Product comparison · 2 memory modules

Kingston Technology 256MB 667MHz DDR2 Non-ECC CL5 DIMM vs Kingston Technology ValueRAM 2x 512MB 400MHz DDR

Key differences

Internal memory
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:0.25 GB
- ValueRAM 2x 512MB 400MHz DDR:0.5 GB
Internal memory type
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:DDR2
- ValueRAM 2x 512MB 400MHz DDR:DDR
Memory form factor
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:240-pin DIMM
- ValueRAM 2x 512MB 400MHz DDR:184-pin DIMM
ECC
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:No
- ValueRAM 2x 512MB 400MHz DDR:Yes
CAS latency
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:5
- ValueRAM 2x 512MB 400MHz DDR:3
Memory bus
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:64 bit
- ValueRAM 2x 512MB 400MHz DDR:72 bit
Memory voltage
- 256MB 667MHz DDR2 Non-ECC CL5 DIMM:1.8 V
- ValueRAM 2x 512MB 400MHz DDR:2.6 V

Differences highlightedShow differences only

Comparison of 256MB 667MHz DDR2 Non-ECC CL5 DIMM, ValueRAM 2x 512MB 400MHz DDR
13 specifications	A Kingston Technology 256MB 667MHz DDR2 Non-ECC CL5 DIMM View product	B Kingston Technology ValueRAM 2x 512MB 400MHz DDR View product
Features7 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Internal memory typeDiffers	DDR2	DDR
Memory form factorDiffers	240-pin DIMM	184-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	5	3
Memory busDiffers	64 bit	72 bit
Memory voltageDiffers	1.8 V	2.6 V
Lead platingKnown for one	Gold	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	133 mm
DepthKnown for one	Unknown — not stated by the source	1.2 mm
HeightKnown for one	Unknown — not stated by the source	32 mm
Other featuresidentical
Mac compatibilityKnown for one	Unknown — not stated by the source	No

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.