Product comparison · 2 memory modules

Kingston Technology 2GB 667MHz FBDIMM Kit (4-core and 8-core systems) vs Kingston Technology 4GB 533MHz DDR2 ECC Fully Buffered CL4 DIMM (Kit of 2) Dual Rank, x8

Key differences

Internal memory
- 2GB 667MHz FBDIMM Kit (4-core and 8-core systems):2 GB
- 4GB 533MHz DDR2 ECC Fully Buffered CL4 DIMM (Kit of 2) Dual Rank, x8:4 GB
Memory layout (modules x size)
- 2GB 667MHz FBDIMM Kit (4-core and 8-core systems):2 x 1 GB
- 4GB 533MHz DDR2 ECC Fully Buffered CL4 DIMM (Kit of 2) Dual Rank, x8:2 x 2 GB
CAS latency
- 2GB 667MHz FBDIMM Kit (4-core and 8-core systems):5
- 4GB 533MHz DDR2 ECC Fully Buffered CL4 DIMM (Kit of 2) Dual Rank, x8:4

Differences highlightedShow differences only

Comparison of 2GB 667MHz FBDIMM Kit (4-core and 8-core systems), 4GB 533MHz DDR2 ECC Fully Buffered CL4 DIMM (Kit of 2) Dual Rank, x8
18 specifications	A Kingston Technology 2GB 667MHz FBDIMM Kit (4-core and 8-core systems)View product	B Kingston Technology 4GB 533MHz DDR2 ECC Fully Buffered CL4 DIMM (Kit of 2) Dual Rank, x8 View product
Features3 differ
Internal memoryDiffers	2 GB	4 GB
Memory layout (modules x size)Differs	2 x 1 GB	2 x 2 GB
Internal memory type	DDR2	DDR2
CAS latencyDiffers	5	4
Memory bus	72 bit	72 bit
Buffered memory type	Registered (buffered)	Registered (buffered)
Memory voltage	1.8 V	1.8 V
Module configurationKnown for one	128M X 72	Unknown — not stated by the source
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Memory form factorKnown for one	Unknown — not stated by the source	240-pin DIMM
ECCKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
CompatibilityKnown for one	MA986 (Apple)	Unknown — not stated by the source
Bus clock rateKnown for one	667 MHz	Unknown — not stated by the source
Error indicationKnown for one	ECC	Unknown — not stated by the source
Form factorKnown for one	240-pin DIMM	Unknown — not stated by the source
Internal memoryKnown for one	2048 MB	Unknown — not stated by the source
Memory layoutKnown for one	2 x 1024 MB	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.