Product comparison · 2 memory modules

HP 2GB DDR-400 vs HP 2GB DDR2-533

Key differences

Internal memory type
- 2GB DDR-400:DDR
- 2GB DDR2-533:DDR2
Component for
- 2GB DDR-400:PC/Server
- 2GB DDR2-533:Laptop
Memory form factor
- 2GB DDR-400:184-pin DIMM
- 2GB DDR2-533:200-pin SO-DIMM
ECC
- 2GB DDR-400:Yes
- 2GB DDR2-533:No
CAS latency
- 2GB DDR-400:3
- 2GB DDR2-533:4
Memory clock speed
- 2GB DDR-400:400 MHz
- 2GB DDR2-533:533 MHz
Buffered memory type
- 2GB DDR-400:Registered (buffered)
- 2GB DDR2-533:Unregistered (unbuffered)
Memory voltage
- 2GB DDR-400:2.5 V
- 2GB DDR2-533:1.8 V

Differences highlightedShow differences only

Comparison of 2GB DDR-400, 2GB DDR2-533
14 specifications	A HP 2GB DDR-400 View product	B HP 2GB DDR2-533 View product
Features8 differ
Internal memory	2 GB	2 GB
Internal memory typeDiffers	DDR	DDR2
Component forDiffers	PC/Server	Laptop
Memory form factorDiffers	184-pin DIMM	200-pin SO-DIMM
ECCDiffers	Yes	No
CAS latencyDiffers	3	4
Memory clock speedDiffers	400 MHz	533 MHz
Buffered memory typeDiffers	Registered (buffered)	Unregistered (unbuffered)
Memory voltageDiffers	2.5 V	1.8 V
Memory layout (modules x size)Known for one	1 x 2 GB	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	171.4 mm
DepthKnown for one	Unknown — not stated by the source	63.5 mm
HeightKnown for one	Unknown — not stated by the source	111 mm
WeightKnown for one	Unknown — not stated by the source	31.2 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.