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RAW Series. The largest M. So, if you have a generous budget and need a ton of storage space, there's an M. Strap in, because this bit is more complicated than it should be.
As noted earlier, 2. And the fastest M. The tricky bit OK, another tricky bit is that an M. That said, most high-end M. Both M. So be sure to double-check the manual for your motherboard, laptop, or convertible, as well as what a given drive supports, before buying.
So if your device supports NVMe and you find a good deal on a drive, you may want to consider NVMe as an option even if you don't have a strong need for the extra speed. Until pricing drops and we see more competition, 4TB and larger drives will be relegated to professionals and enthusiasts with very deep pockets.
But for laptop and convertible tablet owners, drive efficiency is more important than speed—especially if you want all-day battery life. And higher-capacity models can draw more power than less-spacious drives, simply because there are more NAND packages on bigger drives to write your data to.
While the above advice is true in a general sense, some drives can buck trends, and technology is always advancing and changing the landscape. If battery life is key to your drive-buying considerations, be sure to consult the power consumption testing we do on every SSD we test.
Think of the controller as the processor of your drive. It routes your reads and writes and performs other key drive performance and maintenance tasks. It can be interesting to dive deep into specific controller types and specs. Some of them are far less common than they used to be, and some are becoming the de facto standard. All flash memory has a limited life span, meaning after any given storage cell is written to a certain number of times, it will stop holding data.
As the years pass and cells start to die, the drive will move your data off the worn-out cells to these fresh new ones, thereby greatly extending the usable lifespan of the drive. The flash in SSDs used to be arranged in a single layer planar. As time progresses, drive makers are stacking more and more layers on top of each other, leading to denser, more spacious, and less-expensive drives.
At this point, the vast majority of current-generation consumer SSDs are made using some type of 3D storage. These days, many drives use layer or layer NAND, and technologies to add more layers are always in the works.
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