes at 1.6 million and 1.55 million IOPS, and endurance at 2,400 TBW. View the deal
At $799.90, the 990 Pro is not a return to the much lower storage prices of previous years. Its case rests on the combination of 4TB capacity, high Gen 4 throughput, strong test results, and a compact single-sided build. Buyers focused on maximum transfer rates may compare it with Gen 5 options, while those choosing this drive should weigh the sale price against their need for capacity and check whether their system can make use of its speed.
