Product comparison · 2 memory modules

HP 2GB DDR-400 vs HP 2GB DDR2-667

7specifications compared
4differ
3identical
7known for one product only

Key differences

Internal memory type
- 2GB DDR-400:DDR
- 2GB DDR2-667:DDR2
Memory form factor
- 2GB DDR-400:184-pin DIMM
- 2GB DDR2-667:240-pin DIMM
Memory clock speed
- 2GB DDR-400:400 MHz
- 2GB DDR2-667:667 MHz
Buffered memory type
- 2GB DDR-400:Registered (buffered)
- 2GB DDR2-667:Unregistered (unbuffered)

Side by side

Differences highlightedShow differences only

Comparison of 2GB DDR-400, 2GB DDR2-667
14 specifications	A HP 2GB DDR-400 View product	B HP 2GB DDR2-667 View product
Features4 differ
Internal memory	2 GB	2 GB
Internal memory typeDiffers	DDR	DDR2
Component for	PC/Server	PC/Server
Memory form factorDiffers	184-pin DIMM	240-pin DIMM
ECC	Yes	Yes
Memory clock speedDiffers	400 MHz	667 MHz
Buffered memory typeDiffers	Registered (buffered)	Unregistered (unbuffered)
Memory layout (modules x size)Known for one	1 x 2 GB	Unknown — not stated by the source
CAS latencyKnown for one	3	Unknown — not stated by the source
Memory voltageKnown for one	2.5 V	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	111 mm
DepthKnown for one	Unknown — not stated by the source	171.4 mm
HeightKnown for one	Unknown — not stated by the source	63.5 mm
WeightKnown for one	Unknown — not stated by the source	500 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.

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