Product comparison · 2 memory modules

Kingston Technology 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4 vs Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8

10specifications compared
3differ
7identical
9known for one product only

Key differences

The Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 has 4 GB more internal memory than the Kingston Technology 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4 (8 GB vs 4 GB). The Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 has 1 x 4 GB more memory layout (modules x size) than the Kingston Technology 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4 (2 x 4 GB vs 1 x 4 GB). The Kingston Technology 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4 has 1 more CAS latency than the Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 (6 vs 5).

Internal memory
- 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4:4 GB
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8:8 GB
Memory layout (modules x size)
- 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4:1 x 4 GB
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8:2 x 4 GB
CAS latency
- 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4:6
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8:5

Side by side

Differences highlightedShow differences only

Comparison of 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4, 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8
19 specifications	A Kingston Technology 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4 View product	B Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 View product
Features3 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	1 x 4 GB	2 x 4 GB
Internal memory type	DDR2	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latencyDiffers	6	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 voltage	1.8 V	1.8 V
Module configurationKnown for one	512M X 72	Unknown — not stated by the source
Memory type	DDR2	DDR2
Lead platingKnown for one	Gold	Unknown — not stated by the source
Other featuresidentical
Chips organisationKnown for one	X4	Unknown — not stated by the source
Bus clock rateKnown for one	800 MHz	Unknown — not stated by the source
Error indicationKnown for one	Parity	Unknown — not stated by the source
Form factorKnown for one	240-pin DIMM	Unknown — not stated by the source
Internal memoryKnown for one	4096 MB	Unknown — not stated by the source
Memory layoutKnown for one	1 x 4096 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.

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