Product comparison · 2 memory modules

Kingston Technology 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4 vs Kingston Technology 4GB 667MHz FBDIMM Kit

Key differences

Memory layout (modules x size)
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4:1 x 4 GB
- 4GB 667MHz FBDIMM Kit:2 x 2 GB
Module configuration
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4:512M X 72
- 4GB 667MHz FBDIMM Kit:256M X 72
Error indication
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4:Parity
- 4GB 667MHz FBDIMM Kit:ECC
Memory layout
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4:1 x 4096 MB
- 4GB 667MHz FBDIMM Kit:2 x 2048 MB

Differences highlightedShow differences only

Comparison of 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4, 4GB 667MHz FBDIMM Kit
20 specifications	A Kingston Technology 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x4 View product	B Kingston Technology 4GB 667MHz FBDIMM Kit View product
Features2 differ
Internal memory	4 GB	4 GB
Memory layout (modules x size)Differs	1 x 4 GB	2 x 2 GB
Internal memory type	DDR2	DDR2
Memory form factorKnown for one	240-pin DIMM	Unknown — not stated by the source
ECCKnown for one	Yes	Unknown — not stated by the source
CAS latency	5	5
Memory bus	72 bit	72 bit
Buffered memory type	Registered (buffered)	Registered (buffered)
Memory rankingKnown for one	2	Unknown — not stated by the source
Memory voltageKnown for one	1.8 V	Unknown — not stated by the source
Module configurationDiffers	512M X 72	256M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Other features2 differ
Chips organisationKnown for one	X4	Unknown — not stated by the source
Bus clock rate	667 MHz	667 MHz
Error indicationDiffers	Parity	ECC
Form factor	240-pin DIMM	240-pin DIMM
Internal memory	4096 MB	4096 MB
Memory layoutDiffers	1 x 4096 MB	2 x 2048 MB
CompatibilityKnown for one	Unknown — not stated by the source	MA508G/A (Apple)

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.