Lenovo 49Y3746 memory module vs Lenovo 57Y4427 memory module

Comparison of 49Y3746, 57Y4427

13 specifications	A Lenovo 49Y3746 memory module Model 49Y3746 View product	B Lenovo 57Y4427 memory module Model 57Y4427 View product
Features1 differ
Internal memoryDiffers	4 GB	8 GB
Internal memory type	DDR3	DDR3
Component forKnown for one	—Unknown — not stated by the source	PC/Server
Memory form factor	240-pin DIMM	240-pin DIMM
Memory clock speed	1333 MHz	1333 MHz
Memory typeKnown for one	—Unknown — not stated by the source	DDR3 SDRAM
Memory layout (modules x size)Known for one	1 x 4 GB	—Unknown — not stated by the source
ECCKnown for one	Yes	—Unknown — not stated by the source
CAS latencyKnown for one	9	—Unknown — not stated by the source
Memory voltageKnown for one	1.5 V	—Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	—Unknown — not stated by the source	134.6 mm
DepthKnown for one	—Unknown — not stated by the source	30.5 mm
HeightKnown for one	—Unknown — not stated by the source	7.62 mm

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.