Product comparison · 2 nas & storage servers

QNAP TS-251-4G NAS/storage server Tower Intel® Celeron® vs QNAP TS-451-4G NAS/storage server Tower Intel® Celeron®

41specifications compared
11differ
30identical
4known for one product only

Key differences

Number of storage drives supported
- TS-251-4G NAS/storage server Tower Intel® Celeron®:2
- TS-451-4G NAS/storage server Tower Intel® Celeron®:4
Internal memory type
- TS-251-4G NAS/storage server Tower Intel® Celeron®:DDR3L
- TS-451-4G NAS/storage server Tower Intel® Celeron®:DDR3
Product colour
- TS-251-4G NAS/storage server Tower Intel® Celeron®:Grey, White
- TS-451-4G NAS/storage server Tower Intel® Celeron®:Grey, Silver
Power supply unit (PSU) capacity
- TS-251-4G NAS/storage server Tower Intel® Celeron®:60 W
- TS-451-4G NAS/storage server Tower Intel® Celeron®:90 W
Power consumption (typical)
- TS-251-4G NAS/storage server Tower Intel® Celeron®:19.22 W
- TS-451-4G NAS/storage server Tower Intel® Celeron®:31.07 W
Power consumption (sleep)
- TS-251-4G NAS/storage server Tower Intel® Celeron®:0.47 W
- TS-451-4G NAS/storage server Tower Intel® Celeron®:0.55 W
Width
- TS-251-4G NAS/storage server Tower Intel® Celeron®:102 mm
- TS-451-4G NAS/storage server Tower Intel® Celeron®:180 mm
Depth
- TS-251-4G NAS/storage server Tower Intel® Celeron®:225 mm
- TS-451-4G NAS/storage server Tower Intel® Celeron®:235 mm

Side by side

Differences highlightedShow differences only

Comparison of TS-251-4G, TS-451-4G
45 specifications	A QNAP TS-251-4G NAS/storage server Tower Intel® Celeron® Model TS-251-4G View product	B QNAP TS-451-4G NAS/storage server Tower Intel® Celeron® Model TS-451-4G View product
Storage1 differ
Storage drives installed	No	No
Number of storage drives installed	0	0
Number of storage drives supportedDiffers	2	4
Supported storage drive types	HDD & SSD	HDD & SSD
Storage drive interface	Serial ATA II, Serial ATA III	Serial ATA II, Serial ATA III
Storage drive size	2.5/3.5"	2.5/3.5"
RAID support	Yes	Yes
Hot-swap drive bays	Yes	Yes
Processoridentical
Processor family	Intel® Celeron®	Intel® Celeron®
Processor frequency	2.41 GHz	2.41 GHz
Processor cores	2	2
Memory1 differ
Internal memory	4 GB	4 GB
Internal memory typeDiffers	DDR3L	DDR3
Maximum RAM supportedKnown for one	Unknown — not stated by the source	8 GB
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Wi-Fi	No	No
DHCP clientKnown for one	Unknown — not stated by the source	Yes
DHCP serverKnown for one	Unknown — not stated by the source	Yes
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports	2	2
USB 2.0 ports quantity	2	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2	2
HDMI ports quantity	1	1
Design1 differ
Chassis type	Tower	Tower
Cooling type	Active	Active
Product colourDiffers	Grey, White	Grey, Silver
Number of fans	1 fan(s)	1 fan(s)
LED indicatorsKnown for one	Yes	Unknown — not stated by the source
Performanceidentical
Type	NAS	NAS
Device class	Home & Home Office	Home & Home Office
Softwareidentical
Operating system installed	QNAP Turbo System	QNAP Turbo System
Operating system version	4.1	4.1
Power3 differ
Power supply location	External	External
Power supply unit (PSU) capacityDiffers	60 W	90 W
Number of power supply units	1	1
Power consumption (typical)Differs	19.22 W	31.07 W
Power consumption (sleep)Differs	0.47 W	0.55 W
AC input voltage	100-240 V	100-240 V
Weight & dimensions5 differ
WidthDiffers	102 mm	180 mm
DepthDiffers	225 mm	235 mm
HeightDiffers	168.5 mm	177 mm
WeightDiffers	1.28 kg	3 kg
Package weightDiffers	2.32 kg	4.3 kg
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%

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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