Addlink S92 4TB Review — QLC PCIe 4.0 NVMe SSD

Posted on May 17, 2026 by Raymond Chen

The Addlink S92 4 TB is the top-capacity QLC drive in a lineup defined by capacity over speed, and at 4 TB of PCIe 4.0 storage with a DRAM cache, it costs less per gigabyte than almost anything else with an M.2 slot — endurance caveats included.

Addlink S92 4TB Review — QLC PCIe 4.0 NVMe SSD

The 4 TB Addlink S92 is the fully populated variant of the QLC Phison E16 platform. It uses the same 8-channel PS5016-E16 controller, DDR3 DRAM cache, and Micron 3D QLC NAND as its smaller siblings, but fills both sides of the M.2 2280 PCB with NAND packages to reach 4 TB — a capacity that was rare for consumer M.2 drives when the S92 launched. The endurance rating climbs to 600 TBW, which is triple the 1 TB variant but notably does not double the 2 TB's 400 TBW — QLC endurance does not scale linearly with capacity in the same way TLC does.

The S92 family spans 1 TB, 2 TB, and 4 TB. The 4 TB reviewed here is the capacity play: a single-drive solution for a massive game library, a media server cache, or a photo and video archive where the working set far exceeds what a 2 TB drive can hold. The competition at 4 TB in the QLC space is thin — the Corsair MP400 tops out at 8 TB (SATA-class speeds on a different controller revision), and the Sabrent Rocket Q 4 TB uses the same E16 platform with similar specs. The S92 4 TB competes more against external hard drives and entry-level SATA SSDs than against other NVMe drives — its selling point is 4 TB of decently fast NVMe storage at a price per gigabyte that approaches spinning rust.

Use the S92 4 TB as bulk storage: a Steam and Game Pass library, a Plex media cache, a photo archive. Fill it once over a weekend and spend the next five years reading from it. That is the QLC value proposition in a nutshell, and at 4 TB the S92 delivers it at a scale where the endurance ceiling, while low for the capacity, is still high enough in absolute terms for read-heavy use.

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🚀 Performance and benchmarks

Addlink rates the S92 4 TB at up to 4,900 MB/s sequential reads and 3,600 MB/s sequential writes — identical to the 1 TB and 2 TB variants, as the E16 controller ceiling does not change with capacity. Random performance is rated at up to 350,000 read IOPS and 700,000 write IOPS. The 4 TB capacity brings a larger SLC write cache — likely 250—400 GB when the drive is empty, based on E16 QLC platform behaviour — which means the initial fill and large file transfers stay at full speed across substantially larger data volumes before the QLC write cliff arrives.

Performance comparison

Addlink S92 4 TB vs M.2 4.0 x 4 peers

Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.

PNY XLR8 CS3140 1 TB: 7,500 MB/s read, 5,650 MB/s write
PNY XLR8 CS3140 2 TB: 7,500 MB/s read, 6,850 MB/s write
Asgard AN4 512 GB: 7,500 MB/s read, 5,500 MB/s write
Asgard AN4 1 TB: 7,500 MB/s read, 5,500 MB/s write
Addlink S92 4 TB (this drive): 4,900 MB/s read, 3,600 MB/s write

After the pSLC cache exhausts, direct-to-QLC writes settle at roughly 200—400 MB/s — the same post-cache floor as the smaller capacities, since the bottleneck is QLC NAND program time, not NAND parallelism. For a drive that will likely be filled once with terabytes of games or media and then read from indefinitely, this is acceptable: the initial fill may take hours, but subsequent use is read-only at full NVMe speeds. The Phison E16 controller requires a heatsink for sustained writes — filling 4 TB in one session will push the controller to its thermal limit on a bare drive. A motherboard M.2 heatsink or active airflow is strongly recommended during the initial fill.

🖥️ Endurance and warranty

The 4 TB Addlink S92 carries a 600 TBW endurance rating and a 5-year limited warranty. At a typical 20 GB/day write rate — reasonable for a media archive or game library — this translates to roughly 82 years of service. The endurance does not scale linearly from the 2 TB's 400 TBW, which may reflect the practical limits of QLC NAND endurance even with additional capacity. For context, the Sabrent Rocket Q 4 TB (also QLC E16) is rated at 800 TBW. The S92's 600 TBW is low for a 4 TB drive but still provides adequate headroom for the read-heavy workloads the drive is designed for. Addlink handles warranty through its distribution network.

📊 Specs

Category	Value
Capacity [?]	4 TB
Interface [?]	M.2 4.0 x 4
Controller [?]	Phison PS5016-E16
Memory type [?]	Micron 3D QLC
DRAM [?]	DDR3
Read speed (MB/s) [?]	4900
Write speed (MB/s) [?]	3600
Read IOPS [?]	350000
Write IOPS [?]	700000
Endurance (TBW) [?]	600
MTBF (million hours) [?]	1.8
Warranty (years) [?]	5

Conclusion

The Addlink S92 4 TB is a specialist drive for a specific buyer: someone who needs 4 TB of NVMe storage at the lowest possible cost and whose workload is overwhelmingly reads. It is a game library, a media server cache, a photo archive — a drive you fill once and read from for years. Buy it if capacity per dollar is your only metric and you understand that QLC endurance and post-cache write speeds are the price of admission. Skip it if you write heavily, if you need a boot drive, or if sustained throughput matters — a TLC alternative like the WD Black SN850X 4 TB or the Samsung 990 Pro 4 TB will cost more but remove every QLC compromise. The S92 4 TB is QLC executed at scale, and for the right workload it is hard to beat on value.

+ Pros

4 TB of PCIe 4.0 NVMe storage at a budget price per gigabyte
4,900 MB/s reads — fast enough for game loads and media streaming
DDR3 DRAM cache for consistent read latency
5-year warranty on the highest capacity in the S92 lineup
Larger SLC cache than lower capacities for sustained burst writes
Single-drive solution for large game and media libraries

- Cons

600 TBW endurance — low for a 4 TB drive, below QLC competitors
Direct-to-QLC write speed drops to 200—400 MB/s after cache fills
Initial fill of 4 TB takes hours at post-cache write speeds
DDR3 DRAM is slower than the DDR4 used in most E16 designs
Phison E16 requires a heatsink for sustained writes

🛒 Buy this or similar SSD Storage:

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✨ Video Review

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⁉️ FAQ

The 4 TB capacity is rated for 600 TBW, backed by a 5-year limited warranty. This is triple the 1 TB variant's 200 TBW but only 1.5x the 2 TB variant's 400 TBW — QLC endurance does not scale linearly with capacity due to the fundamental write limitations of 4-bit-per-cell NAND. At a typical 20 GB/day write rate for a media archive or game library, 600 TBW works out to roughly 82 years of service. For comparison, the Sabrent Rocket Q 4 TB (also QLC E16) is rated at 800 TBW. The S92's endurance is adequate for read-heavy storage but is not designed for write-intensive workloads.

Yes, and 4 TB is the capacity where the S92 makes the most sense for gaming. It can hold a massive library — 50-plus AAA titles alongside an OS and media — in a single M.2 slot. Games are overwhelmingly read workloads: once installed, they load from the drive at the full 4,900 MB/s, and the DDR3 DRAM cache keeps load times competitive with TLC drives. The QLC penalty appears during the initial install wave: filling 4 TB of games may take many hours, and the write speed will slow significantly after the SLC cache fills. If you install your entire library in one marathon session, be prepared for the back half to crawl. If you install games gradually over time, the cache recovers between sessions and each install completes at full speed.

QLC NAND endurance does not scale linearly with capacity the way TLC does. Each QLC cell can endure a limited number of program/erase cycles regardless of how many cells are present. While a larger capacity spreads writes across more cells, reducing write amplification, QLC's inherently low cycle endurance means the improvement is not proportional. The 1 TB S92 is rated at 200 TBW, the 2 TB at 400 TBW (2x), but the 4 TB at 600 TBW (only 1.5x the 2 TB). This reflects the practical endurance ceiling of the Micron QLC NAND used in the S92, not an arbitrary cap. For read-heavy workloads the 600 TBW is still adequate for years of service.

It is not recommended despite the large capacity. An OS generates 20—30 GB/day of background writes. Over 5 years, that alone accounts for 36—55 TBW, or 6—9% of the drive's endurance — manageable in isolation but not when combined with application installs and user data. More importantly, the QLC write cliff means Windows updates and background tasks will periodically slow to hard-drive speeds. A 4 TB TLC boot drive like the WD Black SN850X costs significantly more but provides better endurance, consistent write speeds, and a more responsive OS experience. Reserve the S92 4 TB for secondary storage and use a smaller, faster TLC drive for the OS.

It depends on the data and how you transfer it. The SLC write cache on the 4 TB model is estimated at 250—400 GB when empty. The first 250—400 GB will transfer at roughly 3,000—3,600 MB/s — about 2 minutes. After the cache fills, writes drop to 200—400 MB/s. Filling the remaining 3.6—3.75 TB at that speed takes roughly 2.5—5 hours. In practice, a mix of game installs (which decompress in real time and write slower than raw sequential transfers) and file copies will take longer. The S92 4 TB is best filled gradually — install a few games per session and let the cache recover between uses — rather than in one marathon session.

Yes, especially during the initial fill. The Phison E16 controller generates substantial heat, and filling 4 TB of QLC NAND is a sustained workload that will push the controller to its thermal ceiling. Without a heatsink, thermal throttling will engage within 5—10 minutes and further reduce write speeds below the already-slow post-cache floor. A motherboard M.2 heatsink with adequate case airflow is the minimum. For a one-time fill, even a temporary fan directed at the M.2 area will help. In day-to-day read-heavy use, the heatsink is less critical — the E16 runs cool when reading.

The S92 4 TB reads at 4,900 MB/s — roughly 30—40 times faster than a USB 3.0 external hard drive and over 100 times faster in random access. Game loads, media scrubbing, and file browsing are instantaneous on the S92 versus the multi-second delays of spinning rust. The external hard drive wins on cost — a 4 TB portable HDD costs a fraction of any NVMe SSD — and on sustained write consistency (no QLC cache cliff). If your workload is write-once-read-many with a need for speed, the S92 4 TB is a dramatic upgrade. If you need cheap bulk cold storage that sits on a shelf, the hard drive still wins on price.