Product comparison · 2 memory modules

HP 256MB DDR-400 vs HP 4GB DDR2-400

7specifications compared
4differ
3identical
1known for one product only

Key differences

The HP 4GB DDR2-400 has 3.75 GB more internal memory than the HP 256MB DDR-400 (4 GB vs 0.25 GB). The HP 4GB DDR2-400 has 56 -pin DIMM more memory form factor than the HP 256MB DDR-400 (240-pin DIMM vs 184-pin DIMM). Memory layout (modules x size): 1 x 0.25 GB on the HP 256MB DDR-400, 2 x 2 GB on the HP 4GB DDR2-400. Internal memory type: DDR on the HP 256MB DDR-400, DDR2 on the HP 4GB DDR2-400.

Internal memory
- 256MB DDR-400:0.25 GB
- 4GB DDR2-400:4 GB
Memory layout (modules x size)
- 256MB DDR-400:1 x 0.25 GB
- 4GB DDR2-400:2 x 2 GB
Internal memory type
- 256MB DDR-400:DDR
- 4GB DDR2-400:DDR2
Memory form factor
- 256MB DDR-400:184-pin DIMM
- 4GB DDR2-400:240-pin DIMM

Side by side

Differences highlightedShow differences only

Comparison of 256MB DDR-400, 4GB DDR2-400
8 specifications	A HP 256MB DDR-400 View product	B HP 4GB DDR2-400 View product
Features4 differ
Internal memoryDiffers	0.25 GB	4 GB
Memory layout (modules x size)Differs	1 x 0.25 GB	2 x 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 speed	400 MHz	400 MHz
Buffered memory typeKnown for one	Unregistered (unbuffered)	Unknown — not stated by the source

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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