Lenovo 49Y3747 memory module vs Lenovo 57Y4426 memory module

Comparison of 49Y3747, 57Y4426

13 specifications	A Lenovo 49Y3747 memory module Model 49Y3747 View product	B Lenovo 57Y4426 memory module Model 57Y4426 View product
Features1 differ
Internal memoryDiffers	8 GB	4 GB
Component forKnown for one	—Unknown — not stated by the source	PC/Server
Memory typeKnown for one	—Unknown — not stated by the source	DDR3 SDRAM
Memory layout (modules x size)Known for one	1 x 8 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 mm
DepthKnown for one	—Unknown — not stated by the source	30 mm
HeightKnown for one	—Unknown — not stated by the source	8 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.