Product comparison · 2 memory modules

HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2) vs Kingston Technology 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8

Key differences

Memory layout (modules x size)
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):2 x 2 GB
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8:1 x 4 GB
Memory form factor
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):200-pin SO-DIMM
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8:240-pin DIMM
ECC
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):No
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8:Yes
CAS latency
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):4
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8:5
Memory bus
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):64 bit
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8:72 bit
Buffered memory type
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):Unregistered (unbuffered)
- 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8:Registered (buffered)

Differences highlightedShow differences only

Comparison of 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2), 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8
19 specifications	A HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2)View product	B Kingston Technology 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Quad Rank, x8 View product
Features6 differ
Internal memory	4 GB	4 GB
Memory layout (modules x size)Differs	2 x 2 GB	1 x 4 GB
Internal memory type	DDR2	DDR2
Memory form factorDiffers	200-pin SO-DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	4	5
Memory clock speedKnown for one	800 MHz	Unknown — not stated by the source
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	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	256M X 64	Unknown — not stated by the source
Lead plating	Gold	Gold
Memory typeKnown for one	Unknown — not stated by the source	DDR2
Other featuresidentical
Chips organisationKnown for one	X8	Unknown — not stated by the source
Bus clock rateKnown for one	800 MHz	Unknown — not stated by the source
Error indicationKnown for one	No	Unknown — not stated by the source
Internal memoryKnown for one	4096 MB	Unknown — not stated by the source
Memory layoutKnown for one	2 x 2048 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.