If you're curious about the title of this post then more than likely you're repeating the same question and saying what is so interesting about the Samsung SSD 850, other than its storage capacity that reaches up to 1TB. I mean we already have SSD's that can hold up to 1TB of files on the current market. It has NAND technology,technology that's seen in all flash memory cells because its standard technology. It has SATA 6Gbps which is also standard in current SSD's today. Whats so special about this particular SSD? Its 3D,3D NAND that is.The Samsung 850 Pro is the very first solid state storage drive to introduce 3D NAND technology,an consumer first,industry first.
So what do 3D NAND technology consist of ? Its a scaling process of the processors die so that NAND can operate more efficiently without shrinking the die any further. Scaling below 20nm would be a challenging and difficult feat from an engineering standpoint.
To solve the scalability issue, Samsung implements 3D NAND technology. How does 3D NAND works is rather complex but I will simplify it for you as best I can. In tradition NAND and other semiconductors are scaled horizontally right along the X and Y axis,but due to the small size of the transistor,Samsung solves this problem with a Z axis in a vertical dimension. Instead of engineers cramming transistors horizontal closer and closer together,with 3D NAND it stacks layers of transistors right on top of each other, I know this weird science,mad genius type stuff,but follow along.
By stacking transistors in a vertical fashion,the engineers at Samsung are able to relax the process nodes back to a more reasonable 40nm process,thus having no need for a 10nm class node which in turn increase its density.
When you have 32 cells stacked on top of each other this dismisses the need to use a 10nm class node, stacking method increases density, thus allowing production cost to scale much lower,it all comes down to cost and performance.
So what does this all means to the average Joe Smoe,it means an increased in performance from the NAND, an overall better performing SSD. If you want to read an in depth review of the solid state drive just head right over to Anandtech website which is by far one of the best tech sites for hardware and overall technology, they break the Samsung SSD 850 down to the nuts and bolts with a very detailed review.
Keywords you want know: Nodes: is an active electronic device that is attached to a network, and is capable of sending, receiving, or forwarding information. Flash Memory: just to give you the gist as to what it really is is,its basically an non-volatile computer storage device that can be electrically erased and reprogrammed.To simplify it,data can be erased or stored,there are no moving parts in solid state drives.
Credit Source: AnandTech, Samsung