Product comparison · 2 memory modules

Kingston Technology 4GB DDR4 2133MHz vs Kingston Technology KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM

23specifications compared
8differ
15identical
8known for one product only

Key differences

Internal memory
- 4GB DDR4 2133MHz:4 GB
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:8 GB
Memory layout (modules x size)
- 4GB DDR4 2133MHz:1 x 4 GB
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:1 x 8 GB
Component for
- 4GB DDR4 2133MHz:PC/Server
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:PC
Memory ranking
- 4GB DDR4 2133MHz:1
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:2
Module configuration
- 4GB DDR4 2133MHz:512M x 8
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:1024M x 64
Product colour
- 4GB DDR4 2133MHz:Black, Green
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:Green
Internal memory
- 4GB DDR4 2133MHz:4096 MB
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:8192 MB
Memory layout
- 4GB DDR4 2133MHz:1 x 4096 MB
- KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM:1 x 8192 MB

Side by side

Differences highlightedShow differences only

Comparison of 4GB DDR4 2133MHz, KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM
31 specifications	A Kingston Technology 4GB DDR4 2133MHz View product	B Kingston Technology KVR21N15D8/8 Kingston 8GB DDR4 2133MHz PC4-17000 UDIMM View product
Features6 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	1 x 4 GB	1 x 8 GB
Internal memory type	DDR4	DDR4
Component forDiffers	PC/Server	PC
Memory form factor	288-pin DIMM	288-pin DIMM
ECC	No	No
CAS latency	15	15
Memory bus	64 bit	64 bit
Buffered memory type	Unregistered (unbuffered)	Unregistered (unbuffered)
Memory rankingDiffers	1	2
Memory voltage	1.2 V	1.2 V
Module configurationDiffers	512M x 8	1024M x 64
Row cycle timeKnown for one	46.5 ns	Unknown — not stated by the source
Refresh row cycle timeKnown for one	260 ns	Unknown — not stated by the source
Row active timeKnown for one	33 ns	Unknown — not stated by the source
SPD profileKnown for one	Yes	Unknown — not stated by the source
Product colourDiffers	Black, Green	Green
Lead plating	Gold	Gold
Memory data transfer rateKnown for one	Unknown — not stated by the source	2133 MT/s
Memory clock speedKnown for one	Unknown — not stated by the source	2133 MHz
BacklightKnown for one	Unknown — not stated by the source	No
Operational conditionsidentical
Operating temperature (T-T)	0 - 85 °C	0 - 85 °C
Storage temperature (T-T)	-55 - 100 °C	-55 - 100 °C
Weight & dimensionsidentical
Width	133.3 mm	133.3 mm
Height	31.2 mm	31.2 mm
Other features2 differ
Chips organisation	X8	X8
Bus clock rate	2133 MHz	2133 MHz
Error indication	No	No
Internal memoryDiffers	4096 MB	8192 MB
Memory layoutDiffers	1 x 4096 MB	1 x 8192 MB
Country of originKnown for one	Unknown — not stated by the source	China

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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