# Sabrent Rocket Q4 2TB — PCIe 4.0 QLC NVMe SSD (2026)

The Sabrent Rocket Q4 2 TB is where this QLC PCIe 4.0 lineup starts to perform — doubling the NAND die count over the 1 TB lifts writes to 3,600 MB/s and makes the drive genuinely competitive with early TLC PCIe 4.0 SSDs.

Quick answer: The Sabrent Rocket Q4 2 TB is the capacity where this QLC lineup becomes a reasonable value proposition. The 3,600 MB/s writes and 400 TBW endurance are competitive with early TLC PCIe 4.0 drives, and the DRAM cache ensures consistent random I/O performance. Against similarly-priced DRAM-less TLC alternatives like the WD Black SN770, the Sabrent holds its own on reads and may have an edge in random I/O, but TLC still offers better sustained write consistency. Choose the Q4 2 TB if you want DRAM cache and high capacity at a low price, and skip it if you regularly move files large enough to exhaust the SLC cache.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 2 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | Micron 96L QLC |
| DRAM cache | DDR4 |
| Sequential read | 4800 MB/s |
| Sequential write | 3600 MB/s |
| Random read IOPS | 350000 |
| Random write IOPS | 500000 |
| Endurance | 400 TBW |
| MTBF | 1800000 |
| Warranty | 5 years |

## Performance

Rated at 4,800 MB/s sequential reads and 3,600 MB/s sequential writes, with 350K random read IOPS and 500K random write IOPS, the 2 TB Q4 represents the performance sweet spot of the series. AnandTech's review of the Q4 platform found that the 2 TB capacity provides enough NAND parallelism to make QLC's write penalty manageable for typical desktop workloads. The pseudo-SLC cache absorbs approximately 40–80 GB of sustained writes before performance drops to native QLC speeds.

For gaming, the 2 TB Q4 delivers read performance that is indistinguishable from TLC PCIe 4.0 drives. Game load times, application launches, and OS boot performance are all PCIe 4.0-tier. The write speed of 3,600 MB/s is adequate for burst writes — game installations, application updates, and occasional file copies stay within the SLC cache for most sessions. The QLC write cliff only becomes relevant during sustained transfers exceeding 40–80 GB. The DDR4 DRAM cache ensures that random I/O performance remains consistent even under mixed workloads, giving the Q4 an advantage over DRAM-less TLC drives in the same price bracket.

## Endurance, TBW & Warranty

The Sabrent Rocket Q4 2 TB is rated for 400 TBW endurance with a five-year warranty requiring registration within 90 days (one year without). At 400 TBW, writing approximately 219 GB per day over five years would exhaust the rated endurance — adequate for a desktop gaming and general-use drive where typical daily writes are 30–60 GB. The drive supports S.M.A.R.T. health monitoring, and Sabrent provides Acronis True Image for drive migration. The five-year warranty is conditional on registration, which is worth doing immediately after purchase. The five-year warranty is conditional on registration within 90 days of purchase, which should be done immediately after installation. S.M.A.R.T. health monitoring allows tracking of endurance consumption over the drive's lifetime.

## Pros and Cons

**Pros:**

- 4,800 MB/s reads competitive with early TLC PCIe 4.0
- 3,600 MB/s writes — double the 1 TB model
- DDR4 DRAM cache for consistent random I/O
- 400 TBW endurance with 5-year warranty
- Mature Phison E16 controller
**Cons:**

- QLC write speeds drop after SLC cache fills (~40–80 GB)
- Native QLC writes sustain only 80–200 MB/s
- Warranty drops to 1 year without registration
- No included heatsink (optional)
- NVMe 1.3, not NVMe 1.4


## Verdict

The Sabrent Rocket Q4 2 TB is the capacity where this QLC lineup becomes a reasonable value proposition. The 3,600 MB/s writes and 400 TBW endurance are competitive with early TLC PCIe 4.0 drives, and the DRAM cache ensures consistent random I/O performance. Against similarly-priced DRAM-less TLC alternatives like the WD Black SN770, the Sabrent holds its own on reads and may have an edge in random I/O, but TLC still offers better sustained write consistency. Choose the Q4 2 TB if you want DRAM cache and high capacity at a low price, and skip it if you regularly move files large enough to exhaust the SLC cache.

## Frequently Asked Questions

### Is the Sabrent Rocket Q4 2TB good for gaming?

For game loading and general play, yes. The 4,800 MB/s reads and 350K random read IOPS deliver game load times equivalent to TLC PCIe 4.0 drives. The 3,600 MB/s write speed and 40–80 GB SLC cache handle typical game installation bursts. Where it falls short is during very large downloads (100+ GB day-one patches) where the cache can exhaust and installation slows. For most gamers, this is not a frequent enough issue to be a dealbreaker at the 2 TB capacity.

### Is the Sabrent Rocket Q4 2TB compatible with the PS5?

It falls short of Sony's recommendation. The PS5 suggests PCIe 4.0 NVMe drives with 5,500 MB/s or higher reads; the Q4 2 TB delivers 4,800 MB/s. The drive will physically fit and function, but it does not meet Sony's published recommended specification. For a PS5 expansion slot, consider the Sabrent Rocket 4 Plus 2 TB instead, which exceeds the recommended speed at 7,100 MB/s reads.

### Does the Sabrent Rocket Q4 2TB have DRAM?

Yes. The Rocket Q4 includes DDR4 DRAM for the flash translation layer mapping table. This is a significant advantage over DRAM-less drives in the same price range, as it ensures the controller can access mapping data without reading from the slower QLC NAND. For random I/O workloads — which includes OS operations, application launches, and game asset streaming — DRAM makes a measurable difference in responsiveness.

### What is the TBW endurance of the Sabrent Rocket Q4 2TB?

The 2 TB model is rated at 400 TBW (terabytes written), backed by a five-year warranty with registration. This works out to approximately 219 GB of writes per day over five years. For a 2 TB gaming and general-use drive, typical daily writes of 30–60 GB leave comfortable headroom. The endurance is lower than TLC alternatives (which typically offer 1,200–1,600 TBW at 2 TB), reflecting QLC's inherently lower write endurance per cell.

### How does the Sabrent Rocket Q4 2TB compare to the Corsair MP600 Core 2TB?

They are nearly the same drive. Both use the Phison E16 controller and Micron 96L QLC NAND. The Corsair is rated at 4,950/3,700 MB/s and the Sabrent at 4,800/3,600 MB/s — the difference is within normal variation between revisions. The Corsair includes a factory heatsink; the Sabrent offers one separately. Both carry five-year warranties, though Sabrent requires registration. Performance is functionally identical; choose based on price and whether you need the included heatsink.

### Is the Sabrent Rocket Q4 good for video editing?

For light to moderate editing, it works as a media storage drive where most operations are reads. The 4,800 MB/s reads handle footage playback and scrubbing well. However, the QLC write characteristics — particularly the cache exhaustion and subsequent drop to 80–200 MB/s — make it a poor choice as a scratch disk or for workflows involving constant large-file writes. For video editing, a TLC drive like the Sabrent Rocket 4 Plus is the better investment.

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Last updated: 2026-05-23. Source: https://ssdrive.net/sabrent-rocket-q4-2-tb