# Apacer AS2280Q4U 500 GB: The E18 Platform's Entry Capacity (2026)

The Apacer AS2280Q4U 500 GB is the entry capacity of Apacer's Phison E18 line, pairing Micron 176L TLC and discrete DRAM for 7,000 MB/s reads and capacity-tiered 3,000 MB/s writes.

Quick answer: The Apacer AS2280Q4U 500 GB puts the Phison E18 flagship platform, discrete DRAM cache and all, into the entry capacity of the line, delivering 7,000 MB/s reads and the consistent sustained-I/O behaviour that separates an E18 drive from cheaper DRAM-less alternatives. The Micron 176-layer TLC and the five-year warranty round out a genuine flagship-tier specification at the 500 GB price point. The caveat that comes with the entry capacity is the capacity-tiered 3,000 MB/s write speed, well below the 6,000 MB/s the 1 TB reaches, which makes the 500 GB a stronger fit for read-heavy boot-and-apps and gaming duty than for sustained-write-heavy content creation. For buyers who want flagship Gen4 responsiveness and the E18's discrete-DRAM consistency at the lowest capacity and price, the 500 GB delivers. Buyers who need higher write speed, more endurance headroom, or more storage should step up to the 1 TB or 2 TB AS2280Q4U, and buyers comparing across brands should weigh the AS2280Q4U against the Seagate FireCuda 530, Sabrent Rocket 4 Plus, Samsung 980 Pro, and WD Black SN850X on the same E18 or equivalent flagship platform.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 500 GB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5018-E18 8Channel |
| Memory type | Micron 176-L TLC |
| DRAM cache | Yes |
| Sequential read | 7000 MB/s |
| Sequential write | 3000 MB/s |
| Random read IOPS | 450000 |
| Random write IOPS | 300000 |
| Endurance | 164 TBW |
| MTBF | 2000000 |
| Warranty | 5 years |

## Performance

Apacer rates the AS2280Q4U 500 GB at 7,000 MB/s sequential reads over PCIe 4.0 x4, with 3,000 MB/s sequential writes, 450,000 random read IOPS, and 300,000 random write IOPS, per TechPowerUp's spec data for the 512 GB capacity. The read speed reaches the E18 platform's ceiling, but the write speed is capacity-tiered down to 3,000 MB/s because the 500 GB populates the fewest NAND dies in the line and gives the controller the least parallelism to interleave writes across.

The defining performance trait of the E18 platform versus DRAM-less drives is its discrete DRAM cache, which holds the complete flash translation layer mapping table on-drive and keeps random I/O latency consistent under sustained mixed workloads and heavy writes. That consistency is the reason buyers pay for an E18 drive over a cheaper DRAM-less alternative, and it shows up in large file transfers, DirectStorage game loading, and content-creation workloads that stress the mapping table. The Micron 176-layer TLC NAND is current-generation high-density flash that pairs well with the E18's eight-channel design. The trade-off on the 500 GB specifically is the 3,000 MB/s write ceiling, which is well below the 6,000 MB/s the 1 TB reaches and means the entry capacity is not the right choice for buyers whose workload is dominated by large sustained writes. For a boot-and-apps drive where reads dominate, the 7,000 MB/s read speed and the discrete DRAM's responsiveness deliver a genuine flagship feel at the entry capacity.

## Endurance, TBW & Warranty

Apacer covers the AS2280Q4U with a five-year limited warranty, terminated at whichever arrives first between the term and the drive's TBW endurance rating, matching the coverage on other E18-based flagship Gen4 drives and confirmed by TechPowerUp's spec data. Apacer does not publish a verified per-capacity TBW rating for the 500 GB AS2280Q4U in accessible sources, so the exact endurance figure for this capacity is not stated here; what is verifiable is the five-year term and the E18-plus-Micron-176L platform, which together indicate a flagship-tier reliability target. The five-year coverage is the more practical reliability figure for most buyers, since it reflects Apacer's confidence in the E18 platform's sustained behaviour and is competitive with the Samsung 980 Pro, WD Black SN850X, and Seagate FireCuda 530, all of which carry five-year warranties on the same controller class. Buyers running heavy sustained-write workloads should note that the 500 GB's capacity-tiered 3,000 MB/s write speed makes it a less natural fit for write-intensive duty than the larger AS2280Q4U capacities, and those buyers may prefer the 1 TB or 2 TB for both higher write speed and higher endurance headroom. Warranty support is accessible through Apacer's established global retail presence, a practical advantage over region-limited competitors.

## Pros and Cons

**Pros:**

- Phison E18 flagship controller with discrete DRAM cache
- Micron 176-layer 3D TLC NAND
- 7,000 MB/s sequential reads, full E18 read ceiling
- Five-year warranty, matching other E18 flagship drives
- Consistent sustained I/O where DRAM-less drives slow
**Cons:**

- 3,000 MB/s writes are capacity-tiered, far below the 1 TB's 6,000 MB/s
- 500 GB fills quickly for modern game and media libraries
- Verified per-capacity TBW not published in accessible sources
- E18 runs hotter and draws more power than DRAM-less alternatives
- Higher price per gigabyte than DRAM-less Gen4 drives


## Verdict

The Apacer AS2280Q4U 500 GB puts the Phison E18 flagship platform, discrete DRAM cache and all, into the entry capacity of the line, delivering 7,000 MB/s reads and the consistent sustained-I/O behaviour that separates an E18 drive from cheaper DRAM-less alternatives. The Micron 176-layer TLC and the five-year warranty round out a genuine flagship-tier specification at the 500 GB price point. The caveat that comes with the entry capacity is the capacity-tiered 3,000 MB/s write speed, well below the 6,000 MB/s the 1 TB reaches, which makes the 500 GB a stronger fit for read-heavy boot-and-apps and gaming duty than for sustained-write-heavy content creation. For buyers who want flagship Gen4 responsiveness and the E18's discrete-DRAM consistency at the lowest capacity and price, the 500 GB delivers. Buyers who need higher write speed, more endurance headroom, or more storage should step up to the 1 TB or 2 TB AS2280Q4U, and buyers comparing across brands should weigh the AS2280Q4U against the Seagate FireCuda 530, Sabrent Rocket 4 Plus, Samsung 980 Pro, and WD Black SN850X on the same E18 or equivalent flagship platform.

## Frequently Asked Questions

### Why does the Apacer AS2280Q4U 500 GB write at only 3,000 MB/s?

Sequential write speed on the E18 platform scales with the number of populated NAND dies the controller can interleave across, and the 500 GB populates the fewest dies of any capacity in the line. TechPowerUp's spec data for the 512 GB model confirms the 3,000 MB/s write figure, against 6,000 MB/s on the 1 TB and higher still on larger capacities. Read speed stays at 7,000 MB/s regardless of capacity, so the 500 GB gives up nothing on reads. The lower write ceiling makes the entry capacity a better fit for read-heavy boot-and-apps and gaming duty than for large sustained writes.

### Does the Apacer AS2280Q4U 500 GB have a DRAM cache?

Yes, the AS2280Q4U runs Phison's PS5018-E18 with a discrete on-drive DRAM cache that holds the complete flash translation layer mapping table, the key feature separating it from DRAM-less HMB drives like the Addlink S93 or Apacer's own AS2280Q4X. The on-drive DRAM keeps random I/O latency consistent under sustained mixed workloads and heavy writes, where DRAM-less designs eventually slow as the host-memory buffer comes under pressure. This is the standard flagship-Gen4 architecture shared with the Samsung 980 Pro, WD Black SN850X, and Seagate FireCuda 530, and it is the main reason buyers choose an E18 drive over a cheaper DRAM-less alternative.

### Is the Apacer AS2280Q4U 500 GB fast?

Yes, on reads. It reaches 7,000 MB/s sequential reads, the E18 platform's ceiling, with up to 450,000 random read IOPS per TechPowerUp's spec data for the 512 GB model. Read performance is genuine flagship-tier. Sequential writes are capacity-tiered to 3,000 MB/s on the 500 GB, with 300,000 random write IOPS, both lower than the larger capacities because the entry capacity populates fewer NAND dies. For boot-and-apps use and gaming, which are read-dominated workloads, the drive feels like a flagship; for large sustained writes such as video exports or backup jobs, the capacity-tiered write speed is the limiting factor.

### What is the warranty on the Apacer AS2280Q4U 500 GB?

Apacer covers the AS2280Q4U with a five-year limited warranty, terminated at whichever arrives first between the term and the drive's TBW endurance rating, confirmed by TechPowerUp's spec data and matching the coverage on other E18-based flagship Gen4 drives. That five-year term puts the AS2280Q4U alongside the Samsung 980 Pro, WD Black SN850X, and Seagate FireCuda 530 on warranty length. Apacer does not publish a verified per-capacity TBW rating for the 500 GB in accessible sources, so the exact endurance figure is not stated here; the five-year term is the practical reliability figure. Apacer's established global retail presence makes the warranty practically accessible for buyers in North America and Europe.

### Is the Apacer AS2280Q4U 500 GB good for gaming?

Yes, particularly for a read-heavy gaming load. The 7,000 MB/s sequential reads and 450,000 random read IOPS are well beyond the point where storage speed limits game loading, after which the CPU and GPU take over. The discrete DRAM cache helps under DirectStorage workloads and large asset streaming, where DRAM-less drives can show more variance. The main constraint for gaming is the 500 GB capacity itself, since modern AAA titles routinely exceed 100 GB and a substantial Steam library fills the drive quickly. The capacity-tiered 3,000 MB/s write speed rarely affects gaming, which is dominated by reads. Buyers with large game libraries should step up to the 1 TB or 2 TB.

### Should I buy the Apacer AS2280Q4U 500 GB or the 1 TB?

The 1 TB is the better choice for most buyers who can afford it, because it lifts the capacity-tiered write speed from 3,000 MB/s to 6,000 MB/s and doubles the random write IOPS to 1,000,000, per TechPowerUp, while doubling the storage. Both run the same E18 controller, Micron 176-layer TLC, discrete DRAM, and five-year warranty, and both reach 7,000 MB/s reads. The 500 GB makes sense for a pure boot-and-apps drive where budget is the priority and read speed matters more than write throughput or capacity. For gaming, content creation, or any workload that touches sustained writes or needs more than a small library, the 1 TB is the stronger value.

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Last updated: 2026-07-25. Source: https://ssdrive.net/apacer-as2280q4u-500-gb