SANDISK Extreme Pro 128GB, USB 3.2, Solid State Flash Drive, Upto 420MB/s Read & 380MB/s Write (SDCZ880-128G-G46)

You have seen 240mb write speed 400 mb read speed but this is not for 64 or 128gb varient pendrives this is for only 256gb varient... I bought 64gb so on my product they mentioned 100mb write speed and 395mb read speed and I researched on it and found that 128gb varient also 395mb read speed and 180mb write speed.. so on my laptop i5 6th gen old but i added a sata ssd Samsung 860 evo 500gb so ssd to my 64gb pendrive file trasfaring highest 95mbps write speed normally 60-85mbps Most of the time arround 80 and pendrive to my ssd 250-380mbps read speed most of the time arround upto 300... pendrive speed good enough but mentioned speed Wrongly marketing strategy.. i bought it 1600 soo I don't regards because on this price it's very good quality Product

I already possess a 64GB Sandisk Extreme USB flash drive that is really fast and works extremely well. This 256GB Extreme Pro USB flash drive is just as good (if not slightly better in performance) and one of the fastest USB flash drives in the market today. The only difference is that the Extreme looks a lot cooler with red lettering and has a slightly better connector retraction and deployment mechanism vs the Extreme Pro.

This is the worst performing USB drive I have ever seen. It does reach its claimed speeds but only in sequential read and write and that too some times only. In the attached image of its performance you can see that its random write has speeds in kB/s. Thus in real life, it performs even worse than a USB 2.0 drive. In the attached video, notice that I only copied 200 files of about 62MB and still it took more than 2:30 minutes, this is a net speed of less than 0.4MB/s. In my daily use, I've seen it to pause for a while even when opening folders. Even while deleting files, it takes a lot of time. Before buying I felt confident because it was SanDisk and I already own some of their product. But this was such a disappointment from SanDisk. So when I first observed ridiculously low speeds, I thought something else might be wrong but when I seriously tested it on different PC, laptop and OS, I realized that its performance is actually terrible. However, by the time I realized it was too late to return it. I had bought a 256GB version and it is a completely useless product for me now. At such a high price of ~5000 INR, I would have been better with a portable ssd instead. I totally regret buying this and won't be buying anything from SanDisk until I see some positive response from them. And if they really care about their brand names they must recall all the usb drives they sold of this model.

The usb drive is blazing fast. It doesn't give any reason to be disappointed. Build: It has a metallic cladding on the outside, making it extremely durable to free falls and rough usage. Speed: It supports USB 3.1, I could see speeds of 390 MB/s and 310 MB/s for read and write respectively, on my MacBook Pro. Any drive not just this one, shows better speeds when there are fewer but big sized files for transfer, like HD videos. On the other hand having a large number of smaller files like txt files of 2 - 200 KB, it tends to give slower read and write speeds. It can't be completely referred to as value for money as the money spent for this value is too much, but then that's the USP of this drive... SPEED.

After owning Sony 64GB USB drive for last 5 years, buying this 256 GB version with improved read/write speeds is a no brainer. Tested on PC as well as on Laptop on USB 3.2 gen1 port(5Gbps). almost reached the rated speed in writes whereas in reads there is a different story, but overall I'm happy with this purchase. NOTE: I'm using M.2 GEN3 SSD from XPG & WD RED SATA3 For HDD.

Love the build quality of the USB Drive. The speed of data transfer, (Sadly, Windows being Windows makes it slower). But it’s good that a recovery software service subscription is available for recovering data from the USB Drive ALSO, for those crying out loud about SMART and TRIM Command, I got the USB 3.2 one and it supports both of these!

Works as promoted! Go for it

Turning extremely hot while using in short duration