# 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.

Quick answer: 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OS and core applications, you want E16 hardware at the lowest possible cost, and you accept the 3-year warranty and unpublished endurance as trade-offs.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.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 500 GB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | 3D TLC |
| DRAM cache | DDR4 Cache |
| Sequential read | 5000 MB/s |
| Sequential write | 4400 MB/s |
| Random read IOPS | 750000 |
| Random write IOPS | 750000 |
| Endurance | 600 TBW |
| MTBF | 1.5 |
| Warranty | 3 years |

## Performance

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.

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.

## 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.

## Pros and Cons

**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


## Verdict

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.

## Frequently Asked Questions

### Does the Apacer AS2280Q4 have a DRAM cache?

Yes. The Phison PS5016-E16 is an 8-channel controller that requires dedicated DRAM for the flash translation layer. All E16 drives include DRAM, and the AS2280Q4 is no exception — it uses DDR4 DRAM. This is a significant hardware advantage over DRAM-less HMB drives in the same price range, providing more consistent latency under mixed workloads and high queue depths. For a budget drive, having an 8-channel controller with DRAM is uncommon and is the AS2280Q4's strongest selling point.

### What is the TBW endurance of the Apacer AS2280Q4 500GB?

Apacer does not publish a TBW endurance figure for any capacity in the AS2280Q4 lineup. The drive carries a 3-year warranty with a 1.5 million hour MTBF. This lack of documentation is unusual — most SSD manufacturers list TBW as a standard specification. For reference, other 500 GB Phison E16 drives were rated between 800 and 900 TBW. Without a published figure, treat the 3-year warranty as the practical coverage limit and plan usage accordingly.

### Does the AS2280Q4 need a heatsink?

Yes — the Phison E16 controller runs hot and requires a heatsink for sustained writes. Without one, thermal throttling will reduce performance within minutes. A motherboard M.2 heatsink is sufficient for most desktop use. The drive does not ship with a heatsink. This is a desktop drive — the E16's power draw and heat output make it unsuitable for laptops or fanless systems.

### Is 500 GB enough for a gaming PC?

It is tight. A Windows 11 installation, core drivers, and essential applications consume roughly 60—80 GB. Modern AAA games range from 50—150 GB each, meaning the AS2280Q4 500 GB can hold the OS and 3—5 large games before filling up. It is best suited as a dedicated boot drive with a secondary SSD or HDD for game storage. If 500 GB is your only drive, expect to uninstall and reinstall games frequently. The 1 TB variant is a more practical single-drive gaming solution.

### Why does the AS2280Q4 only have a 3-year warranty?

Most Phison E16 drives carry a 5-year warranty, so the AS2280Q4's 3-year coverage is a deliberate cost-optimisation by Apacer. Shorter warranties reduce the manufacturer's liability and allow a lower retail price. Whether this matters depends on your upgrade cycle — if you replace drives every 2—3 years, the 3-year warranty is sufficient. If you keep drives for 5-plus years, a competitor with a 5-year warranty like the Corsair MP600 provides longer coverage at a similar hardware level.

### Is the 500 GB version slower than the 1 TB AS2280Q4?

Apacer publishes identical speed ratings across all capacities — 5,000 MB/s read and 4,400 MB/s write. However, the 500 GB variant has fewer NAND packages and channels active, which typically results in slightly lower real-world write throughput and a smaller SLC write cache compared to the 1 TB and 2 TB models. The read speed is likely identical in practice. For bursty desktop use, all capacities feel the same; the 500 GB shows its limits in sustained transfers and cache capacity.

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Last updated: 2026-05-23. Source: https://ssdrive.net/apacer-as2280q4-500-gb