Product comparison · 2 laptops

Lenovo ThinkPad E440 vs Lenovo ThinkPad E540

131specifications compared
26differ
105identical
53known for one product only

Key differences

Display diagonal
- ThinkPad E440:35.6 cm (14")
- ThinkPad E540:39.6 cm (15.6")
Processor family
- ThinkPad E440:Intel® Core™ i3
- ThinkPad E540:Intel® Core™ i5
Processor generation
- ThinkPad E440:4th gen Intel® Core™ i3
- ThinkPad E540:4th gen Intel® Core™ i5
Processor model
- ThinkPad E440:i3-4000M
- ThinkPad E540:i5-4200M
Processor boost frequency
- ThinkPad E440:3.2 GHz
- ThinkPad E540:3.1 GHz
Processor frequency
- ThinkPad E440:2.4 GHz
- ThinkPad E540:2.5 GHz
PCI Express slots version
- ThinkPad E440:2.0
- ThinkPad E540:3.0
Total storage capacity
- ThinkPad E440:500 GB
- ThinkPad E540:128 GB

Side by side

Differences highlightedShow differences only

Comparison of ThinkPad E440, ThinkPad E540
184 specifications	A Lenovo ThinkPad E440 View product	B Lenovo ThinkPad E540 View product
Designidentical
Product type	Laptop	Laptop
Product colour	Black	Black
Form factor	Clamshell	Clamshell
Housing materialKnown for one	Plastic	Unknown — not stated by the source
Market positioningKnown for one	Business	Unknown — not stated by the source
Display1 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
Touchscreen	Yes	Yes
Touchscreen typeKnown for one	Capacitive	Unknown — not stated by the source
Touch technologyKnown for one	Multi-touch	Unknown — not stated by the source
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
HD typeKnown for one	Unknown — not stated by the source	HD
Processor7 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i5
Processor generationDiffers	4th gen Intel® Core™ i3	4th gen Intel® Core™ i5
Processor modelDiffers	i3-4000M	i5-4200M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyDiffers	3.2 GHz	3.1 GHz
Processor frequencyDiffers	2.4 GHz	2.5 GHz
System bus rate	5 GT/s	5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
L3 cacheKnown for one	3 MB	Unknown — not stated by the source
Processor socket	PGA946	PGA946
Processor lithography	22 nm	22 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel® Core™ i3-4000 Mobile Series	Intel Core i5-4200 Mobile series
Processor codename	Haswell	Haswell
Bus type	DMI	DMI
FSB Parity	No	No
Stepping	C0	C0
Thermal Design Power (TDP)	37 W	37 W
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16, 2x8, 1x8+2x4	1x16, 2x8, 1x8+2x4
PCI Express slots versionDiffers	2.0	3.0
ECC supported by processor	No	No
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speedKnown for one	1600 MHz	Unknown — not stated by the source
Memory form factorKnown for one	SO-DIMM	Unknown — not stated by the source
Memory layout (slots x size)Known for one	1 x 4 GB	Unknown — not stated by the source
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memory	16 GB	16 GB
Storage2 differ
Total storage capacityDiffers	500 GB	128 GB
Storage mediaDiffers	HDD	SSD
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
HDD capacityKnown for one	500 GB	Unknown — not stated by the source
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
HDD speedKnown for one	7200 RPM	Unknown — not stated by the source
Optical drive type	DVD±RW	DVD±RW
Card reader integrated	Yes	Yes
Compatible memory cardsKnown for one	MMC, SD, SDHC, SDXC	Unknown — not stated by the source
Number of SSDs installedKnown for one	Unknown — not stated by the source	1
SSD capacityKnown for one	Unknown — not stated by the source	128 GB
Graphics2 differ
On-board graphics card	Yes	Yes
Discrete graphics cardKnown for one	No	Unknown — not stated by the source
Discrete graphics card modelKnown for one	Not available	Unknown — not stated by the source
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 4600	Intel® HD Graphics 4600
Maximum on-board graphics card memoryDiffers	2 GB	1.74 GB
On-board graphics card base frequency	400 MHz	400 MHz
On-board graphics card dynamic frequency (max)Differs	1100 MHz	1150 MHz
On-board graphics card DirectX version	11.1	11.1
On-board graphics card ID	0x416	0x416
Audio1 differ
Audio systemDiffers	Dolby Advanced Audio v2	Dolby Advanced 2.0
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Built-in microphone	Yes	Yes
Cameraidentical
Front camera	Yes	Yes
Optical driveidentical
LightScribeKnown for one	No	Unknown — not stated by the source
Network1 differ
Wi-Fi	Yes	Yes
Wi-Fi standardsDiffers	802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11a, 802.11b, 802.11g
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Bluetooth	Yes	Yes
Bluetooth version	4.0	4.0
Ports & interfaces1 differ
USB 2.0 ports quantity	1	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2	2
eSATA/USB 2.0 ports quantity	0	0
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantity	0	0
eSATA ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	1	1
DisplayPorts quantity	0	0
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) ports	0	0
Thunderbolt ports quantity	0	0
Headphone outputsDiffers	0	1
S/PDIF out port	No	No
Combo headphone/mic port	Yes	Yes
Microphone in	No	No
Docking connectorKnown for one	No	Unknown — not stated by the source
ExpressCard slotKnown for one	No	Unknown — not stated by the source
CardBus PCMCIA slots quantityKnown for one	0	Unknown — not stated by the source
CardBus PCMCIA slot typeKnown for one	No	Unknown — not stated by the source
SmartCard slotKnown for one	No	Unknown — not stated by the source
USB Sleep-and-Charge	Yes	Yes
USB Sleep-and-Charge ports	1	1
Mini DisplayPorts quantityKnown for one	Unknown — not stated by the source	0
Mini DisplayPort/Thunderbolt combo portKnown for one	Unknown — not stated by the source	No
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
Performanceidentical
Motherboard chipsetKnown for one	Intel® HM87	Unknown — not stated by the source
Keyboard1 differ
Pointing device	ThinkPad UltraNav	ThinkPad UltraNav
Numeric keypadDiffers	No	Yes
Spill-resistant keyboardKnown for one	Yes	Unknown — not stated by the source
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 Pro	Windows 8.1
Operating system architecture	64-bit	64-bit
Processor special features5 differ
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	No	No
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Identity Protection Technology version	1.00	1.00
Intel Rapid Storage Technology	No	No
Intel Secure Key Technology version	1.00	1.00
Intel TSX-NI	No	No
Intel TSX-NI version	0.00	0.00
Intel Trusted Execution Technology	No	No
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Anti-Theft Technology (Intel® AT)	Yes	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	No	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)	Yes	Yes
Intel® InTru™ 3D Technology	Yes	Yes
Intel® Insider™	Yes	Yes
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Small Business Advantage (Intel® SBA)Known for one	Yes	Unknown — not stated by the source
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Processor ARK IDDiffers	75104	76348
Processor codeDiffers	SR1HC	SR1HA
Processor package size	37.5 x 37.5 x 4.7 mm	37.5 x 37.5 x 4.7 mm
Supported instruction sets	AVX 2.0, SSE4.1, SSE4.2	AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	Yes	Yes
Batteryidentical
Battery technology	Lithium-Ion (Li-Ion)	Lithium-Ion (Li-Ion)
Number of battery cells	6	6
Battery capacityKnown for one	48 Wh	Unknown — not stated by the source
Battery life (max)Known for one	6 h	Unknown — not stated by the source
Poweridentical
AC adapter powerKnown for one	65 W	Unknown — not stated by the source
DC-in jack	Yes	Yes
AC adapter frequencyKnown for one	Unknown — not stated by the source	50 - 60 Hz
AC adapter input voltageKnown for one	Unknown — not stated by the source	100 - 240 V
Security1 differ
Cable lock slotDiffers	Yes	No
Password protectionKnown for one	Yes	Unknown — not stated by the source
Password protection typeKnown for one	HDD, Power on, Supervisor	Unknown — not stated by the source
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Certificatesidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
Sustainabilityidentical
Sustainability certificatesKnown for one	EPEAT Gold, ENERGY STAR	Unknown — not stated by the source
Weight & dimensions3 differ
WeightDiffers	2.43 kg	2.44 kg
WidthDiffers	344 mm	377 mm
DepthDiffers	239 mm	250 mm
Height (front)Known for one	2.97 cm	Unknown — not stated by the source
Height (rear)Known for one	3.23 cm	Unknown — not stated by the source
HeightKnown for one	Unknown — not stated by the source	26.6 mm
Packaging contentidentical
AC adapter included	Yes	Yes
ManualKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
64-bit computingKnown for one	Yes	Unknown — not stated by the source
Intel segment tagging	Home office, Small Business	Home office, Small Business
TV tuner integratedKnown for one	Unknown — not stated by the source	No

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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