Product comparison · 2 memory modules

HyperX Black 8GB DDR4 2666MHz Kit vs Kingston Technology 4GB 1866MHz DDR3

24specifications compared
13differ
11identical
14known for one product only

Key differences

The HyperX Black 8GB DDR4 2666MHz Kit has 4 GB more internal memory than the Kingston Technology 4GB 1866MHz DDR3 (8 GB vs 4 GB). The HyperX Black 8GB DDR4 2666MHz Kit has 1 x 4 GB more memory layout (modules x size) than the Kingston Technology 4GB 1866MHz DDR3 (2 x 4 GB vs 1 x 4 GB). The HyperX Black 8GB DDR4 2666MHz Kit has 48 -pin DIMM more memory form factor than the Kingston Technology 4GB 1866MHz DDR3 (288-pin DIMM vs 240-pin DIMM). Internal memory type: DDR4 on the HyperX Black 8GB DDR4 2666MHz Kit, DDR3 on the Kingston Technology 4GB 1866MHz DDR3. Buffered memory type: Unregistered (unbuffered) on the HyperX Black 8GB DDR4 2666MHz Kit, Registered (buffered) on the Kingston Technology 4GB 1866MHz DDR3.

Internal memory
- Black 8GB DDR4 2666MHz Kit:8 GB
- 4GB 1866MHz DDR3:4 GB
Memory layout (modules x size)
- Black 8GB DDR4 2666MHz Kit:2 x 4 GB
- 4GB 1866MHz DDR3:1 x 4 GB
Internal memory type
- Black 8GB DDR4 2666MHz Kit:DDR4
- 4GB 1866MHz DDR3:DDR3
Memory form factor
- Black 8GB DDR4 2666MHz Kit:288-pin DIMM
- 4GB 1866MHz DDR3:240-pin DIMM
CAS latency
- Black 8GB DDR4 2666MHz Kit:15
- 4GB 1866MHz DDR3:13
Buffered memory type
- Black 8GB DDR4 2666MHz Kit:Unregistered (unbuffered)
- 4GB 1866MHz DDR3:Registered (buffered)
Memory voltage
- Black 8GB DDR4 2666MHz Kit:1.2 V
- 4GB 1866MHz DDR3:1.5 V
Module configuration
- Black 8GB DDR4 2666MHz Kit:512M x 64
- 4GB 1866MHz DDR3:512M x 72

Side by side

Differences highlightedShow differences only

Comparison of Black 8GB DDR4 2666MHz Kit, 4GB 1866MHz DDR3
38 specifications	A HyperX Black 8GB DDR4 2666MHz Kit View product	B Kingston Technology 4GB 1866MHz DDR3 View product
Features12 differ
Internal memoryDiffers	8 GB	4 GB
Memory layout (modules x size)Differs	2 x 4 GB	1 x 4 GB
Internal memory typeDiffers	DDR4	DDR3
Memory form factorDiffers	288-pin DIMM	240-pin DIMM
CAS latencyDiffers	15	13
Memory clock speedKnown for one	2666 MHz	Unknown — not stated by the source
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltageDiffers	1.2 V	1.5 V
Module configurationDiffers	512M x 64	512M x 72
Row cycle timeDiffers	45 ns	47.125 ns
Row active timeDiffers	26.25 ns	34 ns
Intel Extreme Memory Profile (XMP)Known for one	Yes	Unknown — not stated by the source
SPD profileKnown for one	Yes	Unknown — not stated by the source
Compatible chipsetsKnown for one	Intel® X99	Unknown — not stated by the source
Memory typeDiffers	PC-21300	PC3-14900
Product colourDiffers	Black	Black, Green
Cooling typeKnown for one	Heatsink	Unknown — not stated by the source
ECCKnown for one	Unknown — not stated by the source	Yes
Memory busKnown for one	Unknown — not stated by the source	72 bit
Weight & dimensionsidentical
WidthKnown for one	133.3 mm	Unknown — not stated by the source
DepthKnown for one	7.08 mm	Unknown — not stated by the source
HeightKnown for one	34 mm	Unknown — not stated by the source
Other features1 differ
Number of pinsDiffers	288	240
Bus clock rateKnown for one	Unknown — not stated by the source	1866 MHz
Error indicationKnown for one	Unknown — not stated by the source	ECC
Internal memoryKnown for one	Unknown — not stated by the source	4096 MB
Memory layoutKnown for one	Unknown — not stated by the source	1 x 4096 MB

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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