Apacer AS2280Q4 500GB Review — Phison E16 PCIe 4.0 NVMe SSD (2026)
The Apacer AS2280Q4 500 GB is the entry-level capacity of Apacer's Phison E16 PCIe 4.0 lineup — a 500 GB boot drive with an 8-channel DRAM controller that is held back only by a shorter 3-year warranty and a manufacturer that declines to publish endurance figures.
Controller & Memory
The Apacer AS2280Q4 is built on the Phison PS5016-E16, the first-generation PCIe 4.0 controller that Apacer deployed across a 500 GB, 1 TB, and 2 TB product stack. It is an 8-channel design with DDR4 DRAM and 3D TLC NAND, delivering rated speeds of 5,000 MB/s sequential read and 4,400 MB/s sequential write. Apacer publishes the same speed and IOPS ratings across all capacities — 750,000 IOPS for both reads and writes — which is uncommon, as smaller capacities typically have lower write throughput and IOPS on the E16 platform. The drive uses the M.2 2280 form factor with the PCIe 4.0 x4 interface.
The 500 GB variant reviewed here is the smallest in the AS2280Q4 family. It is positioned as a budget boot drive — enough capacity for an OS, core applications, and a handful of games, but not a single-drive solution for a large library. Apacer does not publish TBW endurance figures for any AS2280Q4 capacity, and the warranty is 3 years rather than the 5 years that most E16 drives carry. These are cost-cutting measures that position the AS2280Q4 below brand-name E16 competitors like the Corsair MP600 and Sabrent Rocket 4.0.
The AS2280Q4 competes at the budget end of the PCIe 4.0 segment. The E16 controller and DRAM cache give it a hardware advantage over DRAM-less alternatives, but the short warranty and unpublished endurance make it harder to recommend over a fully documented alternative. For a budget build where the 500 GB capacity is sufficient and the E16 hardware is the draw, the AS2280Q4 is a capable drive with a caveat-ridden spec sheet.
Storage Comparisons:
AS2280Q4 Performance & Benchmarks
Apacer rates the AS2280Q4 500 GB at up to 5,000 MB/s sequential reads and 4,400 MB/s sequential writes — identical to the 1 TB and 2 TB variants on paper, though the 500 GB capacity may achieve slightly lower real-world write throughput due to fewer populated NAND channels. Random performance is rated at 750,000 IOPS for both reads and writes. In practice, game loads, OS boots, and application launches are indistinguishable from any NVMe drive.
Apacer AS2280Q4 500 GB 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.
- Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
- Apacer AS2280Q4 500 GB (this drive): 5,000 MB/s read, 4,400 MB/s write
The E16 uses a pSLC write cache to absorb burst writes. On the 500 GB capacity, the cache is smaller than on larger variants — likely 70—100 GB — and direct-to-TLC writes settle in the 1,000—1,500 MB/s range after the cache fills. For a 500 GB boot drive that holds an OS and core applications, the cache size is adequate — most writes are small and bursty. The E16 controller demands a heatsink for sustained writes; without one, thermal throttling engages within minutes. A motherboard M.2 heatsink is recommended.
Apacer AS2280Q4 vs Competitors
See how the AS2280Q4 stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Apacer does not publish a TBW endurance rating for the AS2280Q4 at any capacity. The drive carries a 3-year warranty — shorter than the 5-year standard on most Phison E16 drives — and an MTBF of 1.5 million hours. The combination of unpublished TBW and a shorter warranty suggests Apacer is conservative about the AS2280Q4's longevity or is simply cost-optimising the warranty period. For reference, other E16 500 GB drives were rated at 800—900 TBW. Without a published figure, heavy writers should treat the AS2280Q4 as having typical TLC endurance and plan around the 3-year warranty as the practical coverage limit. Apacer handles warranty through its distribution network.
Apacer AS2280Q4 500 GB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 500 GB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Phison PS5016-E16 |
| Memory type [?] | 3D TLC |
| DRAM [?] | DDR4 Cache |
| Read speed (MB/s) [?] | 5000 |
| Write speed (MB/s) [?] | 4400 |
| Read IOPS [?] | 750000 |
| Write IOPS [?] | 750000 |
| Endurance (TBW) [?] | 600 |
| MTBF (million hours) [?] | 1.5 |
| Warranty (years) [?] | 3 |
Verdict: Is the AS2280Q4 Worth It in 2026?
The Apacer AS2280Q4 500 GB is a Phison E16 drive at an entry-level price, with an entry-level warranty to match. It delivers the same controller and DRAM cache as more expensive E16 drives, and the 5,000 MB/s reads are adequate for any consumer workload. Buy it if the 500 GB capacity is sufficient for your OS and core applications, you want E16 hardware at the lowest possible cost, and you accept the 3-year warranty and unpublished endurance as trade-offs. Skip it if you need a 5-year warranty, published endurance numbers, or a larger capacity — the Corsair MP600 500 GB or a modern 1 TB DRAM-less drive like the WD Blue SN580 will offer better documentation and headroom for a modest price increase.
+ Pros
- 5,000 MB/s reads on the Phison E16 PCIe 4.0 controller
- DDR4 DRAM cache — rare at this price point
- 750,000 IOPS rated for both reads and writes
- 8-channel controller with mature firmware
- Available in 500 GB for budget-conscious builds
- Same E16 silicon as the Corsair MP600 and Sabrent Rocket 4.0
- Cons
- Only a 3-year warranty — shorter than the 5-year E16 standard
- No published TBW endurance rating
- 500 GB capacity limits use to boot drive or light gaming
- Phison E16 requires a heatsink for sustained writes
- Write speed and IOPS may be lower in practice than rated on paper
Buy this or similar SSD Storage:
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