A CLOSER LOOK INSIDE
After separating the two metal shells that protect the MX200, we get a closer look at the components within.
On the left we have the 1TB model and on the right the 500GB model. The overall layout is very similar between the two. They both have 8 NAND packages on the front, a Marvell controller, Micron DRAM cache, and power-loss circuit. If you even look at the PCB of the 1TB M600 SSD we reviewed last September, you can see it is the same as the 1TB MX200, NAND and DRAM included.
The back side is where we start to see more of a difference. The 1TB model has an additional 8 NAND packages and another DRAM chip, while the 500GB model remains bare save for a few SMDs.
Having a closer look at the power-loss circuit for each SSD, we can see a little more than double the capacitors on the 1TB model.
Powering each MX200 is the well-known and highly reliable 8 channel 88SS9189 Marvell SATA controller. This has been Crucial’s choice since the M550 was introduced and now spans three of their products. Both SSDs tested today also utilize the same NAND and DRAM.
The MX200 contains Micron’s NAND flash memory, as well as a single Micron cache memory chip on the front and another on the back of the 1TB model. By using the Micron FBGA Decoder, we can identify the NAND flash as having the product number MT29F512G08CKCCBH7-10:C. It is 16nm synchronous MLC NAND flash memory with each module being 32GB in capacity. Although the total RAW capacity of these SSDs are 500GB and 1TB, usable storage space is 465GB and 931GB respectively.
Furthermore, we can identify the DRAM memory as having the product number MT42L256M16D1GU-18 WT:A. The DRAM chips are 256MB of LPDDR2 that run at 533MHz.