Product comparison · 2 laptops

Lenovo Flex 2 Pro vs Lenovo X240 Win8.1 US

153specifications compared
44differ
109identical
43known for one product only

Key differences

Product type
- Flex 2 Pro:Hybrid (2-in-1)
- X240 Win8.1 US:Laptop
Display diagonal
- Flex 2 Pro:39.6 cm (15.6")
- X240 Win8.1 US:31.8 cm (12.5")
Touchscreen
- Flex 2 Pro:Yes
- X240 Win8.1 US:No
Processor family
- Flex 2 Pro:Intel® Core™ i7
- X240 Win8.1 US:Intel® Core™ i5
Processor generation
- Flex 2 Pro:4th gen Intel® Core™ i7
- X240 Win8.1 US:4th gen Intel® Core™ i5
Processor model
- Flex 2 Pro:i7-4510U
- X240 Win8.1 US:i5-4300U
Processor boost frequency
- Flex 2 Pro:3.1 GHz
- X240 Win8.1 US:2.9 GHz
Processor frequency
- Flex 2 Pro:2 GHz
- X240 Win8.1 US:1.9 GHz

Side by side

Differences highlightedShow differences only

Comparison of Flex 2 Pro, X240 Win8.1 US
196 specifications	A Lenovo Flex 2 Pro View product	B Lenovo X240 Win8.1 US View product
Design2 differ
Product typeDiffers	Hybrid (2-in-1)	Laptop
Product colour	Black	Black
Form factorDiffers	Convertible (Fold-back screen)	Clamshell
Market positioning	Business	Business
Housing materialKnown for one	Aluminium	Unknown — not stated by the source
Display2 differ
Display diagonalDiffers	39.6 cm (15.6")	31.8 cm (12.5")
Display resolution	1920 x 1080 pixels	1920 x 1080 pixels
TouchscreenDiffers	Yes	No
HD type	Full HD	Full HD
Panel type	IPS	IPS
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display surfaceKnown for one	Unknown — not stated by the source	Matt
Touchscreen typeKnown for one	Capacitive	Unknown — not stated by the source
Touch technologyKnown for one	Multi-touch	Unknown — not stated by the source
Processor7 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i7	Intel® Core™ i5
Processor generationDiffers	4th gen Intel® Core™ i7	4th gen Intel® Core™ i5
Processor modelDiffers	i7-4510U	i5-4300U
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyDiffers	3.1 GHz	2.9 GHz
Processor frequencyDiffers	2 GHz	1.9 GHz
System bus rate	5 GT/s	5 GT/s
Processor cacheDiffers	4 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socket	BGA 1168	BGA 1168
Processor lithography	22 nm	22 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i7-4500 Mobile series	Intel Core i5-4300 Mobile series
Processor codename	Haswell	Haswell
Bus type	DMI2	DMI2
FSB Parity	No	No
Stepping	D0	D0
Thermal Design Power (TDP)	15 W	15 W
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanes	12	12
PCI Express configurations	4x1, 2x4	4x1, 2x4
PCI Express slots version	2.0	2.0
ECC supported by processor	No	No
Memory2 differ
Internal memory	8 GB	8 GB
Internal memory type	DDR3L-SDRAM	DDR3L-SDRAM
Memory clock speed	1600 MHz	1600 MHz
Memory layout (slots x size)Known for one	Unknown — not stated by the source	1 x 8 GB
Memory slotsDiffers	2x SO-DIMM	1x SO-DIMM
Maximum internal memoryDiffers	16 GB	8 GB
Memory form factorKnown for one	SO-DIMM	Unknown — not stated by the source
Maximum internal memory (64-bit)Known for one	16 GB	Unknown — not stated by the source
Storage2 differ
Total storage capacityDiffers	1 TB	256 GB
Storage mediaDiffers	Hybrid-HDD	SSD
Number of SSDs installedKnown for one	Unknown — not stated by the source	1
SSD capacityKnown for one	Unknown — not stated by the source	256 GB
SSD interfaceKnown for one	Unknown — not stated by the source	SATA III
Optical drive typeKnown for one	Unknown — not stated by the source	No
Card reader integrated	Yes	Yes
Compatible memory cards	MMC, SD, SDHC, SDXC	MMC, SD, SDHC, SDXC
HDD capacityKnown for one	1 TB	Unknown — not stated by the source
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
Hybrid-HDD cache typeKnown for one	SSD	Unknown — not stated by the source
Hybrid-HDD capacityKnown for one	1 TB	Unknown — not stated by the source
Hybrid-HDD cache memoryKnown for one	8 GB	Unknown — not stated by the source
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Graphics3 differ
On-board graphics card	Yes	Yes
Discrete graphics cardDiffers	Yes	No
Discrete graphics card modelDiffers	NVIDIA® GeForce® GT 840M	Not available
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 4400	Intel® HD Graphics 4400
Maximum on-board graphics card memory	1.74 GB	1.74 GB
On-board graphics card base frequency	200 MHz	200 MHz
On-board graphics card dynamic frequency (max)	1100 MHz	1100 MHz
On-board graphics card DirectX versionDiffers	11.2/12	12
On-board graphics card ID	0xA16	0xA16
Discrete graphics card memoryKnown for one	2 GB	Unknown — not stated by the source
On-board graphics card OpenGL versionKnown for one	4.3	Unknown — not stated by the source
Number of discrete graphics cards installedKnown for one	1	Unknown — not stated by the source
Number of discrete graphics cards supportedKnown for one	1	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	Dolby Home Theater	HD
Built-in microphone	Yes	Yes
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Cameraidentical
Front camera	Yes	Yes
Front camera resolution	1280 x 720 pixels	1280 x 720 pixels
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	No
Network1 differ
Wi-Fi	Yes	Yes
Wi-Fi standardsDiffers	802.11b, 802.11g, Wi-Fi 4 (802.11n)	Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
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
Near Field Communication (NFC)Known for one	Unknown — not stated by the source	Yes
Ports & interfaces5 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) ports	1	1
HDMI ports quantityDiffers	1	0
DisplayPorts quantity	0	0
Mini DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
DVI port	No	No
VGA (D-Sub) ports quantityDiffers	0	1
Thunderbolt ports quantity	0	0
Headphone outputs	0	0
S/PDIF out port	No	No
Combo headphone/mic port	Yes	Yes
Microphone in	No	No
Docking connectorDiffers	No	Yes
ExpressCard slot	No	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
Total number of SATA connectorsKnown for one	Unknown — not stated by the source	4
Number of SATA III connectors	4	4
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® QM87
Keyboard2 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Keyboard backlit	Yes	Yes
Numeric keypadDiffers	Yes	No
Windows keys	Yes	Yes
Keyboard layoutKnown for one	Unknown — not stated by the source	QWERTY
Keyboard languageKnown for one	Unknown — not stated by the source	English
Software1 differ
Operating system installedDiffers	Windows 8.1	Windows 8.1 Pro
Operating system architecture	64-bit	64-bit
Processor special features8 differ
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
CPU configuration (max)	1	1
Embedded options availableDiffers	No	Yes
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	Yes	Yes
Intel FDI TechnologyDiffers	Yes	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Identity Protection Technology version	1.00	1.00
Intel ME Firmware Version	9.5	9.5
Intel Rapid Storage Technology	Yes	Yes
Intel Secure Key Technology version	1.00	1.00
Intel Small Business Advantage (SBA) versionKnown for one	Unknown — not stated by the source	1.00
Intel Smart Connect Technology	Yes	Yes
Intel Smart Connect Technology version	1.00	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-NI	No	No
Intel TSX-NI version	0.00	0.00
Intel Trusted Execution TechnologyDiffers	No	Yes
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)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Active Management Technology (Intel® AMT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	Yes	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® High Definition Audio (Intel® HD Audio)	Yes	Yes
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® Matrix Storage Technology (Intel® MST)	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Rapid Start Technology	No	No
Intel® Secure Key	Yes	Yes
Intel® Small Business Advantage (Intel® SBA)Differs	No	Yes
Intel® Smart Cache	Yes	Yes
Intel® Smart Response TechnologyDiffers	No	Yes
Intel® Turbo Boost Technology	2.0	2.0
Processor ARK IDDiffers	81015	76308
Processor codeDiffers	SR1EB	SR1ED
Processor package size	40 x 24 x 1.5 mm	40 x 24 x 1.5 mm
Supported instruction sets	AVX 2.0, SSE4.1, SSE4.2	AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring Technologies	Yes	Yes
UARTKnown for one	Unknown — not stated by the source	Yes
Conflict-Free processor	Yes	Yes
Intel® Virtualization Technology (Intel® VT)Known for one	VT-x	Unknown — not stated by the source
Battery2 differ
Battery technology	Lithium Polymer (LiPo)	Lithium Polymer (LiPo)
Number of battery cellsDiffers	4	3+3
Battery capacityDiffers	44 Wh	47 Wh
Battery life (max)Known for one	8 h	Unknown — not stated by the source
Poweridentical
AC adapter powerKnown for one	Unknown — not stated by the source	45 W
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
DC-in jack	Yes	Yes
Security2 differ
Cable lock slotDiffers	No	Yes
Fingerprint readerDiffers	No	Yes
Trusted Platform Module (TPM)Known for one	Unknown — not stated by the source	Yes
Weight & dimensions4 differ
WeightDiffers	2.3 kg	1.4 kg
WidthDiffers	282 mm	307 mm
DepthDiffers	276 mm	209 mm
HeightDiffers	19.9 mm	21 mm
Packaging contentidentical
AC adapter included	Yes	Yes
Manual	Yes	Yes
Power cord included	Yes	Yes
Cables includedKnown for one	AC	Unknown — not stated by the source
Other featuresidentical
3DKnown for one	No	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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