Flash memory based drives have now implemented a special "wear" algorithm, such that new data is written on cells that are not progammed with data, and so files are moved continuosly across the drive to mentain a balance of erase/program for all the cells, otherwise if a file is continuously written and modified on the same memory cells, these will wear after those few hundred of cycles and not be able to be used anymore. That is why a worn out SSD drive, that has reached a TBW spec, will not retain the information for long. Get fast NVMe™ solid state performance featuring 1050MB/s 2 read and 1000MB/s 2 write speeds in a portable, high-capacity drive that’s perfect for creating amazing content or capturing incredible footage. Now, to answer your question, powering up the drive containing that memory does not refresh it's content. You can keep it powered up continuously, the information stored in the transistors is NOT UPDATED OR REFRESHED by the power applied to device, unless you write again the information. This principle of refreshing the data from time to time is used in the RAM memory in computers, and losing power leads to losing data. The ADATA SE730H is another competitor that perhaps deserves more recognition. It is smaller than the SanDisk Extreme Portable, slight cheaper, and sports an IP68 rating making it far more resilient. Like the Extreme, it has a Type-C connector, a three-year warranty and uses 3D NAND Flash technology – but it is slightly slower and comes from a lesser-known brand. The Extreme PRO® SSD works with PCs and Mac™ computers right out of the box and connects with USB Type C and Type A, 3 making it easy to start and keep working in almost any situation.

SanDisk 4TB Extreme Portable SSD, USB-C USB 3.2 Gen 2

When used with a USB Type-C cable, the SanDisk Extreme rises above the competition with some stellar numbers. The design and form factor are spot on and while we have one reservation regarding the bundled cable, you can’t go wrong at this price. Ruggedized design with a forged aluminum body to protect the SSD core and dissipate heat. Plus, a durable silicon rubber coating seeks to deliver higher impact resistance with its IP55 rating for water and dust resistance. 1 Creative professionals know the value of storage space. With capacities of up to 2TB, 5 you’ll have enough room for the files you need to work on or deliver. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: There’s not much competition in this price range. The Samsung T5, which costs marginally less and is far more portable, is the only rival that is widely available. It is not IP-rated, though, and its metallic surface is likely to get scratched easily.

Industry-Leading Commitment

From SanDisk, the brand professional photographers worldwide trust to handle their best shots and footage.

SanDisk 1TB Extreme Portable External SSD - Up to 550MB/s SanDisk 1TB Extreme Portable External SSD - Up to 550MB/s

From SanDisk, the brand professional photographers worldwide trust to handle best shots on their toughest assignments. Hard drives based on magnetic retention of data are better in this respect, since the retention time is greater if the device is kept properly. Get peace of mind when you’re out in the world thanks to a 5-year limited warranty 3 and a forged aluminum chassis-silicon shell combo that offers a premium feel and added protection.Neither the name of the University of California, Berkeley nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. SanDisk’s Extreme v2 is a bit bigger than the original, measuring 101 x 52 x 9 mm and weighing in at under 63 grams. With a carabiner loop integrated and a durable silicone coating, the Extreme v2 features a functional, portable, and enduring design for those on the move in tough conditions. But unlike the Extreme Pro, the Extreme v2’s case and internal structure is made of plastic rather than rigid aluminum. This makes for a small and compact design that is also pretty light, but a little less resistant to twists and bending.