# Sabrent Rocket 4 Plus 8TB Review — The Highest-Capacity Consumer M.2 NVMe SSD (2026)

The Sabrent Rocket 4 Plus 8 TB is the drive you buy when four terabytes is not enough — it crams 8 TB of TLC NAND onto a single double-sided M.2 2280 PCB using a unique NAND configuration that no other Phison E18 drive at this capacity replicates.

Quick answer: The Sabrent Rocket 4 Plus 8 TB is a purpose-built drive for a narrow audience: professionals and enthusiasts who need 8 TB of fast NVMe storage on a single M.2 slot and are willing to pay a significant premium for the density. Content creators managing 8K raw footage, researchers working with large datasets, and gamers who refuse to uninstall anything will find the capacity liberating. The TLC NAND and 5,600 TBW endurance ensure the drive handles write-heavy workloads without the speed cliffs that plague QLC alternatives. Skip it if capacity per dollar is your primary concern — two 4 TB drives in RAID cost less and perform faster — or if you want the best possible Gen4 performance, in which case the 4 TB Rocket 4 Plus or the WD Black SN850X 8 TB are better tuned. The Rocket 4 Plus 8 TB's legacy is that it proved 8 TB was possible on a consumer M.2 form factor; the fact that it is now one of three such drives on the market is a testament to that achievement.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 8 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5018-E18 |
| Memory type | Kioxia BiCS5 112L TLC |
| DRAM cache | SK Hynix DDR4 Cache |
| Sequential read | 7000 MB/s |
| Sequential write | 6000 MB/s |
| Random read IOPS | 710000 |
| Random write IOPS | 1000000 |
| Endurance | 5600 TBW |
| MTBF | 1600000 |
| Warranty | 5 years |

## Performance

The Sabrent Rocket 4 Plus 8 TB is rated for 7,000 MB/s sequential reads and 6,000 MB/s sequential writes, with random performance of up to 700,000 IOPS reads and 1,000,000 IOPS writes. These figures are notably lower than the 4 TB variant's 7,100/6,600 MB/s ratings — a consequence of the Kioxia BiCS5 NAND's slower interface speed and firmware that was not fully tuned for the 64-die configuration. Independent reviewers at StorageReview and Tom's Hardware confirmed the performance gap, with the 8 TB model falling roughly 10 to 15 percent behind the 4 TB in some sequential and mixed workloads, and dropping more aggressively under sustained heavy writes.

In real-world use, the Rocket 4 Plus 8 TB sustains approximately 5,000 to 5,300 MB/s sequential writes in large transfers before any thermal or cache limitations appear — still an enormous amount of throughput that exceeds what most PCIe 3.0 drives can manage at peak. The Phison E18's dynamic pSLC cache is generously sized given the sheer volume of NAND available, and the drive maintains strong post-cache write speeds north of 1,500 MB/s in direct-to-TLC mode. Thermally, the 8 TB model runs surprisingly cool for its density. Neowin measured peak temperatures of 50 to 56 degrees Celsius under sustained sequential load, well below the E18's 84-degree throttle point, and observed no performance drop from thermal throttling during their test suite. This is partly due to the BiCS5 NAND's lower power draw per die compared to B47R and partly due to Sabrent's PCB design spreading heat across both sides of the board.

For the PS5, the 8 TB Rocket 4 Plus with the PS5-specific heatsink returns approximately 6,200 to 6,500 MB/s in the console's built-in speed test — comfortably above Sony's 5,500 MB/s minimum. The custom cooling plate design is effective but means the PS5's expansion bay cover must be removed and replaced with Sabrent's plate, which changes the console's appearance. For PC gaming, the 8 TB capacity is overkill for most users — a 2 TB or 4 TB drive costs far less per gigabyte and performs better — but for content creators managing large raw video libraries, 3D asset collections, or research datasets, the ability to keep everything on a single fast NVMe volume without spanning across multiple drives is the entire point.

## Endurance, TBW & Warranty

Sabrent backs the Rocket 4 Plus 8 TB with a 5-year limited warranty conditional on product registration within 90 days of purchase, reverting to a 1-year warranty for unregistered drives. The endurance rating is 5,600 TBW — double the 4 TB variant's 2,800 TBW and among the highest total TBW figures available on any consumer SSD. At 5,600 TBW, the drive is rated to absorb approximately 3 TB of writes per day for the full warranty period, which exceeds even professional video editing and data processing workloads. At a typical 30 GB/day consumer pace, endurance extends beyond 500 years. The TBW scales linearly across the lineup: 700 TBW for 1 TB, 1,400 TBW for 2 TB, and 2,800 TBW for 4 TB. The MTBF, while not prominently published by Sabrent, is rated at 1.6 million hours, consistent with other Phison E18 implementations. Sabrent provides the Rocket Control Panel software for drive health monitoring and firmware updates, though reviewers have noted it is aesthetically basic compared to Samsung Magician or WD Dashboard. The Rocket 4 Plus does not include hardware-based AES-256 encryption, a limitation shared across the Phison E18 platform.

## Pros and Cons

**Pros:**

- 8 TB of TLC NAND on a single M.2 2280 — highest consumer capacity available
- 5,600 TBW endurance with 5-year warranty (with registration)
- Excellent thermals — stays under 56°C without throttling
- PS5 compatible with custom heatsink SKU
- DRAM cache ensures consistent performance under mixed workloads
- Phison E18 platform is mature, stable, and widely supported
**Cons:**

- Slower than 4 TB variant due to BiCS5 NAND and firmware limitations
- Extremely expensive — approximately $1,000 at retail
- 5-year warranty requires product registration within 90 days
- Double-sided PCB incompatible with many thin laptops
- No hardware encryption support
- Corsair MP600 PRO NH 8 TB offers identical specs at a lower price


## Verdict

The Sabrent Rocket 4 Plus 8 TB is a purpose-built drive for a narrow audience: professionals and enthusiasts who need 8 TB of fast NVMe storage on a single M.2 slot and are willing to pay a significant premium for the density. Content creators managing 8K raw footage, researchers working with large datasets, and gamers who refuse to uninstall anything will find the capacity liberating. The TLC NAND and 5,600 TBW endurance ensure the drive handles write-heavy workloads without the speed cliffs that plague QLC alternatives. Skip it if capacity per dollar is your primary concern — two 4 TB drives in RAID cost less and perform faster — or if you want the best possible Gen4 performance, in which case the 4 TB Rocket 4 Plus or the WD Black SN850X 8 TB are better tuned. The Rocket 4 Plus 8 TB's legacy is that it proved 8 TB was possible on a consumer M.2 form factor; the fact that it is now one of three such drives on the market is a testament to that achievement.

## Frequently Asked Questions

### Is the Sabrent Rocket 4 Plus 8TB compatible with the PS5?

Yes, the Sabrent Rocket 4 Plus 8 TB is PS5-compatible following Sony's September 2023 firmware update that raised the M.2 expansion slot capacity limit from 4 TB to 8 TB. The PS5-specific SKU (SB-RKT4P-PSHS-8TB) includes a custom cooling plate that replaces the console's expansion bay cover and keeps the drive within Sony's thermal requirements. The rated 7,000 MB/s sequential read speed exceeds Sony's 5,500 MB/s minimum. Independent testing measured approximately 6,200 to 6,500 MB/s in the PS5's built-in speed test.

### Why is the 8TB Rocket 4 Plus slower than the 4TB version?

The 8 TB model uses Kioxia BiCS5 112-layer TLC NAND instead of the Micron 176-layer B47R TLC found in the 1 TB to 4 TB variants. This switch was necessary because the higher-density BiCS5 packages allowed Sabrent to fit 64 NAND dies (8 TB) onto a double-sided M.2 2280 PCB. However, BiCS5 is a slower interface than B47R, and the Phison E18 firmware was not fully optimized for the 64-die configuration, resulting in roughly 10 to 15 percent lower throughput in some workloads compared to the 4 TB model.

### What is the TBW endurance of the Sabrent Rocket 4 Plus 8TB?

The Rocket 4 Plus 8 TB is rated for 5,600 TBW of endurance over its 5-year warranty period, equivalent to approximately 3 TB of writes per day. This doubles the 4 TB variant's 2,800 TBW and is among the highest total endurance figures available on any consumer SSD. The endurance scales linearly across the lineup: 700 TBW for 1 TB, 1,400 TBW for 2 TB, 2,800 TBW for 4 TB, and 5,600 TBW for 8 TB.

### Does the Sabrent Rocket 4 Plus have a DRAM cache?

Yes, the Rocket 4 Plus 8 TB includes 2 GB of SK Hynix DDR4-3200 DRAM as a dedicated cache buffer. The DRAM stores the flash translation layer mapping table and ensures consistent random read and write performance. The 1 TB and 2 TB variants include 1 GB of DRAM, while the 4 TB model also uses 2 GB. This is not a DRAM-less HMB design.

### Does the Sabrent Rocket 4 Plus include a heatsink?

The standard Rocket 4 Plus 8 TB (SB-RKT4P-8TB) does not include a heatsink. Sabrent offers a separate PS5-specific SKU (SB-RKT4P-PSHS-8TB) that includes a custom cooling plate designed to replace the PS5's expansion bay cover. For PC use, a motherboard M.2 cover or passive heatsink is sufficient — the drive runs cool for its density, peaking at 50 to 56 degrees Celsius under sustained load.

### How does the Sabrent Rocket 4 Plus 8TB compare to the WD Black SN850X 8TB?

The WD Black SN850X 8 TB is slightly faster across most metrics — 7,200/6,600 MB/s versus the Sabrent's 7,000/6,000 MB/s — thanks to WD's in-house controller and more mature firmware. The SN850X also offers better sustained write performance and typically costs slightly more. Both drives use TLC NAND and carry 5-year warranties. The Sabrent was first to market and has slightly better thermals, but the SN850X is the objectively better performer. Choose the Sabrent if it is meaningfully cheaper on sale; choose the WD for peak performance.

### Is the Sabrent Rocket 4 Plus 8TB worth the price?

For most users, no — a 4 TB PCIe 4.0 drive costs roughly one-quarter to one-third as much per gigabyte and performs faster. The 8 TB Rocket 4 Plus is worth its premium only for users who specifically need 8 TB in a single M.2 slot and cannot use two separate drives. Content creators working with 8K raw video, researchers with large datasets, and enthusiasts building maximum-density small-form-factor systems are the target audience. For everyone else, two 4 TB drives in RAID or a 4 TB NVMe plus a SATA SSD for bulk storage offer far better value.

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Last updated: 2026-05-17. Source: https://ssdrive.net/sabrent-rocket-4-plus-8-tb