Product comparison · 2 memory modules

HP VH638AA memory module vs Kingston Technology 3GB DDR3 240-pin DIMM Kit

4specifications compared
2differ
2identical
20known for one product only

Key differences

Internal memory
- VH638AA memory module:4 GB
- 3GB DDR3 240-pin DIMM Kit:3 GB
Memory layout (modules x size)
- VH638AA memory module:1 x 4 GB
- 3GB DDR3 240-pin DIMM Kit:3 x 1 GB

Side by side

Differences highlightedShow differences only

Comparison of VH638AA, 3GB DDR3 240-pin DIMM Kit
24 specifications	A HP VH638AA memory module Model VH638AA View product	B Kingston Technology 3GB DDR3 240-pin DIMM Kit View product
Features2 differ
Internal memoryDiffers	4 GB	3 GB
Memory layout (modules x size)Differs	1 x 4 GB	3 x 1 GB
Internal memory type	DDR3	DDR3
Memory form factor	240-pin DIMM	240-pin DIMM
ECCKnown for one	Unknown — not stated by the source	Yes
CAS latencyKnown for one	Unknown — not stated by the source	9
Memory busKnown for one	Unknown — not stated by the source	72 bit
Buffered memory typeKnown for one	Unknown — not stated by the source	Registered (buffered)
Memory voltageKnown for one	Unknown — not stated by the source	1.5 V
Row cycle timeKnown for one	Unknown — not stated by the source	49.5 ns
Refresh row cycle timeKnown for one	Unknown — not stated by the source	110 ns
Row active timeKnown for one	Unknown — not stated by the source	36 ns
Memory typeKnown for one	Unknown — not stated by the source	DDR3
Lead platingKnown for one	Unknown — not stated by the source	Gold
Component forKnown for one	PC/Server	Unknown — not stated by the source
Memory clock speedKnown for one	1333 MHz	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 85 °C
Other featuresidentical
Chips organisationKnown for one	Unknown — not stated by the source	X8
Size (imperial)Known for one	3 cm (1.18")	Unknown — not stated by the source
Softwareidentical
Windows operating systems supportedKnown for one	Windows 2000, Windows Vista Business, Windows Vista Business x64, Windows Vista Home Basic, Windows XP Home, Windows XP Professional, Windows XP Professional x64	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	30 mm	Unknown — not stated by the source
DepthKnown for one	133 mm	Unknown — not stated by the source
HeightKnown for one	4 mm	Unknown — not stated by the source
Packaging dataidentical
Package typeKnown for one	DIMM	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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