Product comparison · 2 nas & storage servers

QNAP TS-420 2x2TB vs QNAP TS-421U 4x2TB

Key differences

Differences highlightedShow differences only

Comparison of TS-420 2x2TB, TS-421U 4x2TB
65 specifications	A QNAP TS-420 2x2TB View product	B QNAP TS-421U 4x2TB View product
Storage2 differ
Total installed storage capacityDiffers	4 TB	8 TB
Number of storage drives installedDiffers	2	4
Processor1 differ
Processor frequencyDiffers	1.6 GHz	2 GHz
Memory1 differ
Internal memoryDiffers	0.5 GB	1 GB
Design3 differ
Chassis typeDiffers	Tower	Rack (1U)
Number of fansDiffers	1 fan(s)	2 fan(s)
LED indicatorsDiffers	eSATA, HDD, LAN, Power, Status, USB	HDD, LAN, Status, USB
Display typeKnown for one	LCD	Unknown — not stated by the source
Performance1 differ
Security algorithmsDiffers	SSL/TLS	HTTPS, SSL/TLS
Power3 differ
Power consumption (typical)Differs	31 W	33 W
Power consumption (sleep)Differs	13 W	12 W
Output powerDiffers	120 W	250 W
Weight & dimensions5 differ
WidthDiffers	235 mm	483 mm
DepthDiffers	180 mm	439 mm
HeightDiffers	177 mm	44 mm
WeightDiffers	3 kg	6.7 kg
Package weightDiffers	4.6 kg	11.1 kg

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.