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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V

8specifications compared
4differ
4identical
11known for one product only

Key differences

The Kingston Technology 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V 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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V 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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V (6 vs 5).

Internal memory
- 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4:4 GB
- 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V: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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V:2 x 4 GB
CAS latency
- 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4:6
- 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V:5
Memory voltage
- 4GB, 800MHz, DDR2, ECC Reg w/ Parity CL6 DIMM Dual Rank, x4:1.8 V
- 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V:1.55 V

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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V
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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V View product
Features4 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 busKnown for one	72 bit	Unknown — not stated by the source
Buffered memory typeKnown for one	Registered (buffered)	Unknown — not stated by the source
Memory rankingKnown for one	2	Unknown — not stated by the source
Memory voltageDiffers	1.8 V	1.55 V
Module configurationKnown for one	512M X 72	Unknown — not stated by the source
Memory typeKnown for one	DDR2	Unknown — not stated by the source
Lead plating	Gold	Gold
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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