Product comparison · 2 memory modules

HyperX 4GB DDR3L-1866 vs Kingston Technology 4 x 2GB DDR3 1333MHz ECC

Key differences

Internal memory
- 4GB DDR3L-1866:4 GB
- 4 x 2GB DDR3 1333MHz ECC:8 GB
Memory layout (modules x size)
- 4GB DDR3L-1866:1 x 4 GB
- 4 x 2GB DDR3 1333MHz ECC:4 x 2 GB
Internal memory type
- 4GB DDR3L-1866:DDR3L
- 4 x 2GB DDR3 1333MHz ECC:DDR3
Memory form factor
- 4GB DDR3L-1866:204-pin SO-DIMM
- 4 x 2GB DDR3 1333MHz ECC:240-pin DIMM
ECC
- 4GB DDR3L-1866:No
- 4 x 2GB DDR3 1333MHz ECC:Yes
CAS latency
- 4GB DDR3L-1866:11
- 4 x 2GB DDR3 1333MHz ECC:9
Memory bus
- 4GB DDR3L-1866:64 bit
- 4 x 2GB DDR3 1333MHz ECC:72 bit
Buffered memory type
- 4GB DDR3L-1866:Unregistered (unbuffered)
- 4 x 2GB DDR3 1333MHz ECC:Registered (buffered)

Differences highlightedShow differences only

Comparison of 4GB DDR3L-1866, 4 x 2GB DDR3 1333MHz ECC
27 specifications	A HyperX 4GB DDR3L-1866 View product	B Kingston Technology 4 x 2GB DDR3 1333MHz ECC View product
Features12 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	1 x 4 GB	4 x 2 GB
Internal memory typeDiffers	DDR3L	DDR3
Component forKnown for one	Laptop	Unknown — not stated by the source
Memory form factorDiffers	204-pin SO-DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	11	9
Memory clock speedKnown for one	1866 MHz	Unknown — not stated by the source
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltageDiffers	1.35 V	1.5 V
Module configurationDiffers	512M x 64	256M X 72
Row cycle timeDiffers	44.7 ns	49.5 ns
Refresh row cycle timeDiffers	260 ns	160 ns
Memory rankingKnown for one	Unknown — not stated by the source	1
Row active timeKnown for one	Unknown — not stated by the source	36 ns
Weight & dimensionsidentical
WidthKnown for one	67.6 mm	Unknown — not stated by the source
HeightKnown for one	30 mm	Unknown — not stated by the source
Other features4 differ
Bus clock rateDiffers	1866 MHz	1333 MHz
Error indicationDiffers	No	ECC
Internal memoryDiffers	4096 MB	8192 MB
Memory layoutDiffers	1 x 4096 MB	4 x 2048 MB
Chips organisationKnown for one	Unknown — not stated by the source	x8
Packaging dataidentical
Package typeKnown for one	Unknown — not stated by the source	DIMM

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.