What the U35 Bolt+ Is and Why Its Speed Matters
The Oyen U35 Bolt+ is a USB4 (80 Gbps) portable SSD that targets creators and power users who need exceptionally high portable SSD performance for tasks like 8K video editing, heavy VFX work, and large media backups, promising up to 6,000 MB/s transfer speeds that rival internal laptop storage. In benchmark testing on a MacBook Pro with an M5 Max chip and proper USB4 support, it not only met those numbers but exceeded them, setting a new mark for the fastest SSD performance recorded outside a built‑in system drive. This positions the U35 Bolt+ as a leading contender for users searching for the fastest SSD 2026 contenders and makes it especially interesting for anyone whose workflow is bottlenecked by external storage bandwidth. However, that headline speed is only part of the story, and understanding the trade-offs is essential before buying.
Design, Build, and Portability in a Compact Shell
Physically, the U35 Bolt+ is a compact, rectangular brick that favors function over looks. Its design is similar in footprint to the Glyph EX40, though the aesthetic is plainer, with a light gray finish that many will find utilitarian rather than stylish. A thin silicone "bumper" wraps the edge of the drive, but reviewers describe it as floppy and easy to remove, which limits its usefulness as real drop protection. Beneath that is a thin silicone layer on all six sides, broken by strips of aluminum that add grip more than armor. The single 80 Gbps USB‑C port is deeply recessed, and Oyen includes a short, high-spec USB4/240 W cable well suited to laptop use on the road. As a piece of high-speed storage, the U35 Bolt+ is compact and practical, though users expecting rugged styling may be underwhelmed.
Peak Benchmark Numbers: Fastest Portable SSD Performance on Record
On a modern MacBook Pro with an M5 Max processor and full USB4 support, the U35 Bolt+ delivers what Oyen promises and more. Out of the box, tests recorded 6,064.4 MB/s read and 6,278.8 MB/s write speeds, almost double the Glyph EX40 and more than 1,000 MB/s faster than the OWC Envoy Ultra, the prior top performers in compact SSD comparison charts. According to PetaPixel, “only the internal SSD of the MacBook Pro beats those speeds,” which makes the U35 Bolt+ a standout candidate for anyone evaluating the fastest SSD 2026 options. Importantly, repeated tests after filling the drive to capacity and then reformatting showed that, when cool, performance remained consistently high. The onboard controller appears capable of sustaining these peak numbers in short to moderate bursts, which is excellent news for workflows built around quick transfers and rapid on‑set backups.
The Catch: Thermal Throttling and Real-World Use Cases
The impressive benchmarks hide a major caveat: under sustained, high-intensity workloads, the U35 Bolt+ thermally throttles hard. After the drive was filled to its 4 TB capacity in testing, write speed plunged to 2,244.5 MB/s while read speed dipped to 5,585.3 MB/s, amounting to a 63% drop in write performance. The enclosure never felt more than mildly warm to the touch, suggesting the controller is conservative about temperature, and the passive "cooling core" takes time to shed heat. That means long, continuous transfers or extended editing sessions can see portable SSD performance fall well below headline numbers until the drive rests for roughly 20 minutes. The good news: even in this throttled state, it still handled demanding ProRes 422 HQ 8K and 12K playback in testing, so many photo and video workflows will remain well within its effective performance envelope.
Pricing, Value, and How It Stacks Up Against Rivals
For buyers weighing high-speed storage options, the U35 Bolt+ lands in a comparatively attractive price bracket given its performance. The 4 TB model is listed at USD 969 (approx. RM4,470), while the 2 TB and 1 TB versions come in at USD 599 (approx. RM2,760) and USD 459 (approx. RM2,120) respectively. Competing portable and Thunderbolt SSDs with similar capacities often cost more yet deliver lower speeds, such as models from Samsung and SanDisk, alongside pricier Thunderbolt 5 drives from brands like LaCie and OWC. In that context, the U35 Bolt+ offers a compelling balance of cost and peak throughput for users with recent USB4 or Thunderbolt 5‑class ports. The trade-off is clear: unbeatable top-end portable SSD performance in short bursts, offset by thermal limitations under sustained load. If your workflow is spiky rather than constant, that compromise may be well worth it.
