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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.
Creative professionals working with large media files will appreciate 2.7 GB/s reads and 2.7 GB/s writes. Transferring a 50GB DaVinci Resolve project takes ~19 seconds, while a full 100GB RAW photo session moves in ~37 seconds — fast enough to eliminate proxy workflows entirely.
4TB provides generous headroom for creative workflows — a working photo library, active video projects, and a game library all on one portable drive.
With 2,400 TBW, this is pro-grade endurance designed for sustained professional workloads. The 3-year warranty provides standard coverage for the expected lifespan of the drive.
At these speeds, thermal management matters. During extended writes, many compact drives throttle to 60-70% of peak speed after several minutes of continuous transfer.
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.
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.
Sequential read and write speeds — the numbers manufacturers advertise — matter most when transferring single large files. For everyday tasks like opening documents, browsing photos, running applications from the drive, or loading games, random 4K performance is more relevant. All NVMe-based external SSDs deliver random IOPS in the same general range, so the $Sabrent Rocket XTRM-Q Portable 4TB feels similarly responsive to other fast portables for daily use. The real differentiator shows up during large file transfers, where the $2,700 MB/s read speed pulls noticeably ahead of slower SATA-based externals.
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.