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 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8

9specifications compared
7differ
2identical
10known 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 HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2) (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 more CAS latency than the HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2) (5 vs 4). The Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 has 8 bit more memory bus than the HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2) (72 bit vs 64 bit). Only the Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 has ECC. Memory layout (modules x size): 2 x 2 GB on the HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2), 2 x 4 GB on the Kingston Technology 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8.

Internal memory
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):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, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):2 x 2 GB
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8:2 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
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) 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
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8:Yes
CAS latency
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):4
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) 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
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) 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)
- 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8:Registered (buffered)

Side by side

Differences highlightedShow differences only

Comparison of 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2), 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) 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 8GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Quad Rank, x8 View product
Features7 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	2 x 2 GB	2 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 platingKnown for one	Gold	Unknown — not stated by the source
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.

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