Product comparison · 2 memory modules

HyperX 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP vs HyperX 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM

Key differences

Internal memory
- 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP:2 GB
- 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM:4 GB
Internal memory type
- 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP:DDR3
- 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM:DDR2
CAS latency
- 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP:7
- 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM:5
Memory voltage
- 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP:1.9 V
- 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM:2.2 V

Differences highlightedShow differences only

Comparison of 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP, 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM
15 specifications	A HyperX 2GB 1625MHz DDR3 Non-ECC Low-Latency CL7 (7-7-7-20) DIMM(Kit of 2) XMP View product	B HyperX 4GB( 4 x 1024MB), 1066MHz, DDR2, Non-ECC, CL5 (5-5-5-15), DIMM View product
Features4 differ
Internal memoryDiffers	2 GB	4 GB
Internal memory typeDiffers	DDR3	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	No	No
CAS latencyDiffers	7	5
Memory clock speedKnown for one	Unknown — not stated by the source	1066 MHz
Memory busKnown for one	Unknown — not stated by the source	64 bit
Buffered memory typeKnown for one	Unknown — not stated by the source	Unregistered (unbuffered)
Memory voltageDiffers	1.9 V	2.2 V
Module configurationKnown for one	Unknown — not stated by the source	128M X 64
Lead plating	Gold	Gold
Other featuresidentical
Bus clock rateKnown for one	Unknown — not stated by the source	1066 MHz
Error indicationKnown for one	Unknown — not stated by the source	No
Internal memoryKnown for one	Unknown — not stated by the source	4096 MB
Memory layoutKnown for one	Unknown — not stated by the source	4 x 1024 MB

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.