Product comparison · 2 laptops

Dell Inspiron 3551 Intel® Celeron® N2840 Laptop vs Lenovo ThinkPad L450

141specifications compared
68differ
73identical
84known for one product only

Key differences

Display diagonal
- Inspiron 3551 Intel® Celeron® N2840 Laptop:39.6 cm (15.6")
- ThinkPad L450:35.6 cm (14")
Processor family
- Inspiron 3551 Intel® Celeron® N2840 Laptop:Intel® Celeron®
- ThinkPad L450:Intel® Core™ i5
Processor model
- Inspiron 3551 Intel® Celeron® N2840 Laptop:N2840
- ThinkPad L450:i5-5200U
Processor threads
- Inspiron 3551 Intel® Celeron® N2840 Laptop:2
- ThinkPad L450:4
Processor boost frequency
- Inspiron 3551 Intel® Celeron® N2840 Laptop:2.58 GHz
- ThinkPad L450:2.7 GHz
Processor frequency
- Inspiron 3551 Intel® Celeron® N2840 Laptop:2.16 GHz
- ThinkPad L450:2.2 GHz
Processor cache
- Inspiron 3551 Intel® Celeron® N2840 Laptop:1 MB
- ThinkPad L450:3 MB
Processor cache type
- Inspiron 3551 Intel® Celeron® N2840 Laptop:L2
- ThinkPad L450:Smart Cache

Side by side

Differences highlightedShow differences only

Comparison of 3551, ThinkPad L450
225 specifications	A Dell Inspiron 3551 Intel® Celeron® N2840 Laptop Model 3551 View product	B Lenovo ThinkPad L450 View product
Designidentical
Housing materialKnown for one	Unknown — not stated by the source	Plastic
Market positioningKnown for one	Business	Unknown — not stated by the source
Display1 differ
Display diagonalDiffers	39.6 cm (15.6")	35.6 cm (14")
HD typeKnown for one	Unknown — not stated by the source	HD
Display brightnessKnown for one	Unknown — not stated by the source	220 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	500:1
LED backlightKnown for one	Yes	Unknown — not stated by the source
Pixel pitchKnown for one	0.2520 x 0.2520 mm	Unknown — not stated by the source
Processor16 differ
Processor familyDiffers	Intel® Celeron®	Intel® Core™ i5
Processor generationKnown for one	Unknown — not stated by the source	5th gen Intel® Core™ i5
Processor modelDiffers	N2840	i5-5200U
Processor threadsDiffers	2	4
Processor boost frequencyDiffers	2.58 GHz	2.7 GHz
Processor frequencyDiffers	2.16 GHz	2.2 GHz
System bus rateKnown for one	Unknown — not stated by the source	5 GT/s
Processor cacheDiffers	1 MB	3 MB
Processor cache typeDiffers	L2	Smart Cache
Processor socketDiffers	BGA 1170	BGA 1168
Processor lithographyDiffers	22 nm	14 nm
Processor seriesDiffers	Intel Celeron Processor N2000 Series for Mobile	Intel® Core™ i5-5200 Mobile Series
Processor codenameDiffers	Bay Trail	Broadwell
Bus typeKnown for one	Unknown — not stated by the source	DMI2
SteppingDiffers	C0	F0
Thermal Design Power (TDP)Differs	7.5 W	15 W
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
TjunctionDiffers	100 °C	105 °C
Maximum number of PCI Express lanesDiffers	4	12
PCI Express configurationsDiffers	1x4	4x1, 2x4
Scenario Design Power (SDP)Known for one	4.5 W	Unknown — not stated by the source
Memory4 differ
Memory clock speedDiffers	1333 MHz	1600 MHz
Memory slotsDiffers	1x SO-DIMM	2x SO-DIMM
Maximum internal memoryDiffers	4 GB	16 GB
Maximum internal memory (64-bit)Differs	4 GB	16 GB
Storage3 differ
HDD interfaceDiffers	SATA II	SATA III
HDD speedDiffers	5400 RPM	7200 RPM
Number of SSDs installedKnown for one	Unknown — not stated by the source	0
Compatible memory cardsDiffers	SD	MMC, SD, SDHC, SDXC
Graphics3 differ
On-board graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 5500
Maximum on-board graphics card memoryKnown for one	Unknown — not stated by the source	16 GB
On-board graphics card base frequencyDiffers	311 MHz	300 MHz
On-board graphics card dynamic frequency (max)Differs	792 MHz	900 MHz
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
On-board graphics card burst frequencyKnown for one	792 MHz	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	MaxxAudio	High Definition Audio
Built-in subwooferKnown for one	Unknown — not stated by the source	No
Speakers manufacturerKnown for one	Waves	Unknown — not stated by the source
Cameraidentical
Rear cameraKnown for one	Unknown — not stated by the source	No
Front camera resolution (numeric)Known for one	0.92 MP	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)	Wi-Fi 5 (802.11ac)
Ethernet LANDiffers	No	Yes
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	2	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	1	3
Micro-USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	0
Micro-USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	Unknown — not stated by the source	0
eSATA/USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	0
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	Unknown — not stated by the source	0
eSATA ports quantityKnown for one	Unknown — not stated by the source	0
Ethernet LAN (RJ-45) portsDiffers	0	1
HDMI ports quantityDiffers	1	0
Mini DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
Mini DisplayPort/Thunderbolt combo portKnown for one	Unknown — not stated by the source	No
VGA (D-Sub) ports quantityDiffers	0	1
Firewire (IEEE 1394) portsKnown for one	Unknown — not stated by the source	0
Thunderbolt 2 ports quantityKnown for one	Unknown — not stated by the source	0
Mini HDMI ports quantityKnown for one	Unknown — not stated by the source	0
Micro HDMI ports quantityKnown for one	Unknown — not stated by the source	0
LAN/VGA combo portKnown for one	Unknown — not stated by the source	No
Mini VGA ports quantityKnown for one	Unknown — not stated by the source	0
Headphone outputsDiffers	0	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
Docking connectorKnown for one	No	Unknown — not stated by the source
Total number of SATA connectorsKnown for one	2	Unknown — not stated by the source
Keyboard1 differ
Numeric keypadDiffers	Yes	No
Full-size keyboardKnown for one	Yes	Unknown — not stated by the source
Windows keysKnown for one	Yes	Unknown — not stated by the source
Software1 differ
Operating system installedDiffers	Windows 8.1	Windows 7 Professional
Recovery operating systemKnown for one	Unknown — not stated by the source	Windows 8.1 Pro
Operating system languageKnown for one	Multilingual	Unknown — not stated by the source
Trial softwareKnown for one	Microsoft Office	Unknown — not stated by the source
Bundled softwareKnown for one	McAfee LiveSafe 1YR	Unknown — not stated by the source
Processor special features22 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 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 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® 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® 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® OS GuardKnown for one	Unknown — not stated by the source	Yes
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	85212
Processor codeDiffers	SR1YJ	SR23Y
Processor package sizeDiffers	25 x 27 mm	40 x 24 x 1.3 mm
Supported instruction setsKnown for one	Unknown — not stated by the source	AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring TechnologiesDiffers	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® Active Management Technology (Intel® AMT)Known for one	No	Unknown — not stated by the source
Intel® High Definition Audio (Intel® HD Audio)Known for one	No	Unknown — not stated by the source
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
Battery2 differ
Battery technologyDiffers	Lithium	Lithium-Ion (Li-Ion)
Number of battery cellsDiffers	4	6
Battery capacityKnown for one	Unknown — not stated by the source	48 Wh
Battery life (max)Known for one	Unknown — not stated by the source	10.7 h
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
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 currentKnown for one	2.31 A	Unknown — not stated by the source
AC adapter output voltageKnown for one	19.5 V	Unknown — not stated by the source
Security1 differ
Cable lock slotDiffers	Yes	No
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
Password protectionKnown for one	Unknown — not stated by the source	Yes
Password protection typeKnown for one	Unknown — not stated by the source	HDD, Power on, Supervisor
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Weight & dimensions4 differ
WeightDiffers	2.2 kg	2.01 kg
WidthDiffers	380 mm	339 mm
DepthDiffers	260.3 mm	235 mm
HeightDiffers	21.7 mm	24.3 mm
Packaging contentidentical
Quick start guideKnown for one	Unknown — not stated by the source	Yes
Warranty cardKnown for one	Unknown — not stated by the source	Yes
Other features1 differ
3DKnown for one	Unknown — not stated by the source	No
Intel segment taggingDiffers	Home office	Home office, Small Business
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
Sustainabilityidentical
Sustainability certificatesKnown for one	EPEAT Bronze, ENERGY STAR	Unknown — not stated by the source

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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