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20 lis 2019 · USB 2.0 - High Speed, USB 3.0, and USB 3.1 Max Polling Rate: 8000 Hz *Keep in mind, however, that there are other factors that can impact peripheral performance, such as your operating system, and device drivers.
In USB 2.0 the polling interval was 0.125ms, so the best possible latency for the host to read some data from the device was 0.125ms. I'm hoping for reduced latency in USB 3.0 devices, but I'm finding it hard to learn what the minimum latency is.
Usb 2.0 has a latency of about 125 microseconds. Unlike 2.0, usb 3.0 is not a shared-bus system. Instead it uses a point-to-point link between the host and each device which can help decrease the latency by a significant amount (in terms of multiples, still not noticeable at all).
14 lip 2014 · However, you should check to see that your laptop (Windows device) actually classifies the USB 3.0 connection as a "super" data rate capable connection. There are four USB specs: 1.0, 1.1, 2.0, and 3.0. But to confuse things, each USB spec has more than one data rate assigned to it.
29 lis 2017 · According to this article, neither 2.0 or 3.0 USB Flash drives even come close to their advertised speed; however, it does summarize that USB 3.0 reliably comes in at speeds nearly three times as fast as USB 2.0.
15 sty 2018 · Which external connection has the highest data throughput with respect to the headers used? I would appreciate a slowest to fastest list including USB 2.0, USB 3.0, FireWire 400, FireWire 800, eSAT...
20 cze 2012 · All of the sudden, USB 3.0 is down another 100 MB/s. Even at 400 MB/s, though, we're still looking pretty good compared to USB 2.0's sub-40 MB/s performance. Although those figures help...
