It’s also worth noting that Sabrent makes XTRM-Q drives up to 16TB in size if you need the extra space.
One credible competitor is the Sabrent Rocket XTRM-Q, a less robust design that undercuts the pricing of the OWC Envoy Pro FX by at least $200 for the 2TB model. But those expectations need to be adjusted if you’re using it on an older or slower performance system, or you have the 250GB model. In the right conditions with a powerful system, the Envoy Pro FX is probably the fastest external drive we’ve seen so far. However, with this feature active, some care needs to be taken when disconnecting the drive to avoid corrupting it. Once write caching was enabled, a speed of 2,336MB/s was possible on the 480GB drive. Without caching enabled, write speeds were reduced to around 1,000MB/s, though read speeds were still close to the theoretical 2,700MB/s limits. We also discovered that on our Z170 chipset motherboard and Core i5-6500 test platform, this was insufficiently powerful enough to feed the Thunderbolt bus on the 480GB capacity review drive without enabling write caching. This decrease is due to the lower number of NAND modules that reduces the throughput when writing and is an inherent problem with smaller capacity SSDs and the NAND packages they use. Where on each capacity, the read speed holds up well, on the 240GB model, the write performance is reduced to around just 1,145MB/s. Using a MacBook Pro 16 M1, the best speed achieved was 2,044 MB/s write 2506 MB reads on the 2TB capacity drive. OWC has published a collection of benchmarks that outline the speeds that can be achieved with optimal configurations.
(Image credit: Mark Pickavance) PerformanceĮxactly what speeds you can realistically expect depends on numerous factors, including the performance of your PC/Mac, if you connect with Thunderbolt or USB, device contention from other hardware on that bus, and the Envoy Pro FX the specific model.
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