For reference.
USB 3.0 (2008) - 5Gbit/s (Gen 1)
USB 3.1 (2013) - 10Gbit/s (Gen 2)
USB 3.2 (2017) - 20Gbit/s (Gen 2x2)
From Wikipedia: https://en.wikipedia.org/wiki/USB#Connector_type_quick_reference
This stick is indeed USB 3.1, so it should be twice as fast as a reputable USB 3.0 stick. The above speeds are theoretical (always) and shouldn't be used for comparison. If you're not interested why skip this next section.
Real-world speed is much less than theoretical because:
1) In practice, there's overhead in data transmission, protocol conversion, error correction and other processes that reduce the actual speed.
2) Factors like the quality of the USB stick, the efficiency of the controller, the speed of connected devices and the type of files being transferred can all impact the actual transfer speed. Side note here: I think we've all noticed that transferring multiple small files takes longer than transferring one big file.
3) Manufacturers often advertise the maximum potential speed, which may not always be achievable in real-world scenarios due to the complexities of data transfer.
So far, I bought 2 sticks, the 64 and 128 GB. I'm pleased with the value for money, the speed is acceptably high, but I don't see why the 32GB version costs 16 euros which is 2 more than the 64GB one.
Now, I have a USB 3.0 Interface on my PC Tower and a USB 3.1 PCI card that came with my motherboard, the Asus rampage V extreme. I benchmarked both sticks on both interfaces. Before I get to the difference between them though...
>>>> The 128GB Samsung Fit Plus has a READ speed in MB/s of ~396 / 400 as advertised and a WRITE speed of 65-ish, on BOTH USB 3.0 and USB 3.1 slots. Also, the 64GB version has the same READ speed but the WRITE is almost half at 35 MB/s. So, if you want to buy, OPT FOR THE 128GB! <<<<
Regarding my tests, the main difference between a USB 3.0 and USB 3.1 slot is the RND4K (IOPS), which is 150 more on USB 3.1. The two columns in the attached image are 2 separate tests of 1GiB or 4GiB.respectively. The speeds are consistent whether you transfer 1GiB or 4GiB.
What I'm wondering is why there is no significant speed difference across the USB 3.0 and USB 3.1 interfaces when, in theory, there should be. Strange.
Άφησε πρώτος το σχόλιό σου!