As an Amazon Associate I earn from qualifying purchases. We may earn a commission from qualifying purchases made through links on this page. Prices and availability are subject to change. We are reader-supported and independent — our rankings are based on an objective scoring rubric, not sponsorship.
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 is genuinely rare — most vendors cap at 2TB. The 4TB XTRM-Q is the enthusiast-choice for working 8K RED RAW footage in the field. Price is high but for revenue-grade video work that needs the speed, nothing else at this capacity competes.
See how it stacks up against competitors in our Thunderbolt External SSDs SSD comparison, or browse related SSD buying guides.
Click through to view the current price, availability, and full product details on the retailer's site.
Check on Amazon →We earn a commission from qualifying purchases made through these links. Prices and availability are subject to change — see the retailer's site for current pricing.
2.7 GB/s reads / 2.7 GB/s writes via Thunderbolt 3: the Sabrent Sabrent Rocket XTRM-Q 4TB is built for creators who cannot afford to wait on file transfers.
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.
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.
Sustained write workloads can push controller temperatures past 70°C, triggering thermal throttling that reduces throughput by 30-40%. Full metal enclosures manage heat better than slim plastic designs.
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 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 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 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 4TB | Sabrent Rocket Nano XTRM-Q |
|---|---|---|
| Read Speed | 2,700 MB/s | 3,000 MB/s |
| Write Speed | 2,700 MB/s | 2,800 MB/s |
| Capacity | 4TB | 1TB |
| Interface | Thunderbolt 3 | USB4 |
| Endurance | 2,400 TBW | 700 TBW |
| Score | 8.7/10 | 9.4/10 |
The Sabrent Rocket Nano XTRM-Q scores higher in our evaluation (9.4 vs 8.7/10). It also delivers faster reads (3,000 vs 2,700 MB/s).
For a detailed head-to-head comparison, see our full Sabrent Rocket XTRM-Q 4TB vs Sabrent Rocket Nano XTRM-Q comparison.
| Model | Capacity | Interface | Read | Write | TBW |
|---|---|---|---|---|---|
| Sabrent Rocket XTRM-Q 4TB | 4TB | Thunderbolt 3 | 2,700 | 2,700 | 2,400 |
| Sabrent Rocket Nano XTRM-Q | 1TB | USB4 | 3,000 | 2,800 | 700 |
| Corsair EX400U USB4 | 1TB | USB4 | 4,000 | 3,600 | 700 |
| LaCie Rugged SSD Pro 4TB | 4TB | Thunderbolt 3 | 2,700 | 1,900 | 2,400 |
Specs shown for the closest Thunderbolt External 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, 6:33 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, 6:33 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, 6:33 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.