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Samsung 850 EVO 250GB 3D V-NAND SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: Dec 8, 2014 9:05 pm
TweakTown Rating: 97%Manufacturer: Samsung

Samsung 850 EVO 250GB SSD

 

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Samsung abandoned the black packaging with the 850 EVO. The minimal retail package design keeps it simple on the front, but does highlight the 3D V-NAND technology.

 

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The rear of the retail package gives us some basic information about the 850 EVO, shows the five-year warranty, and has a massive list of regulatory symbols.

 

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Inside of the package, we found the 850 EVO SSD, a software disk with Magician and Data Migration, and two paper manuals.

 

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This is the first Samsung SSD to abandon the red / orange square at the bottom of the drive. This image almost looks like a black and white picture, but it's not.

 

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The back of the drive gives us the model number, serial number, and PSID for encryption.

 

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The 850 EVO uses a 7mm case design, so it will work in notebooks that require the smaller z-height.

 

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Inside, we found a tiny PCB with two NAND flash packages, a controller, and a DRAM package. All of the major components are designed and built by Samsung.

 

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We've stumbled across small PCBs before, but this one takes the award for the least amount of components for a consumer SSD, and the smallest overall PCB design. We've seen daughter boards on SSDs that are larger than this.

 

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This is Samsung's new MGX controller that is used on the 850 EVO 120GB, 250GB, and 500GB SSDs. As previously mentioned, the 1TB 850 EVO uses the MEX controller. On the surface, the new MGX controller looks identical to the MEX, aside from the label. Both are ARM based, so that doesn't surprise us any.

 

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This is Samsung's new 3-bit per cell 3D V-NAND. The 250GB model only uses two packages.

 

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The 850 EVO has only one DRAM package to buffer data.

 

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