Lenovo 43R1989 memory module vs Lenovo 55Y3715 memory module

Comparison of 43R1989, 55Y3715

11 specifications	A Lenovo 43R1989 memory module Model 43R1989 View product	B Lenovo 55Y3715 memory module Model 55Y3715 View product
Features1 differ
Internal memory	1 GB	1 GB
Memory layout (modules x size)	1 x 1 GB	1 x 1 GB
Internal memory type	DDR3	DDR3
Component for	Laptop	Laptop
Memory form factor	SO-DIMM	SO-DIMM
ECC	No	No
Memory clock speedDiffers	1066 MHz	1333 MHz
Backlight	No	No
Compatible productsKnown for one	ThinkPad X200, X200s, X200si, X201, X201i, X201s	—Unknown — not stated by the source
Memory voltageKnown for one	—Unknown — not stated by the source	1.5 V
Softwareidentical
Windows operating systems supported	Yes	Yes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.