Product comparison · 2 laptops

Dell Inspiron 3451 Intel® Celeron® N2840 Laptop vs Lenovo ThinkPad X250

139specifications compared
69differ
70identical
74known for one product only

Key differences

Display diagonal
- Inspiron 3451 Intel® Celeron® N2840 Laptop:35.6 cm (14")
- ThinkPad X250:31.8 cm (12.5")
Processor family
- Inspiron 3451 Intel® Celeron® N2840 Laptop:Intel® Celeron®
- ThinkPad X250:Intel® Core™ i5
Processor model
- Inspiron 3451 Intel® Celeron® N2840 Laptop:N2840
- ThinkPad X250:i5-5300U
Processor threads
- Inspiron 3451 Intel® Celeron® N2840 Laptop:2
- ThinkPad X250:4
Processor boost frequency
- Inspiron 3451 Intel® Celeron® N2840 Laptop:2.58 GHz
- ThinkPad X250:2.9 GHz
Processor frequency
- Inspiron 3451 Intel® Celeron® N2840 Laptop:2.16 GHz
- ThinkPad X250:2.3 GHz
Processor cache
- Inspiron 3451 Intel® Celeron® N2840 Laptop:1 MB
- ThinkPad X250:3 MB
Processor cache type
- Inspiron 3451 Intel® Celeron® N2840 Laptop:L2
- ThinkPad X250:L3

Side by side

Differences highlightedShow differences only

Comparison of 3451, ThinkPad X250
213 specifications	A Dell Inspiron 3451 Intel® Celeron® N2840 Laptop Model 3451 View product	B Lenovo ThinkPad X250 View product
Designidentical
Market positioningKnown for one	Business	Unknown — not stated by the source
Housing materialKnown for one	Unknown — not stated by the source	Glass fibre, Plastic
Display1 differ
Display diagonalDiffers	35.6 cm (14")	31.8 cm (12.5")
Pixel pitchKnown for one	0.2520 x 0.2520 mm	Unknown — not stated by the source
Display brightnessKnown for one	Unknown — not stated by the source	200 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	300:1
Processor16 differ
Processor familyDiffers	Intel® Celeron®	Intel® Core™ i5
Processor modelDiffers	N2840	i5-5300U
Processor threadsDiffers	2	4
Processor boost frequencyDiffers	2.58 GHz	2.9 GHz
Processor frequencyDiffers	2.16 GHz	2.3 GHz
Processor cacheDiffers	1 MB	3 MB
Processor cache typeDiffers	L2	L3
Processor socketDiffers	BGA 1170	BGA 1168
Processor lithographyDiffers	22 nm	14 nm
Processor seriesDiffers	Intel Celeron Processor N2000 Series for Mobile	Intel® Core™ i5-5300 Mobile Series
Processor codenameDiffers	Bay Trail	Broadwell
SteppingDiffers	C0	F0
Thermal Design Power (TDP)Differs	7.5 W	15 W
Scenario Design Power (SDP)Known for one	4.5 W	Unknown — not stated by the source
TjunctionDiffers	100 °C	105 °C
Maximum number of PCI Express lanesDiffers	4	12
PCI Express configurationsDiffers	1x4	4x1, 2x4
Processor generationKnown for one	Unknown — not stated by the source	5th gen Intel® Core™ i5
System bus rateKnown for one	Unknown — not stated by the source	5 GT/s
Bus typeKnown for one	Unknown — not stated by the source	DMI2
Configurable TDP-downKnown for one	Unknown — not stated by the source	7.5 W
Configurable TDP-down frequencyKnown for one	Unknown — not stated by the source	0.6 GHz
Memory5 differ
Internal memoryDiffers	2 GB	4 GB
Memory clock speedDiffers	1333 MHz	1600 MHz
Memory layout (slots x size)Differs	1 x 2 GB	1 x 4 GB
Maximum internal memoryDiffers	4 GB	8 GB
Maximum internal memory (64-bit)Differs	4 GB	8 GB
Storage3 differ
HDD interfaceDiffers	SATA II	SATA III
HDD speedDiffers	5400 RPM	7200 RPM
Compatible memory cardsDiffers	SD	MMC, SD, SDHC, SDXC
Graphics3 differ
On-board graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 5500
On-board graphics card base frequencyDiffers	311 MHz	300 MHz
On-board graphics card burst frequencyKnown for one	792 MHz	Unknown — not stated by the source
On-board graphics card dynamic frequency (max)Differs	792 MHz	900 MHz
Maximum on-board graphics card memoryKnown for one	Unknown — not stated by the source	16 GB
On-board graphics card DirectX versionKnown for one	Unknown — not stated by the source	11.2
On-board graphics card IDKnown for one	Unknown — not stated by the source	0x1616
Maximum resolutionKnown for one	Unknown — not stated by the source	3840 x 2160 pixels
Graphics card Open GL supportKnown for one	Unknown — not stated by the source	Yes
Audio1 differ
Audio systemDiffers	MaxxAudio	Dolby Advanced Audio
Speakers manufacturerKnown for one	Waves	Unknown — not stated by the source
Speaker powerKnown for one	Unknown — not stated by the source	1.5 W
Cameraidentical
Front camera resolution (numeric)Known for one	0.92 MP	Unknown — not stated by the source
Front camera resolutionKnown for one	1280 x 720 pixels	Unknown — not stated by the source
Video capturing speedKnown for one	30 fps	Unknown — not stated by the source
Network2 differ
Wi-Fi standardsDiffers	802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LANDiffers	No	Yes
Ethernet LAN data ratesKnown for one	Unknown — not stated by the source	10,100,1000 Mbit/s
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	2	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	1	2
Ethernet LAN (RJ-45) portsDiffers	0	1
HDMI ports quantityDiffers	1	0
VGA (D-Sub) ports quantityDiffers	0	1
Headphone outputsKnown for one	0	Unknown — not stated by the source
Microphone inKnown for one	No	Unknown — not stated by the source
Docking connectorDiffers	No	Yes
Total number of SATA connectorsKnown for one	2	Unknown — not stated by the source
Mini DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
USB Sleep-and-ChargeKnown for one	Unknown — not stated by the source	Yes
USB Sleep-and-Charge portsKnown for one	Unknown — not stated by the source	1
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Full-size keyboardKnown for one	Yes	Unknown — not stated by the source
Keyboard languageKnown for one	UK English	Unknown — not stated by the source
Keyboard backlitKnown for one	Unknown — not stated by the source	Yes
Software1 differ
Operating system installedDiffers	Windows 8.1	Windows 7 Professional
Trial softwareKnown for one	Microsoft Office	Unknown — not stated by the source
Operating system architectureKnown for one	Unknown — not stated by the source	64-bit
Processor special features23 differ
Graphics & IMC lithographyDiffers	22 nm	14 nm
Intel Clear Video TechnologyDiffers	No	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory AccessDiffers	No	Yes
Intel Flex Memory AccessDiffers	No	Yes
Intel Smart Connect TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Smart Connect Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Differs	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Active Management Technology (Intel® AMT)Known for one	No	Unknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	No	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Differs	No	Yes
Intel® High Definition Audio (Intel® HD Audio)Known for one	No	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Identity Protection Technology (Intel® IPT)Differs	No	Yes
Intel® InTru™ 3D TechnologyDiffers	No	Yes
Intel® Insider™Differs	No	Yes
Intel® Matrix Storage Technology (Intel® MST)Known for one	No	Unknown — not stated by the source
Intel® Rapid Start TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Small Business Advantage (Intel® SBA)Differs	No	Yes
Intel® Smart Response TechnologyDiffers	No	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Intel® Virtualization Technology (Intel® VT)Differs	VT-x	VT-d, VT-x
Processor ARK IDDiffers	82103	85213
Processor codeDiffers	SR1YJ	SR23X
Processor package sizeDiffers	25 x 27 mm	40 x 24 x 1.3 mm
Thermal Monitoring TechnologiesDiffers	No	Yes
Intel Identity Protection Technology versionKnown for one	Unknown — not stated by the source	1.00
Intel Small Business Advantage (SBA) versionKnown for one	Unknown — not stated by the source	1.00
Intel Smart Response Technology versionKnown for one	Unknown — not stated by the source	1.00
Intel Stable Image Platform Program (SIPP)Known for one	Unknown — not stated by the source	Yes
Intel Stable Image Platform Program (SIPP) versionKnown for one	Unknown — not stated by the source	1.00
Intel TSX-NIKnown for one	Unknown — not stated by the source	Yes
Intel TSX-NI versionKnown for one	Unknown — not stated by the source	1.00
Intel® OS GuardKnown for one	Unknown — not stated by the source	Yes
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Supported instruction setsKnown for one	Unknown — not stated by the source	AVX 2.0
Battery1 differ
Number of battery cellsDiffers	4	6
Battery voltageKnown for one	14.8 V	Unknown — not stated by the source
Battery recharge timeKnown for one	4 h	Unknown — not stated by the source
Battery capacityKnown for one	Unknown — not stated by the source	48 Wh
Poweridentical
AC adapter frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
AC adapter input voltageKnown for one	100 - 240 V	Unknown — not stated by the source
AC adapter output voltageKnown for one	19.5 V	Unknown — not stated by the source
Securityidentical
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Trusted Platform Module (TPM)Known for one	Unknown — not stated by the source	Yes
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 35 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 65 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	10 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	0 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	-15.2 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-15.2 - 10668 m	Unknown — not stated by the source
Operating shockKnown for one	110 G	Unknown — not stated by the source
Non-operating shockKnown for one	160 G	Unknown — not stated by the source
Operating vibrationKnown for one	0.66 G	Unknown — not stated by the source
Non-operating vibrationKnown for one	1.30 G	Unknown — not stated by the source
Sustainability1 differ
Sustainability certificatesDiffers	EPEAT Bronze, ENERGY STAR	EPEAT Gold, ENERGY STAR
Weight & dimensions4 differ
WeightDiffers	1.9 kg	1.47 kg
WidthDiffers	345 mm	305.5 mm
DepthDiffers	243 mm	208.5 mm
HeightDiffers	21.4 mm	20.3 mm
Packaging contentidentical
ManualKnown for one	Yes	Unknown — not stated by the source
Other features1 differ
Intel segment taggingDiffers	Home office	Home office, Small Business
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel SoC
Certificatesidentical
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Wi-Fi certifiedKnown for one	Unknown — not stated by the source	Yes
CertificationKnown for one	Unknown — not stated by the source	GREENGUARD

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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