# Sabrent Rocket NVMe 4.0 1TB — PCIe 4.0 TLC NVMe SSD (2026)

The Sabrent Rocket NVMe 4.0 1 TB was one of the first PCIe 4.0 consumer SSDs on the market, pairing Phison's E16 controller with Toshiba 96L TLC NAND and an unusually high 1,800 TBW endurance rating for a 1 TB drive.

Quick answer: The Sabrent Rocket NVMe 4.0 1 TB is a first-generation PCIe 4.0 TLC drive that has aged well thanks to its high endurance and consistent performance. The 5,000/4,400 MB/s speeds are no longer top-of-market, but they are fast enough for gaming and general desktop use, and the TLC NAND provides far better write consistency than QLC alternatives at similar prices. The standout spec is the 1,800 TBW endurance — triple what many competing 1 TB drives offer. For builders who want proven TLC reliability, DRAM cache, and high endurance at a price that undercuts newer E18-based drives, the Rocket NVMe 4.0 1 TB remains a solid choice.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | Toshiba 3D TLC |
| DRAM cache | SK Hynix DDR4 |
| Sequential read | 5000 MB/s |
| Sequential write | 4400 MB/s |
| Random read IOPS | 750000 |
| Random write IOPS | 750000 |
| Endurance | 1800 TBW |
| MTBF | 1.7 |
| Warranty | 5 years |

## Performance

Rated at 5,000 MB/s sequential reads and 4,400 MB/s sequential writes, with 750K random read IOPS and 750K random write IOPS, the Rocket NVMe 4.0 1 TB was flagship-tier performance when it launched in 2019. Today, these numbers sit in the middle of the PCIe 4.0 pack — faster than QLC drives but well below the E18-based Rocket 4 Plus at 7,100/7,000 MB/s.

The TLC NAND is the key differentiator over Sabrent's Q4 series. After the pseudo-SLC cache exhausts — which takes roughly 80–120 GB on the 1 TB model — native TLC writes sustain at approximately 1,000–1,500 MB/s. This is a dramatically smaller performance cliff than QLC drives face, and for most desktop workloads the cache never fully exhausts. Reviews from Guru3D and eTeknix confirm consistent performance across synthetic benchmarks and real-world transfer tests. The 750K random read IOPS and 750K random write IOPS are symmetric and competitive — many drives bias strongly toward one direction. For mixed read/write desktop workloads, the balanced IOPS profile delivers consistent performance across different usage patterns without surprising bottlenecks.

## Endurance, TBW & Warranty

The Sabrent Rocket NVMe 4.0 1 TB carries an 1,800 TBW endurance rating — notably high for a 1 TB drive and far exceeding the 600–800 TBW typical of TLC PCIe 4.0 drives at this capacity. The five-year warranty requires product registration within 90 days (one year without). At 1,800 TBW, you can write approximately 986 GB per day for five years, which is an extraordinary amount of write headroom. The 1.7 million hour MTBF rating is also provided. This endurance level means the drive can serve as a boot drive, game library, or even a moderate-duty scratch disk without endurance concerns throughout the warranty period.

## Pros and Cons

**Pros:**

- 5,000 MB/s reads, 4,400 MB/s writes
- Toshiba 96L TLC NAND for consistent writes
- 1,800 TBW endurance — exceptionally high for 1 TB
- SK Hynix DDR4 DRAM cache
- Single-sided PCB fits all M.2 slots
- Proven Phison E16 platform with mature firmware
**Cons:**

- Slower than E18-based drives (Rocket 4 Plus)
- 28 nm E16 controller runs warmer than 12 nm designs
- NVMe 1.3, not NVMe 1.4
- Warranty drops to 1 year without registration
- No included heatsink (optional)
- No hardware AES encryption


## Verdict

The Sabrent Rocket NVMe 4.0 1 TB is a first-generation PCIe 4.0 TLC drive that has aged well thanks to its high endurance and consistent performance. The 5,000/4,400 MB/s speeds are no longer top-of-market, but they are fast enough for gaming and general desktop use, and the TLC NAND provides far better write consistency than QLC alternatives at similar prices. The standout spec is the 1,800 TBW endurance — triple what many competing 1 TB drives offer. For builders who want proven TLC reliability, DRAM cache, and high endurance at a price that undercuts newer E18-based drives, the Rocket NVMe 4.0 1 TB remains a solid choice.

## Frequently Asked Questions

### Is the Sabrent Rocket NVMe 4.0 1TB good for gaming?

Yes. The 5,000 MB/s read speed and 750K random read IOPS deliver game load times that are indistinguishable from faster PCIe 4.0 drives in real-world testing — the difference between 5,000 MB/s and 7,100 MB/s reads does not translate to noticeable game load improvements. At 1 TB, you can fit the OS plus 6–10 large games. For gaming, the limiting factor is capacity rather than speed.

### Is the Sabrent Rocket NVMe 4.0 1TB compatible with the PS5?

It falls below Sony's recommended specification of 5,500 MB/s reads. The Rocket NVMe 4.0 delivers 5,000 MB/s — 500 MB/s short of the recommendation. It will physically fit as a bare M.2 2280 drive and will function in the PS5, but Sony suggests faster drives for optimal performance. The gap is relatively small and may not be noticeable in most games, but if you are buying specifically for PS5, the Rocket 4 Plus (7,100 MB/s) is the better Sabrent option.

### Does the Sabrent Rocket NVMe 4.0 have DRAM?

Yes. It uses SK Hynix DDR4 DRAM for the flash translation layer mapping table. This is a dedicated hardware DRAM cache — not a host memory buffer (HMB) implementation that relies on system RAM. The DRAM ensures the controller can access mapping data at full speed regardless of what else is happening on the system, which is important for maintaining consistent random I/O performance.

### What is the TBW endurance of the Sabrent Rocket NVMe 4.0 1TB?

The 1 TB model is rated for 1,800 TBW (terabytes written), which is exceptionally high for a 1 TB drive. This equals approximately 986 GB of writes per day for five years — roughly 50 times what a typical desktop user writes daily. Even as a heavy-duty scratch disk for video editing or database work, the endurance is unlikely to be exhausted within the warranty period. This is one of the highest endurance ratings available on any 1 TB consumer SSD.

### How does the Sabrent Rocket NVMe 4.0 compare to the Rocket 4 Plus?

The Rocket 4 Plus is the newer, faster successor. It uses the Phison E18 controller (12 nm) versus the E16 (28 nm), and delivers 7,100/7,000 MB/s versus 5,000/4,400 MB/s. The Rocket 4 Plus also supports NVMe 1.4 instead of 1.3. However, the original Rocket NVMe 4.0 has a higher endurance rating at 1 TB (1,800 TBW vs. 700 TBW) and is typically priced lower. For budget-conscious builders who value endurance over peak speed, the original Rocket NVMe 4.0 is the better value.

### Does the Sabrent Rocket NVMe 4.0 1TB need a heatsink?

Recommended but not strictly necessary for light use. The Phison E16 controller is built on a 28 nm process that generates more heat than newer 12 nm designs. Under sustained writes, temperatures can reach 70 degrees Celsius or higher. If your motherboard has an integrated M.2 heatsink, it is sufficient. Sabrent offers an optional heatsink variant, and there is also a version without any heatsink for use with motherboard-provided cooling.

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Last updated: 2026-05-17. Source: https://ssdrive.net/sabrent-rocket-nvme-40-1-tb