512GB USB 3.1 Flash Drive - Optimal Read speeds up to 400 MB/s, Write speeds up to 200 MB/s (AK58512G)

Best flash drives I've ever had! I bought 2 of these several years ago, and to this day I have never had a single problem. The cap on it is amazing, and it fits on the end so you won't lose it. File transfers are fast, compatible with every device I've ever tried, and they are easy to carry around. They're a bit pricey perhaps, but 100% worth it based on the quality and durability. I don't really leave reviews, however this product deserves it.

It's one of the best products with proposed a r/w speed.While many other seller companies specify and a max theoretical speed, this one indicates the stated speed that's important for write activity first of all. Obviously, it's about seq r/w speed and these speed values are stable (not goes down after several GBs copied like others).Also, this flash driver has a small part ~230-250MB in the beginning, so if you formatted and made 1 volume you will and a fall of speed at first ~230-250MB.Anyway, among other 3.1 flash drives, this one is highly recommended

I've been burned several times trying to find an actual real 1tb thumb drive. This one is an actual 1tb drive.I've learned that the first thing you need to do is to try to fill the thing up at least 1/2 way. If you can do this and read back the data then you're golden.

This works well. I did speed tests by writing at least 4 GB of files to the drive via a USB 3.0 port. When the average file size is near 0.5 MB, it copies at 16 MB/s and often slows down for a few minutes. With an average file size near 7 MB, it copies at 50 to 80 MB/s. For an average file size of 335 MB, it copies at 290 MB/s. When deleting the files, they are permanently deleted, at about 150 items/s.

I purchased three different flash drives and have a good comparison between them. The Arcanite drive is the best value for the storage space and form factor, but comes up short on speeds.Pros:Speed- Yes this is a fast drive...for reads. I was able to hit 250mbps easily and up to 300mbps at times. More about write speeds later.Form Factor- I like the sturdy feeling casing and design of this drive. It's nice that the cap snaps back onto the case while in useStorage- Great value for the amount of storage space you get.Cons:Speed- Write speeds would start out decent, around 150-200mbps for around 10 seconds. After that the drive would slow quickly to 50-70mbps for the duration of the write. I believe they have some form of high speed caching for the first few hundred Mb and then it can only write at the standard module speed.Formatting- Came formatted in FAT32, which is outdated and limits files to 4Gb, be prepared to reformat into a better filesystem.Overall this 128Gb drive was a good value and will suit someone who needs quick reads and higher than average writes. If you plan do to a lot of single writes and reads, like transferring some files for work or school, then you may be better off spending more money on a Sandisk Extreme go, which has writes almost three time as a fast, even though the reads are about 30% slower. Also, don't buy any drive with less than 128Gb as files are so large nowadays.*My review based on 128Gb model, which may have slightly slower reads than the large devices.

VERY VERY GOOD RESULTS! I RECOMEND!R/416mb/s W/343mb/s[Read]Sequential 1MiB (Q= 8, T= 1): 416.108 MB/s [ 396.8 IOPS] < 20108.35 us>Sequential 1MiB (Q= 1, T= 1): 408.692 MB/s [ 389.8 IOPS] < 2564.08 us>Random 4KiB (Q= 32, T=16): 14.607 MB/s [ 3566.2 IOPS] < 91600.45 us>Random 4KiB (Q= 1, T= 1): 12.771 MB/s [ 3117.9 IOPS] < 320.19 us>[Write]Sequential 1MiB (Q= 8, T= 1): 343.926 MB/s [ 328.0 IOPS] < 24276.58 us>Sequential 1MiB (Q= 1, T= 1): 340.334 MB/s [ 324.6 IOPS] < 3070.01 us>Random 4KiB (Q= 32, T=16): 5.112 MB/s [ 1248.0 IOPS] <150662.36 us>Random 4KiB (Q= 1, T= 1): 4.700 MB/s [ 1147.5 IOPS] < 870.40 us>

Update 12/6/20: It crashed after less than 4 weeks, taking all my files with it. I used it 6 times and wrote less than 10Gb of data. Already tried several recovery utilites to no avail, the drive is completely blank, partition table was destroyed and no recovery info availabe. AVOID AT ALL COSTS!!!!Ps: Not only it crashed, it also became write-protected.----------I needed a flash drive with fast writing speeds, so took a gamble after reading many reviews and bought the 128Gb version. I tend to overlook those flashy CrystalDiskMark tests since they only use a small portion of the drive (and tend to fall into the cached writes) and here is the result.The drive is fast, but not that fast.. i would say its mediocre, after the cache fills ups the write speeds fall from 120mb/sec to around 50-55, around the same speed of the Samsung bar, but at a higher cost.I won't say the drive is bad (endurance was not tested) but take the reviews (specially the ATTO or Crystaldiskmark) with a bit of salt.