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Samsung Stick Label Decoder

Welcome, welcome! Ever wonder what all those numbers and letters on your Samsung memory stick mean? Well, you've come to the right place! Let's dive in!

Here's a breakdown of the Samsung part numbering system:

Field	Description
M378A2G43CB3-CWE	Example part number
M	Memory Module
3	3 = DIMM, 4 = SO-DIMM
78	78 = x64 288-pin Unbuffered DIMM, 91 = x72 288-pin Unbuffered ECC DIMM
A	A = DDR4 (1.2V)
2G	According to Samsung: Depth, usually 51 (512M), 1G / 1K, 2G / 2K, 4G The K notation is if 8Gbit ICs are used, the G notation otherwise. (I don't understand but this is always the stick's capacity divided by 8)
4	4 = 16 Banks & 1.2V
3	Width - 0 = x4, 3 = x8, 4 = x16
C	Component Revision
B	Package, B = Flip Chip FBGA, M = DDP FBGA
3	PCB Revision, numeric part (e.g. 2 may mean A2 or B2)
C	C is commercial temperature rating, I is industrial
WE	JEDEC speed rating, see table (3200CL22)

The label interestingly does not contain the density directly. However you can figure it out:

• Does the "Depth" end in K? Density is 8Gbit.
• If you know the number of ranks (by looking for the #Rx# on the label or counting the number of ICs), you can just multiply the Depth by the Width and then divide it by the number of Ranks - that will be the density of the ICs in Gbit.
• If you can not, like when ordering just from a part number (that's what this line is): Try multiplying the Depth by the Width. If the value is 32 it's likely dual rank 16Gbit, if 16 single rank 16Gbit, if 8 dual rank 4Gbit, if 4 single rank 4Gbit.

Since the Component Revision is C, and the Density works out at 16Gbit, this example is S16C, in the 3200CL22 JEDEC bin.