Product comparison · 2 memory modules

2-Power 16GB DDR4 RDIMM (2Rx4) vs 2-Power 4GB DDR3 DIMM

Key differences

Internal memory
- 16GB DDR4 RDIMM (2Rx4):16 GB
- 4GB DDR3 DIMM:4 GB
Memory layout (modules x size)
- 16GB DDR4 RDIMM (2Rx4):1 x 16 GB
- 4GB DDR3 DIMM:1 x 4 GB
Internal memory type
- 16GB DDR4 RDIMM (2Rx4):DDR4
- 4GB DDR3 DIMM:DDR3
Memory form factor
- 16GB DDR4 RDIMM (2Rx4):288-pin DIMM
- 4GB DDR3 DIMM:240-pin DIMM
ECC
- 16GB DDR4 RDIMM (2Rx4):Yes
- 4GB DDR3 DIMM:No
CAS latency
- 16GB DDR4 RDIMM (2Rx4):15
- 4GB DDR3 DIMM:9
Memory clock speed
- 16GB DDR4 RDIMM (2Rx4):2133 MHz
- 4GB DDR3 DIMM:1333 MHz
Buffered memory type
- 16GB DDR4 RDIMM (2Rx4):Registered (buffered)
- 4GB DDR3 DIMM:Unregistered (unbuffered)

Differences highlightedShow differences only

Comparison of 16GB DDR4 RDIMM (2Rx4), 4GB DDR3 DIMM
19 specifications	A 2-Power 16GB DDR4 RDIMM (2Rx4)View product	B 2-Power 4GB DDR3 DIMM View product
Features8 differ
Internal memoryDiffers	16 GB	4 GB
Memory layout (modules x size)Differs	1 x 16 GB	1 x 4 GB
Internal memory typeDiffers	DDR4	DDR3
Memory form factorDiffers	288-pin DIMM	240-pin DIMM
ECCDiffers	Yes	No
CAS latencyDiffers	15	9
Memory clock speedDiffers	2133 MHz	1333 MHz
Buffered memory typeDiffers	Registered (buffered)	Unregistered (unbuffered)
Weight & dimensions4 differ
WidthDiffers	134 mm	152 mm
DepthDiffers	4 mm	6 mm
HeightDiffers	32 mm	52 mm
WeightDiffers	24 g	22 g

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.