Addlink S90 Lite 2TB Review — Affordable PCIe 4.0 NVMe SSD

Posted on May 17, 2026 by Raymond Chen

The Addlink S90 Lite 2 TB is a budget PCIe 4.0 drive that sacrifices sustained write performance for capacity and price — and for the right buyer, that trade-off makes perfect sense.

Addlink S90 Lite 2TB Review — Affordable PCIe 4.0 NVMe SSD

The S90 Lite is built on the Phison E21T controller, a four-channel DRAM-less PCIe 4.0 design that uses NVMe Host Memory Buffer (HMB) to manage the flash translation layer. It pairs that controller with TLC NAND — the vendor and layer count vary by production batch, and independent reviewers have noted that Addlink has swapped between TLC and QLC on this model without changing the SKU, a practice that makes specific NAND claims unreliable. The drive uses a single-sided M.2 2280 PCB, which fits in any standard desktop or laptop slot without clearance issues.

Addlink ships the S90 Lite in 512 GB, 1 TB, 2 TB, and 4 TB capacities. Sequential throughput is rated at up to 5,000 MB/s reads and 4,400 MB/s writes, with random IOPS reported at approximately 780,000 read and 800,000 write. The 2 TB variant reviewed here sits in the lineup's sweet spot — enough capacity for a single-drive system, and better sustained write performance than the smaller capacities thanks to greater NAND die parallelism.

The S90 Lite competes in the crowded budget PCIe 4.0 segment against the Silicon Power UD90, TeamGroup MP44L, and Kingston NV2. All are DRAM-less PCIe 4.0 drives targeting the same price-per-gigabyte buyer. The S90 Lite's differentiators are its 4 TB capacity ceiling — rare at this price point — and its 5-year warranty. The primary weakness noted by independent reviewers is sustained write performance, where the DRAM-less E21T platform and limited SLC cache cause write speeds to drop sharply under continuous load. For a game library or media archive where writes are infrequent, this is a non-issue; for users who regularly move large files, it is the drive's defining limitation.

✅ Storage Comparisons:

Top 2 TB SSDs Top PCIe 3.0 SSD Drives Best Deal of 1 TB SSDs NVME

🚀 Performance and benchmarks

The S90 Lite 2 TB is rated for 5,000 MB/s sequential reads and 4,400 MB/s sequential writes — figures that clear the PCIe 3.0 ceiling and enter Gen 4 territory, though they fall well short of high-end PCIe 4.0 drives like the Samsung 990 Pro (7,450 MB/s). Random performance is reported at approximately 780,000 IOPS read and 800,000 IOPS write at high queue depths, numbers that are competitive within the DRAM-less PCIe 4.0 segment.

Performance comparison

Addlink S90 Lite 2 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 S90 Lite 2 TB (this drive): 5,000 MB/s read, 4,400 MB/s write

The Phison E21T's defining characteristic is its SLC cache behavior. Burst writes up to the cache size — which scales with free capacity — complete at full rated speed. Once the cache fills, native TLC write speeds settle in a range that independent reviewers have described as "very poor sustained performance" (Tom's Hardware). This is standard for DRAM-less PCIe 4.0 drives in this price band; the Silicon Power UD90 and TeamGroup MP44L exhibit the same post-cache drop. For a drive used as a game library, the cache is large enough that game installs from Steam or similar platforms rarely exhaust it. For a video editing scratch disk or a drive that will see sustained writes of 100 GB or more at a time, the S90 Lite is the wrong tool — a DRAM-equipped drive like the Addlink S95 or WD Black SN770 will hold write speeds far better under sustained load.

🖥️ Endurance and warranty

Addlink backs the S90 Lite with a 5-year limited warranty, which is strong for a budget PCIe 4.0 drive. Endurance ratings are not publicly documented for this model — Addlink does not publish TBW figures on the S90 Lite product page or in the specification sheet, which is unusual for a 5-year-warrantied drive and makes it difficult for buyers to know whether their usage pattern will exhaust the warranty before the 5-year term expires. At 2 TB with TLC NAND, typical endurance for this controller class falls in the 600–1,200 TBW range, which at 50 GB/day provides 32 to 65 years of service. Buyers should be aware of the NAND lottery — independent reviewers have confirmed that Addlink has shipped S90 Lite drives with both TLC and QLC NAND under the same model number, and QLC variants will have significantly lower endurance than TLC. Warranty claims are handled through Addlink's support channels; the company is based in Taiwan with global RMA coverage.

📊 Specs

Category	Value
Capacity [?]	2 TB
Interface [?]	M.2 4.0 x 4
Controller [?]	n/a
Memory type [?]	3D TLC
DRAM [?]	HMB SLC
Read speed (MB/s) [?]	5000
Write speed (MB/s) [?]	4400
Read IOPS [?]	400000
Write IOPS [?]	800000
Endurance (TBW) [?]	n/a
MTBF (million hours) [?]	n/a
Warranty (years) [?]	5

Conclusion

Buy the Addlink S90 Lite 2 TB if you want the cheapest possible 2 TB PCIe 4.0 NVMe drive from a brand that offers a 5-year warranty. The 5,000 MB/s reads make it a strong game library or media archive drive, and the single-sided PCB installs anywhere. Skip it if you need consistent sustained write performance — the DRAM-less Phison E21T platform and aggressive SLC caching mean write speeds crater under continuous load, and the NAND lottery means your specific unit may use QLC with lower endurance than expected. For a few dollars more, the Addlink S95 offers a DRAM-equipped PCIe 4.0 platform with better sustained writes and published endurance. For a pure game library where writes are rare and reads are everything, the S90 Lite 2 TB is hard to beat on price per gigabyte.

+ Pros

5,000 MB/s reads — genuine PCIe 4.0 throughput at a budget price
Up to 4 TB capacity — rare at this price point
5-year warranty on a budget PCIe 4.0 drive
Single-sided M.2 2280 PCB fits any standard slot
Phison E21T controller runs cool and power-efficient

- Cons

Very poor sustained write performance after SLC cache exhaustion
Endurance ratings not publicly documented
NAND lottery — TLC and QLC shipped under the same SKU
DRAM-less HMB design limits mixed-workload consistency
No heatsink included despite PCIe 4.0 thermal demands

🛒 Buy this or similar SSD Storage:

Samsung 980 Pro 2 Tb

-57% $165
List Price: $379.99

Buy on Amazon

INLAND Performance Plus 1 Tb

$79.99

Buy on Amazon

Silicon Power 512GB NVMe SSD

$42.97

Buy on Amazon

✨ Video Review

Can an Amazon 1TB SSD compete with a Samsung EVO? Actually... yes | Hardware

⁉️ FAQ

Yes, the S90 Lite 2 TB is an excellent gaming drive at its price point. Game load times are dominated by random read latency, not sustained write throughput, so the drive's post-cache write weakness is irrelevant for gaming. The 5,000 MB/s sequential reads load game assets faster than any PCIe 3.0 drive, and the 2 TB capacity holds a substantial library. Game installs from Steam and similar platforms are write-once operations that typically complete within the SLC cache, so you will get full NVMe speed during downloads. The only gaming scenario where the S90 Lite falls short is continuous recording of high-bitrate gameplay footage, where sustained writes would eventually exhaust the cache. For a dedicated game library, the S90 Lite is one of the best price-per-gigabyte options in PCIe 4.0.

No, the S90 Lite is DRAM-less. It uses the Phison E21T controller with NVMe Host Memory Buffer (HMB) to borrow a portion of system RAM — typically 32 to 64 MB — for the flash translation layer mapping table. For a 2 TB drive, this HMB allocation is sufficient for normal operation below roughly 80 percent capacity. Once the drive nears full, the mapping table may exceed HMB capacity, causing increased latency under mixed workloads. This is standard behavior for all DRAM-less NVMe SSDs. For a game library or media archive that is mostly read and infrequently written to, HMB is perfectly adequate.

Addlink does not publish TBW endurance ratings for the S90 Lite, which is unusual for a drive with a 5-year warranty. For a 2 TB TLC drive on the Phison E21T platform, typical endurance falls in the 600–1,200 TBW range depending on the specific NAND used. At 50 GB/day, 600 TBW provides over 32 years of service. However, independent reviewers have confirmed that Addlink has shipped S90 Lite drives with both TLC and QLC NAND under the same model number — QLC variants will have significantly lower endurance. Buyers should verify the NAND type upon receipt using a tool like CrystalDiskInfo and be aware that Addlink's warranty may be TBW-limited even though the TBW figure is not publicly stated.

The S90 Lite 2 TB meets Sony's PCIe 4.0 x4 NVMe requirement and the 5,000 MB/s rated read speed, which is close to Sony's 5,500 MB/s recommendation. The single-sided M.2 2280 form factor fits the PS5 expansion bay, but the drive does not include a heatsink, and Sony requires one. You would need to install a third-party PS5-compatible heatsink that keeps total height under 11.25 mm. The S90 Lite is not on Sony's official compatibility list. While it will likely work — many users have reported success with other Phison E21T drives in PS5 — the lack of official certification means there is a small risk of the console rejecting the drive after a firmware update. For guaranteed PS5 compatibility, a drive on Sony's list like the WD Black SN850X or Sabrent Rocket 4 Plus is the safer choice.

The Samsung 990 Pro and Addlink S90 Lite occupy opposite ends of the PCIe 4.0 market. The 990 Pro is a flagship drive: 7,450 MB/s reads, DRAM-equipped, Samsung in-house controller and NAND, published 1,200 TBW endurance for 2 TB, and a premium price. The S90 Lite is a budget drive: 5,000 MB/s reads, DRAM-less, third-party Phison E21T controller, no published endurance, and a much lower price. For gaming and general use where reads dominate, the real-world experience is closer than the specs suggest — both drives load games and boot Windows at effectively the same speed. The 990 Pro earns its premium in sustained write performance, endurance, and the confidence of a fully documented, vertically integrated product. If your workload is 90 percent reads and 10 percent writes, the S90 Lite is the smarter price-per-gigabyte choice. If you do any sustained write work, the 990 Pro or a mid-range DRAM-equipped alternative is worth the premium.

The Phison E21T controller is built on a 12 nm process and runs relatively cool for a PCIe 4.0 controller, so a heatsink is not strictly required for typical desktop use with reasonable case airflow. However, PCIe 4.0 drives generate more heat than PCIe 3.0 drives, and sustained sequential workloads can push the controller into thermal throttling. If your motherboard includes an M.2 heatsink, use it — it costs nothing and provides thermal headroom. In a laptop, the existing thermal pad or chassis cooling is usually sufficient for bursty consumer workloads. For a PS5 installation, a heatsink is mandatory per Sony's requirements. For a desktop with no M.2 heatsink and poor airflow, a cheap third-party heatsink is a worthwhile five-dollar insurance policy against throttling.