Samsung 840 Pro 256GB SSD
Unlike the 830, Samsung now uses an all metal case for the 840 and 840 Pro.
On the outside, there isn't much to distinguish the 840 from the 840 Pro other than the label on the back of the drive.
The 7mm design is essential for all new SSDs since the market is pushing this new form-factor to produce smaller and lighter designs. Even if you don't need a 7mm drive today, you will in the future.
The 7mm spec doesn't change the location of the mounting points or SATA power and data cable.
The Samsung 840 Pro uses a three-core controller. Each core handles a different task - one for reading, one for writing and a third to perform background tasks.
Samsung doesn't need to source any of the major components from other suppliers. They make the DRAM, controller and NAND flash.
All eight NAND flash chips are on the top side of the PCB. This side is void of all surface mount components.
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