Product comparison · 2 memory modules

Kingston Technology 2x 16GB DDR4 vs Kingston Technology KVR21N15D8/16BK memory module

Key differences

Internal memory
- 2x 16GB DDR4:32 GB
- KVR21N15D8/16BK memory module:16 GB
Memory layout (modules x size)
- 2x 16GB DDR4:2 x 16 GB
- KVR21N15D8/16BK memory module:1 x 16 GB
ECC
- 2x 16GB DDR4:No
- KVR21N15D8/16BK memory module:Yes
Height
- 2x 16GB DDR4:31.2 mm
- KVR21N15D8/16BK memory module:31 mm

Differences highlightedShow differences only

Comparison of 2x 16GB DDR4, KVR21N15D8/16BK
20 specifications	A Kingston Technology 2x 16GB DDR4 View product	B Kingston Technology KVR21N15D8/16BK memory module Model KVR21N15D8/16BK View product
Features3 differ
Internal memoryDiffers	32 GB	16 GB
Memory layout (modules x size)Differs	2 x 16 GB	1 x 16 GB
Internal memory type	DDR4	DDR4
Component for	PC/Server	PC/Server
Memory form factor	288-pin DIMM	288-pin DIMM
ECCDiffers	No	Yes
CAS latency	15	15
Buffered memory type	Unregistered (unbuffered)	Unregistered (unbuffered)
Memory voltage	1.2 V	1.2 V
Row cycle timeKnown for one	Unknown — not stated by the source	46.5 ns
Refresh row cycle timeKnown for one	Unknown — not stated by the source	350 ns
Row active timeKnown for one	Unknown — not stated by the source	33 ns
Memory bandwidth (max)Known for one	Unknown — not stated by the source	8 GB/s
Product colourKnown for one	Unknown — not stated by the source	Black, Green
Lead platingKnown for one	Unknown — not stated by the source	Gold
Memory rankingKnown for one	2	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)	0 - 85 °C	0 - 85 °C
Storage temperature (T-T)	-55 - 100 °C	-55 - 100 °C
Weight & dimensions1 differ
Width	133.3 mm	133.3 mm
HeightDiffers	31.2 mm	31 mm

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.