Product comparison · 2 memory modules

HyperX 4GB (2 x 2GB) 667MHz DDR2 vs Kingston Technology 2GB Low Power Kit

14specifications compared
11differ
3identical
12known for one product only

Key differences

Internal memory
- 4GB (2 x 2GB) 667MHz DDR2:4 GB
- 2GB Low Power Kit:2 GB
Memory layout (modules x size)
- 4GB (2 x 2GB) 667MHz DDR2:2 x 2 GB
- 2GB Low Power Kit:2 x 1 GB
Internal memory type
- 4GB (2 x 2GB) 667MHz DDR2:DDR2
- 2GB Low Power Kit:DDR
ECC
- 4GB (2 x 2GB) 667MHz DDR2:No
- 2GB Low Power Kit:Yes
CAS latency
- 4GB (2 x 2GB) 667MHz DDR2:4
- 2GB Low Power Kit:5
Memory bus
- 4GB (2 x 2GB) 667MHz DDR2:64 bit
- 2GB Low Power Kit:72 bit
Buffered memory type
- 4GB (2 x 2GB) 667MHz DDR2:Unregistered (unbuffered)
- 2GB Low Power Kit:Registered (buffered)
Module configuration
- 4GB (2 x 2GB) 667MHz DDR2:256M x 64
- 2GB Low Power Kit:128M X 72

Side by side

Differences highlightedShow differences only

Comparison of 4GB (2 x 2GB) 667MHz DDR2, 2GB Low Power Kit
26 specifications	A HyperX 4GB (2 x 2GB) 667MHz DDR2 View product	B Kingston Technology 2GB Low Power Kit View product
Features8 differ
Internal memoryDiffers	4 GB	2 GB
Memory layout (modules x size)Differs	2 x 2 GB	2 x 1 GB
Internal memory typeDiffers	DDR2	DDR
Component forKnown for one	Laptop	Unknown — not stated by the source
Memory form factorKnown for one	200-pin SO-DIMM	Unknown — not stated by the source
ECCDiffers	No	Yes
CAS latencyDiffers	4	5
Memory clock speedKnown for one	667 MHz	Unknown — not stated by the source
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltage	1.8 V	1.8 V
Module configurationDiffers	256M x 64	128M X 72
Row cycle timeKnown for one	60 ns	Unknown — not stated by the source
Refresh row cycle timeKnown for one	127.5 ns	Unknown — not stated by the source
Row active timeKnown for one	70000 ns	Unknown — not stated by the source
Lead plating	Gold	Gold
Memory typeKnown for one	Unknown — not stated by the source	DDR2
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 55 °C	Unknown — not stated by the source
Other features3 differ
Bus clock rate	667 MHz	667 MHz
Error indicationDiffers	No	ECC
Internal memoryDiffers	4096 MB	2048 MB
Memory layoutDiffers	2 x 2048 MB	2 x 1024 MB
Number of pinsKnown for one	200	Unknown — not stated by the source
Memory technologyKnown for one	PC2-5300	Unknown — not stated by the source
CompatibilityKnown for one	Unknown — not stated by the source	397411-B21 (HP); 398706-051 (HP); 442822-B21 (HP); 448049-001 (HP); 461826-B21 (HP); EM160AA (HP)
Form factorKnown for one	Unknown — not stated by the source	240-pin DIMM

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.

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