# BIWIN Black Opal NV7400 4TB: DRAM-less Bulk PCIe 4.0 (2026)

The BIWIN Black Opal NV7400 4TB pairs a DRAM-less Maxio controller with Host Memory Buffer to hit 7,400 MB/s reads, giving bulk-capacity buyers flagship-class speed.

Quick answer: The Black Opal NV7400 4TB suits buyers who want a large, near-flagship-speed drive for a big game library or media archive without paying DRAM-equipped-flagship prices, including PS5 owners and content creators with moderate daily write volumes. Buyers doing frequent very large sustained writes, like professional video editors working directly off the drive daily, should lean toward a DRAM-equipped drive that holds its write speed longer once the SLC cache fills. The Crucial P3 Plus 4TB and WD Blue SN580 4TB are the closest DRAM-less alternatives if brand reputation and a longer independent track record matter more than BIWIN's rated numbers. For bulk storage at a competitive price, the NV7400 4TB's 7,400 MB/s reads, 4,000 TBW endurance, and full 5-year warranty make it a solid pick.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Maxio MAP1602A |
| Memory type | Biwin 3D TLC |
| DRAM cache | No |
| Sequential read | 7400 MB/s |
| Sequential write | 6500 MB/s |
| Random read IOPS | 900000 |
| Random write IOPS | 900000 |
| Endurance | 4000 TBW |
| MTBF | 1500000 |
| Warranty | 5 years |

## Performance

The 4TB Black Opal NV7400 is rated for 7,400 MB/s sequential reads and 6,500 MB/s sequential writes, with random performance rated up to 900,000 IOPS on both reads and writes, a touch below the 1,000,000 read IOPS of the smaller 1TB and 2TB capacities but still competitive with DRAM-equipped drives a tier above this one on price. Hitting near-flagship sequential numbers on a DRAM-less controller is the NV7400's main selling point; the Maxio MAP1602A-F3C leans on Host Memory Buffer and an SLC write cache to get there rather than dedicated onboard DRAM.

At 4TB, the SLC cache trade-off matters more in practice: large sustained transfers common at this capacity, like archiving a full game library or dumping a season's worth of 4K footage, are more likely to outrun the cache and see write speed taper toward native TLC speed than they would on a smaller drive used for lighter workloads. BIWIN doesn't publish the exact cache size for this model. For everyday use, the 4TB's read speed comfortably clears PS5's 5,500 MB/s minimum, and it's fast enough for DirectStorage-enabled PC games without being the bottleneck, while the large capacity means fewer game-library uninstall cycles.

## Endurance, TBW & Warranty

The 4TB Black Opal NV7400 carries a 4,000 TBW endurance rating, the highest in the series, backed by a 5-year warranty. At a typical consumer workload of 30 to 50GB written per day, 4,000 TBW takes roughly 220 to 365 years to exhaust, far beyond both the warranty term and the drive's realistic service life, and comfortably covers even heavier content-creation workloads writing 100GB-plus per day. BIWIN also rates the NV7400 at 1,500,000 hours MTBF, a population-level statistic describing expected failure rates across a large batch of drives rather than a promise for any single unit. The 5-year warranty matches what DRAM-equipped rivals in this price tier typically offer, so buyers aren't giving up warranty coverage for the DRAM-less design, only some steady-state performance headroom.

## Pros and Cons

**Pros:**

- 7,400 MB/s reads rival DRAM-equipped drives
- 4,000 TBW endurance, highest in the series
- Full 5-year warranty
- NVMe 2.0 controller support
- Lower power draw from DRAM-less design
- Largest capacity for a big game or media library
**Cons:**

- Random read IOPS lower than the 1TB and 2TB
- Write speed tapers once SLC cache fills
- No onboard DRAM for mapping tables
- Fewer independent long-term reviews than WD or Crucial
- No official Sony PS5 compatibility listing


## Verdict

The Black Opal NV7400 4TB suits buyers who want a large, near-flagship-speed drive for a big game library or media archive without paying DRAM-equipped-flagship prices, including PS5 owners and content creators with moderate daily write volumes. Buyers doing frequent very large sustained writes, like professional video editors working directly off the drive daily, should lean toward a DRAM-equipped drive that holds its write speed longer once the SLC cache fills. The Crucial P3 Plus 4TB and WD Blue SN580 4TB are the closest DRAM-less alternatives if brand reputation and a longer independent track record matter more than BIWIN's rated numbers. For bulk storage at a competitive price, the NV7400 4TB's 7,400 MB/s reads, 4,000 TBW endurance, and full 5-year warranty make it a solid pick.

## Frequently Asked Questions

### Is the BIWIN Black Opal NV7400 4TB good for gaming?

Yes. Its 7,400 MB/s read speed and PCIe 4.0 interface are fast enough for quick game installs and level streaming, and the drive supports DirectStorage on PC. The 4TB capacity is large enough to hold most of a modern game library without needing to uninstall titles to make room for new ones.

### Does the Black Opal NV7400 have a DRAM cache?

No. It's a DRAM-less design that uses Host Memory Buffer, borrowing a small portion of the host system's RAM over the PCIe interface to store mapping tables instead of an onboard DRAM chip. This lowers cost, power draw, and heat output compared to DRAM-equipped drives, at some cost to sustained random performance.

### Is the BIWIN Black Opal NV7400 4TB compatible with the PS5?

Sony requires PCIe 4.0 NVMe storage rated at 5,500 MB/s or faster reads, with dimensions fitting within 110 x 25 x 11.25mm including any heatsink. The NV7400 4TB's 7,400 MB/s rating clears that bar, but BIWIN does not appear on Sony's official approved-drive list, so buyers should treat it as spec-compatible rather than officially certified.

### What is the TBW endurance of the 4TB Black Opal NV7400?

The 4TB model is rated for 4,000 TBW, the highest endurance rating in the series, backed by a 5-year warranty. For a typical desktop or PS5 workload writing 30 to 50GB per day, that rating would take roughly 220 to 365 years to exhaust, far beyond both the warranty period and the drive's realistic useful life.

### Does the Black Opal NV7400 4TB need a heatsink?

It's a single-sided drive without an onboard DRAM chip, so it generates less heat than DRAM-equipped flagships and can run without a dedicated heatsink in most desktop cases with reasonable airflow. A motherboard M.2 heatsink or basic case airflow is still worth using for sustained heavy workloads to avoid thermal throttling on long writes.

### How does the 4TB compare to the 1TB and 2TB Black Opal NV7400?

The 4TB matches the 1TB and 2TB on sequential speed at 7,400 MB/s reads and 6,500 MB/s writes, but its random-read IOPS rating is slightly lower at 900K versus 1,000K on the smaller capacities. Endurance scales with capacity: 1,000 TBW at 1TB, 2,000 TBW at 2TB, and 4,000 TBW at 4TB.

### How does the BIWIN Black Opal NV7400 4TB compare to the Crucial P3 Plus or WD Blue SN580?

All three are DRAM-less PCIe 4.0 drives using Host Memory Buffer at the 4TB capacity, but the NV7400 is rated for higher sequential speeds on paper than either WD or Crucial's equivalent capacities. The SN580 and P3 Plus have longer independent review histories and stronger brand reliability track records, which is the main trade-off buyers make for BIWIN's higher rated numbers.

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Last updated: 2026-08-01. Source: https://ssdrive.net/biwin-black-opal-nv7400-4-tb