The new USB 3.1 is commonly referred to as SuperSpeed Plus,the specifications for USB 3.1 were finalized nearly a year and a half ago.It promises even faster transfer rates than USB 3.0 and with hardware now trickling down to end-users, we’re finally getting to see what it can do in the real world.
The theoretical effective transfer rate of USB 3.1 is between 500MB/sec to 1.21GB/sec which is real fast considering the older versions.
USB 3.1 offers double the signaling speed at 10Gbps, and it also modifies the line encoding scheme from 8b/10b to 128n/132b, what this really means is that only four bits out of every 132 are set aside for encoding overhead versus two out of every 10.
The theoretical effective transfer rate of USB 3.1 is between 500MB/sec to 1.21GB/sec which is real fast considering the older versions.
Using a prototype USB 3.1 enclosure loaded with two Samsung 840 EVO SSDs in RAID 0 and an Asus Z97-A/USB 3.1 (Asus also supplied the enclosure and drives), The Tech Report set out to see just what sort of numbers they could squeeze out of the setup.Using CrystalDiskMark to measure sequential read and write speed as well as 4K random reads / writes, the publication recorded sequential read speeds of 781.2MB/sec and writes of 797.8MB/sec. In the same test, USB 3.0 scored just 446.5MB/sec and 448.6MB/sec, respectively.
4K random reads checked in at 35.8MB/sec with writes scoring 79.6MB/sec, compared to USB 3.0 read / write speeds of 26.2MB/sec and 27.3MB/sec.
So there’s plenty of speed associated with USB 3.1. Motherboards that can support these specifications, like the one used in TTR’s testing, are already available for purchase. However finding an enclosure to support SuperSpeed Plus, may take some time,but it won't be too long before they start popping up at your favourite online store.
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