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Sabrent
Model: SB-XTRM-Q-4TB
| Capacity | 4TB |
| Interface | Thunderbolt 3 |
| Form Factor | External |
| Read Speed | 2,700 MB/s |
| Write Speed | 2,700 MB/s |
| Endurance (TBW) | 2,400 TB |
| Warranty | 3 Years |
A 4TB Thunderbolt 3 portable SSD — unusual intersection of capacity and Thunderbolt-class speed. The XTRM-Q 4TB is portable-class storage for working 8K RED RAW video editors. Premium pricing matches the niche use case.
See how it stacks up against competitors in our High-Speed Portable SSDs SSD comparison, or browse related SSD buying guides.
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The Sabrent Rocket XTRM-Q Portable 4TB from Sabrent pushes 2.7 GB/s reads and 2.7 GB/s writes over Thunderbolt 3 — purpose-built for creative professionals.
With 2.7 GB/s sequential reads and 2.7 GB/s sequential writes over Thunderbolt 3, this drive redefines what an external SSD can do. A 50GB 4K video project transfers in ~19 seconds; a 100GB RAW photo session moves in ~37 seconds.
At 4TB, this drive hits a sweet spot for photo and video libraries. You can store thousands of RAW images or hours of 4K footage without juggling multiple drives.
2,400 TBW endurance positions this as pro-grade — built for daily rewrite cycles without degradation. Backed by a 3-year warranty, this drive offers typical protection for its class.
Peak sequential speeds are impressive on paper, but sustained performance depends on thermal design. Without adequate cooling, expect throughput to taper during large continuous file transfers.
Thunderbolt 3 delivers the bandwidth needed for seamless playback and editing of high-bitrate media directly from the drive — no file transfer required.
The Sabrent Rocket XTRM-Q Portable 4TB targets users who need maximum throughput from an external drive. If you edit 4K or 6K video, move large project files between workstations, or work directly from external storage, the 2,700 MB/s read speed puts this drive in elite territory for a 4TB portable SSD.
At 4TB, this drive hits the sweet spot for users with substantial storage needs. Photo and video libraries, game collections, and professional project files all benefit from the headroom — you will not be juggling free space or swapping files between drives.
One important note: reaching the full 2,700 MB/s requires a Thunderbolt 4 or USB4 host port. On a standard USB 3.2 Gen 2 port, the drive still works perfectly but negotiates down to 10 Gbps. Most laptops from 2022 onward include a compatible port on premium models, but verify your hardware before expecting peak performance.
On paper, the Sabrent Rocket XTRM-Q Portable 4TB delivers 2,700 MB/s reads and 2,700 MB/s writes. In practice, a 50GB file — a typical 4K video project, a large game install, or a full photo shoot — transfers in ~19 seconds. A 100GB batch of raw files moves in ~37 seconds. For users who regularly shuttle large files, these transfer times are a meaningful productivity improvement over slower SATA-based externals that take 3-5x longer for the same tasks. Note: those numbers describe large sequential transfers — everyday tasks (opening documents, app launches, game loads) feel equally fast across all NVMe portables because random 4K performance is similar drive-to-drive.
At 2,700 MB/s, the controller generates significant heat during extended writes. Sustained sequential transfers of 200GB or more can push controller temperatures past 70°C, triggering thermal throttling that reduces throughput by 20-35%. The aluminum enclosure helps dissipate heat, but for sustained workloads, expect speeds to settle below the rated peak after several minutes of continuous writing.
The Sabrent Rocket XTRM-Q Portable 4TB is rated for 2,400 TBW (terabytes written) endurance. To put that in perspective: if you write 50GB per day — an aggressive daily workload for most users — the drive would take approximately 132 years to reach its endurance limit. For typical use patterns involving backups, file transfers, and game storage, the 2,400 TBW rating provides comfortable headroom well beyond the 3-year warranty period.
| Spec | Sabrent Rocket XTRM-Q Portable 4TB | Samsung T9 Portable SSD |
|---|---|---|
| Read Speed | 2,700 MB/s | 2,000 MB/s |
| Write Speed | 2,700 MB/s | 1,950 MB/s |
| Capacity | 4TB | 1TB |
| Interface | Thunderbolt 3 | USB 3.2 Gen 2x2 |
| Endurance | 2,400 TBW | 600 TBW |
| Score | 8.7/10 | 9.6/10 |
The Samsung T9 Portable SSD scores higher in our evaluation (9.6 vs 8.7/10). While the Sabrent Rocket XTRM-Q Portable 4TB has lower scoring, it may offer advantages in other areas like endurance. Review the full specifications above before deciding.
For a detailed head-to-head comparison, see our full Sabrent Rocket XTRM-Q Portable 4TB vs Samsung T9 Portable SSD comparison.
| Model | Capacity | Interface | Read | Write | TBW |
|---|---|---|---|---|---|
| Sabrent Rocket XTRM-Q Portable 4TB | 4TB | Thunderbolt 3 | 2,700 | 2,700 | 2,400 |
| Samsung T9 Portable SSD | 1TB | USB 3.2 Gen 2x2 | 2,000 | 1,950 | 600 |
| Samsung T9 Portable 4TB | 4TB | USB 3.2 Gen 2x2 | 2,000 | 2,000 | 2,400 |
| Crucial X10 Pro Portable 4TB | 4TB | USB 3.2 Gen 2x2 | 2,000 | 2,000 | 2,400 |
Specs shown for the closest High-Speed Portable SSDs alternatives. Full comparison table available on the compare page.
The Sabrent Rocket Nano XTRM-Q comes in multiple capacities. Smaller sizes save money if you do not need the headroom; larger sizes drop the cost-per-TB for media libraries and Time Machine backups.
Sabrent
Price as of Jul 3, 2026, 4:46 AM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Sabrent
Price as of Aug 3, 2026, 8:44 PM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Sabrent
Price as of Aug 3, 2026, 8:44 PM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Sabrent
Price as of Aug 3, 2026, 8:44 PM. Prices and availability are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.