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.
Controller & Memory
The Apacer AS2280Q4U 500 GB runs Phison's PS5018-E18, a flagship PCIe 4.0 controller with a discrete DRAM cache, paired with Micron 176-layer 3D TLC NAND. The E18 is the same controller family that powers top Gen4 drives from Seagate, Sabrent, and others, and it carries its full flash translation layer mapping table in on-drive DRAM, the architecture that separates a genuine flagship from the DRAM-less HMB designs that fill the budget tier. Apacer rates the 500 GB at 7,000 MB/s sequential reads over PCIe 4.0 x4, and TechPowerUp's spec data for the 512 GB model confirms that read figure along with a capacity-tiered 3,000 MB/s sequential write speed and a five-year warranty.
The write-speed figure is the key capacity-specific detail on the AS2280Q4U line. The E18 controller scales sequential write speed with the number of populated NAND dies it can interleave across, and the 500 GB populates the fewest dies of any capacity in the line, which is why it writes at 3,000 MB/s rather than the 6,000 MB/s the 1 TB reaches or the higher figures the larger capacities manage. Read speed holds at 7,000 MB/s regardless of capacity, so the 500 GB gives up nothing on reads to its larger siblings. The drive carries up to 450,000 random read and 300,000 random write IOPS on the 500 GB, per TechPowerUp, stepping up substantially on the larger capacities.
The AS2280Q4U targets buyers who want the E18's discrete-DRAM consistency for sustained workloads and gaming but at the lowest capacity and price. The discrete DRAM cache keeps random I/O latency steady under heavy mixed writes where DRAM-less designs eventually slow, and the Micron 176-layer TLC delivers flagship-tier endurance and sustained performance. Direct competitors include other E18 drives such as the Seagate FireCuda 530 and the Sabrent Rocket 4 Plus, and the broader Gen4 flagship set including the Samsung 980 Pro and WD Black SN850X, with the AS2280Q4U's angle being Apacer's pricing and the five-year warranty. The main caveat for the 500 GB specifically is that capacity-tiered write speed, which makes it a weaker choice for sustained-write-heavy workloads than the larger capacities.
Storage Comparisons:
AS2280Q4U Performance & Benchmarks
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.
Apacer AS2280Q4U 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 AS2280Q4U 500 GB (this drive): 7,000 MB/s read, 3,000 MB/s write
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.
Apacer AS2280Q4U vs Competitors
See how the AS2280Q4U stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
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.
Apacer AS2280Q4U 500 GB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 500 GB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Phison PS5018-E18 8Channel |
| Memory type [?] | Micron 176-L TLC |
| DRAM [?] | Yes |
| Read speed (MB/s) [?] | 7000 |
| Write speed (MB/s) [?] | 3000 |
| Read IOPS [?] | 450000 |
| Write IOPS [?] | 300000 |
| Endurance (TBW) [?] | 164 |
| MTBF (million hours) [?] | 2000000 |
| Warranty (years) [?] | 5 |
Verdict: Is the AS2280Q4U Worth It in 2026?
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.
+ 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
Buy this or similar SSD Storage:
Video Review
Eclipse Your Rivals - Apacer AS2280Q4U M.2 PCIe Gen4 x4 SSD
