Product comparison · 2 memory modules

HyperX 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2) vs HyperX 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2)

Key differences

Internal memory
- 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2):2 GB
- 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2):4 GB
Memory layout (modules x size)
- 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2):2 x 1 GB
- 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2):2 x 2 GB
Internal memory type
- 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2):DDR2
- 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2):DDR3
CAS latency
- 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2):7
- 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2):9
Memory voltage
- 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2):2.0 V
- 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2):1.6 V

Differences highlightedShow differences only

Comparison of 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2), 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2)
9 specifications	A HyperX 2GB 1066MHz DDR2 Non-ECC CL7 (7-7-7-20) DIMM (Kit of 2)View product	B HyperX 4GB 1375MHz DDR3 Non-ECC CL9 (9-9-9) DIMM (Kit of 2)View product
Features5 differ
Internal memoryDiffers	2 GB	4 GB
Memory layout (modules x size)Differs	2 x 1 GB	2 x 2 GB
Internal memory typeDiffers	DDR2	DDR3
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	No	No
CAS latencyDiffers	7	9
Memory clock speedKnown for one	1066 MHz	Unknown — not stated by the source
Memory voltageDiffers	2.0 V	1.6 V
Lead plating	Gold	Gold

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.