Product comparison · 2 memory modules

HyperX 4GB DDR3L-1866 vs Kingston Technology ValueRAM KVR21L15Q4/32 memory module

Key differences

Internal memory
- 4GB DDR3L-1866:4 GB
- ValueRAM KVR21L15Q4/32 memory module:32 GB
Internal memory type
- 4GB DDR3L-1866:DDR3L
- ValueRAM KVR21L15Q4/32 memory module:DDR4
Component for
- 4GB DDR3L-1866:Laptop
- ValueRAM KVR21L15Q4/32 memory module:PC/Server
Memory form factor
- 4GB DDR3L-1866:204-pin SO-DIMM
- ValueRAM KVR21L15Q4/32 memory module:288-pin DIMM
ECC
- 4GB DDR3L-1866:No
- ValueRAM KVR21L15Q4/32 memory module:Yes
CAS latency
- 4GB DDR3L-1866:11
- ValueRAM KVR21L15Q4/32 memory module:15
Memory bus
- 4GB DDR3L-1866:64 bit
- ValueRAM KVR21L15Q4/32 memory module:72 bit
Memory voltage
- 4GB DDR3L-1866:1.35 V
- ValueRAM KVR21L15Q4/32 memory module:1.2 V

Differences highlightedShow differences only

Comparison of 4GB DDR3L-1866, KVR21L15Q4/32
26 specifications	A HyperX 4GB DDR3L-1866 View product	B Kingston Technology ValueRAM KVR21L15Q4/32 memory module Model KVR21L15Q4/32 View product
Features10 differ
Internal memoryDiffers	4 GB	32 GB
Internal memory typeDiffers	DDR3L	DDR4
Component forDiffers	Laptop	PC/Server
Memory form factorDiffers	204-pin SO-DIMM	288-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	11	15
Memory busDiffers	64 bit	72 bit
Buffered memory type	Unregistered (unbuffered)	Unregistered (unbuffered)
Memory rankingKnown for one	Unknown — not stated by the source	4
Memory voltageDiffers	1.35 V	1.2 V
Module configurationDiffers	512M x 64	4G X 72
Row cycle timeDiffers	44.7 ns	47.06 ns
Refresh row cycle time	260 ns	260 ns
Row active timeKnown for one	Unknown — not stated by the source	33 ns
Lead plating	Gold	Gold
Memory layout (modules x size)Known for one	1 x 4 GB	Unknown — not stated by the source
Memory clock speedKnown for one	1866 MHz	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 & dimensions2 differ
WidthDiffers	67.6 mm	133.3 mm
HeightDiffers	30 mm	31.2 mm
Other features4 differ
Chips organisationKnown for one	Unknown — not stated by the source	X4
Bus clock rateDiffers	1866 MHz	2133 MHz
Error indicationDiffers	No	ECC
Internal memoryDiffers	4096 MB	32768 MB
Memory layoutDiffers	1 x 4096 MB	1 x 32768 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.