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

8specifications compared
6differ
2identical
10known 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 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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V 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 HyperX 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2) has 0.25 V more memory voltage than the Kingston Technology 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V (1.8 V vs 1.55 V). Only the Kingston Technology 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V 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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V.

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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V: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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V: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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V: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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V: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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V:5
Memory voltage
- 4GB, 800MHz, DDR2, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2):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, Non-ECC, Ultra Low-Lat CL4 (4-4-4-12), SODIMM (Kit of 2), 8GB 667MHz DDR2 ECC Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V
18 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 Fully Buff CL5 DIMM (Kit of 2) Quad Rank, x8 1.55V View product
Features6 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	2 x 2 GB	2 x 4 GB
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 busKnown for one	64 bit	Unknown — not stated by the source
Buffered memory typeKnown for one	Unregistered (unbuffered)	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	256M X 64	Unknown — not stated by the source
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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