Product comparison · 2 memory modules

Kingston Technology 1GB 400MHZ DDR2 ECC vs Kingston Technology DDR2 667MHz 4GB-kit

6specifications compared
4differ
2identical
4known for one product only

Key differences

Internal memory
- 1GB 400MHZ DDR2 ECC:1 GB
- DDR2 667MHz 4GB-kit:4 GB
Memory layout (modules x size)
- 1GB 400MHZ DDR2 ECC:1 x 1 GB
- DDR2 667MHz 4GB-kit:2 x 2 GB
ECC
- 1GB 400MHZ DDR2 ECC:Yes
- DDR2 667MHz 4GB-kit:No
Buffered memory type
- 1GB 400MHZ DDR2 ECC:Registered (buffered)
- DDR2 667MHz 4GB-kit:Unregistered (unbuffered)

Side by side

Differences highlightedShow differences only

Comparison of 1GB 400MHZ DDR2 ECC, DDR2 667MHz 4GB-kit
10 specifications	A Kingston Technology 1GB 400MHZ DDR2 ECC View product	B Kingston Technology DDR2 667MHz 4GB-kit View product
Features4 differ
Internal memoryDiffers	1 GB	4 GB
Memory layout (modules x size)Differs	1 x 1 GB	2 x 2 GB
Internal memory type	DDR2	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECCDiffers	Yes	No
Memory busKnown for one	72 bit	Unknown — not stated by the source
Buffered memory typeDiffers	Registered (buffered)	Unregistered (unbuffered)
Memory typeKnown for one	DDR2	Unknown — not stated by the source
CAS latencyKnown for one	Unknown — not stated by the source	5
Memory voltageKnown for one	Unknown — not stated by the source	1.8 V

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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