HP 647893-B21 memory module vs HP A2Z49AA memory module

Comparison of 647893-B21, A2Z49AA

8 specifications	A HP 647893-B21 memory module Model 647893-B21 View product	B HP A2Z49AA memory module Model A2Z49AA View product
Features1 differ
Internal memory	4 GB	4 GB
Memory layout (modules x size)	1 x 4 GB	1 x 4 GB
Internal memory type	DDR3	DDR3
Component forKnown for one	PC/Server	—Unknown — not stated by the source
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latencyKnown for one	9	—Unknown — not stated by the source
Memory clock speedDiffers	1333 MHz	1600 MHz

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.