Vansuny 64GB USB 3.1 Flash Drive - 400MB/s High-Speed Portable SSD Thumb Drive with Retractable Metal Design - Perfect for Data Storage, File Transfer, and Backup (Work, School, Travel)

Fast, fast, fast! See my Crystal Disk Mark shots. First was formatted NTFS. Next is in exFAT. Not too big of difference. I threw in my SK hynix Gold S31 500GB SATA Gen3 2.5 inch Internal SSD that is rated up to 560MB/S. Lastly, I added for LOL, my 500GB Samsung 970 EVO Plus NVMe M.2 SSD. All three drives were on the same computer while benchmarking. The Vansuny USB 3.1 Flash Drive will copy large files at 350+ MB/s without slowing down. I tried a couple read and write transfers up to nearly 30 GB without any slowing down due to running out of a tiny high speed drive cache like a lot of other manufacturers drives do. This Vansuny drive acts more like SATA 3, 600MB/s SSD desktop drives rather than a USB flash/thump drive. You may find another drive as fast in sequential transfers, but they will lack in the random read/write speed like in the real world. File systems are random, not perfect sequential transfers for showing off fast benchmarking numbers. I noticed they have a 500GB version available again. I would have grabbed it if available at the time of my purchase.The one con is the drive does not have a premium feel to it. Almost cheap in feel despite being made from aluminum alloys. I care about speed first, then price and lastly does it feel like Apple made a flash "i Drive" !!!One last thing, go into Windows Device Manager and put the drive into performance mode, not fast disconnect mode that is on by default when new USB drives are first plugged into Windows. If I read one more review slamming a drive for being slow and knowing they are clueless to what they write, I will scream! LOLI put the drive in my Sony Z9K TV that supports Android TV to add extra system memory storage. Everything I transferred over did so very quickly compared to the very old 32 gig USB drive I tried to use.Unfortunately the Sony being brand new didn't play well with USB memory devices and keeps restarting and having issues trying to read the drive.The drive itself is very fast and fine, the TV is having the problems. It was cheap enough I will use it on something that works well with external memory devices and be happy.IF you have new Sony top line TV with Android keep this in mind, you might have problems using any USB drive for system memory till they update the firmware.UPDATE: Someone said you go to Remote setup, and change RS232 from HDMI to Serial and then decent memory USB drives will work.It fixed this drive in my Z9K and now the TV starts up fine and uses the drive as expanded system memory like it should.I also activated Developer Mode so I could force it to allow more apps to use the external memory from this USB stick and it is very fast.I stumbled upon this 64GB flash drive on Amazon and I'm sure glad I did. It's literally the fasted USB flash drive I've ever used, even comparing to the Sandisk Extreme line.I tested by installing a full Linux system (not just an ISO) to it, which it accomplished in less than 2 minutes. This is a good test in that it has both large files (>50MB) and much smaller files. Total files exceed 150,000. Total files written around 5GB.I will withhold comments on reliability and durability till I have more experience, but I'm super impressed already!I'll test more but may add this mfg to my arsenal of flash drives.I work for information technology(IT) position and this drive is my super drive. we had SanDisk with the same software installed on it and this drive is way faster. 400mb/s compared to 150mb/s. This drive legit sames me so much time. About 10m for each image, and I can do 4-10 computers a day. This drive saves me 40 -1.5 hours in saved time. The quicker I'm done, the quicker I go home. Read and write speed essentially is pointless if it overheats. This drive does not even for a second. The metal body is AMAZING. I never had a USB drive that actually is cool during intense read and write cycles. During the boot menu, this drives says JMICRON. This drive is solid. It saves me time and was cheap for how fast it is and how many drivers i can store. Amazing.As fast as advertised. It is much bigger than I need but the price is still right!File photo snd video storageFirst the good. The Read and Write speeds were close to advertised. Loaded Windows 10 on it and in no Time Windows was on my laptop. The Bad. The button that pushes the USB out feels a little weak and the build quality feels slightly cheap but for 16$ I was not expecting much in the build quality department. Bottom line I would recommend this over more expensive USB’s It’s faster then the Sandisk SSD USB I used to have and it cost allot more.Me Duro un mes y ya no funciono, creo que me toco uno de mala calidad.Just like a SSD in the form of a USB driveExcellent valueToo soon to comment on durability