The SanDisk Extreme achieved a 4K random write speed of 2.1 MB/s which was over three times faster than the best of the rest, unfortunately we were unable to get consistent measurements but 2.1 MB/s was towards at the lower end of the range (10.8 MB/s - 1.71 MB/s) we observed. We suspect the inconsistency relates to the way the controller According to this specification the maximum amount of current provided from a Smartphone USB 2.0 OTG port is 500mA (2.5W), 900mA for the USB 3.0 (4.5W) port. Looking at a handful of USB flash drives here I see something around 0.04A for around 250mW consumed. Depending on what the drive is doing, read or write, that can vary around some. Portable storage. SanDisk Portable SSD. Featuring up to 520MB/s* transfer speeds, you can store your content and memories on a fast drive that fits seamlessly into your mobile lifestyle. SanDisk Extreme Portable SSD. Durable and dust-resistant* SSD with transfer speeds up to 1050MB/s.*. SanDisk Extreme PRO Portable SSD. SanDisk 256GB Extreme PRO USB 3.2 Solid State Flash Drive - Up to 420MB/s, Durable Aluminum Metal Casting - SDCZ880-256G-GAM46,Black SanDisk 128GB Cruzer Blade USB 2.0 Flash Drive - SDCZ50-128G-B35, Black Amazon's Choice in USB Flash Drives by SanDisk. 2K+ bought in past month. $3299. Get Fast, Free Shipping with Amazon Prime. FREE Returns. Available at a lower price from other sellers that may not offer free Prime shipping. Size: 512GB. 512GB. 16GB. Here we compared the new Extreme PRO to the portable SSD, SanDisk Extreme 510, as they flash drive claims SSD speeds. The thumb drive was able to hit 340.7MB/s write and 376.8MB/s read. Not as good as the 510 (408MB/s write and 430.8MB/s read) but impressive nonetheless for a thumb drive compared to a full-fledged SSD. .

sandisk ultra vs extreme flash drive