Product comparison · 2 laptops

Lenovo Flex 3 11 vs Lenovo Z51 Intel® Core™ i7 i7-5500U Laptop

116specifications compared
59differ
57identical
65known for one product only

Key differences

Product type
- Flex 3 11:Hybrid (2-in-1)
- Z51 Intel® Core™ i7 i7-5500U Laptop:Laptop
Form factor
- Flex 3 11:Convertible (Folder)
- Z51 Intel® Core™ i7 i7-5500U Laptop:Clamshell
Display diagonal
- Flex 3 11:29.5 cm (11.6")
- Z51 Intel® Core™ i7 i7-5500U Laptop:39.6 cm (15.6")
Display resolution
- Flex 3 11:1366 x 768 pixels
- Z51 Intel® Core™ i7 i7-5500U Laptop:1920 x 1080 pixels
Touchscreen
- Flex 3 11:Yes
- Z51 Intel® Core™ i7 i7-5500U Laptop:No
HD type
- Flex 3 11:HD
- Z51 Intel® Core™ i7 i7-5500U Laptop:Full HD
Processor family
- Flex 3 11:Intel® Celeron®
- Z51 Intel® Core™ i7 i7-5500U Laptop:Intel® Core™ i7
Processor model
- Flex 3 11:N2840
- Z51 Intel® Core™ i7 i7-5500U Laptop:i7-5500U

Side by side

Differences highlightedShow differences only

Comparison of Flex 3 11, Z51
181 specifications	A Lenovo Flex 3 11 View product	B Lenovo Z51 Intel® Core™ i7 i7-5500U Laptop Model Z51 View product
Design2 differ
Product typeDiffers	Hybrid (2-in-1)	Laptop
Product colour	Black	Black
Form factorDiffers	Convertible (Folder)	Clamshell
Display4 differ
Display diagonalDiffers	29.5 cm (11.6")	39.6 cm (15.6")
Display resolutionDiffers	1366 x 768 pixels	1920 x 1080 pixels
TouchscreenDiffers	Yes	No
HD typeDiffers	HD	Full HD
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display brightnessKnown for one	Unknown — not stated by the source	200 cd/m²
Touch technologyKnown for one	Multi-touch	Unknown — not stated by the source
Display surfaceKnown for one	Gloss	Unknown — not stated by the source
Dual-screenKnown for one	No	Unknown — not stated by the source
Processor16 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron®	Intel® Core™ i7
Processor generationKnown for one	Unknown — not stated by the source	5th gen Intel® Core™ i7
Processor modelDiffers	N2840	i7-5500U
Processor cores	2	2
Processor threadsDiffers	2	4
Processor boost frequencyDiffers	2.58 GHz	3 GHz
Processor frequencyDiffers	2.16 GHz	2.4 GHz
System bus rateKnown for one	Unknown — not stated by the source	5 GT/s
Processor cacheDiffers	1 MB	4 MB
Processor cache typeDiffers	L2	L3
Processor socketDiffers	BGA 1170	BGA 1168
Processor lithographyDiffers	22 nm	14 nm
Processor operating modes	32-bit, 64-bit	32-bit, 64-bit
Processor seriesDiffers	Intel Celeron Processor N2000 Series for Mobile	Intel Core i7-5500 Mobile Series
Processor codenameDiffers	Bay Trail	Broadwell
Bus typeKnown for one	Unknown — not stated by the source	DMI2
FSB Parity	No	No
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
PCI Express slots version	2.0	2.0
ECC supported by processor	No	No
Scenario Design Power (SDP)Known for one	4.5 W	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	4 GB	8 GB
Internal memory type	DDR3L-SDRAM	DDR3L-SDRAM
Memory clock speedKnown for one	Unknown — not stated by the source	1600 MHz
Memory form factorKnown for one	Unknown — not stated by the source	SO-DIMM
Memory layout (slots x size)Known for one	Unknown — not stated by the source	1 x 8 GB
Memory slotsKnown for one	Unknown — not stated by the source	2x SO-DIMM
Maximum internal memoryKnown for one	Unknown — not stated by the source	16 GB
Maximum internal memory (64-bit)Known for one	Unknown — not stated by the source	16 GB
Storage2 differ
Total storage capacityDiffers	500 GB	1 TB
Storage mediaDiffers	HDD	Hybrid-HDD
Optical drive typeKnown for one	Unknown — not stated by the source	DVD±RW
Card reader integrated	Yes	Yes
Compatible memory cards	MMC, SD, SDHC, SDXC	MMC, SD, SDHC, SDXC
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 speedKnown for one	5400 RPM	Unknown — not stated by the source
Graphics5 differ
On-board graphics card	Yes	Yes
Discrete graphics cardDiffers	No	Yes
Discrete graphics card modelDiffers	Not available	AMD Radeon R9 M375
Discrete graphics card memoryKnown for one	Unknown — not stated by the source	2 GB
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
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	950 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
Number of discrete graphics cards installedKnown for one	Unknown — not stated by the source	1
On-board graphics card burst frequencyKnown for one	792 MHz	Unknown — not stated by the source
Audioidentical
Audio system	Dolby Home Theater	Dolby Home Theater
Number of built-in speakersKnown for one	Unknown — not stated by the source	2
Speakers manufacturerKnown for one	Unknown — not stated by the source	JBL
Speaker powerKnown for one	Unknown — not stated by the source	2.5 W
Built-in microphone	Yes	Yes
Camera1 differ
Front camera	Yes	Yes
Front camera resolution (numeric)Differs	0.3 MP	1 MP
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	No
Networkidentical
Wi-Fi	Yes	Yes
Top Wi-Fi standardKnown for one	Unknown — not stated by the source	Wi-Fi 5 (802.11ac)
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 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 LAN	Yes	Yes
Ethernet LAN data ratesKnown for one	Unknown — not stated by the source	10,100,1000 Mbit/s
Bluetooth	Yes	Yes
Bluetooth version	4.0	4.0
Ports & interfaces2 differ
USB 2.0 ports quantityKnown for one	Unknown — not stated by the source	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	1	2
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	1	1
DisplayPorts quantity	0	0
DVI port	No	No
VGA (D-Sub) ports quantityDiffers	0	1
Thunderbolt ports quantity	0	0
S/PDIF out port	No	No
Combo headphone/mic port	Yes	Yes
Docking connectorKnown for one	Unknown — not stated by the source	No
ExpressCard slot	No	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
Headphone outputsKnown for one	1	Unknown — not stated by the source
Microphone inKnown for one	Yes	Unknown — not stated by the source
Total number of SATA connectorsKnown for one	2	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel SoC
Keyboard1 differ
Keyboard backlitKnown for one	Unknown — not stated by the source	No
Numeric keypadDiffers	No	Yes
Island-style keyboardKnown for one	Unknown — not stated by the source	Yes
Windows keys	Yes	Yes
Pointing deviceKnown for one	Clickpad	Unknown — not stated by the source
Softwareidentical
Operating system installed	Windows 8.1	Windows 8.1
Operating system architecture	64-bit	64-bit
Processor special features19 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
Graphics & IMC lithographyDiffers	22 nm	14 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyDiffers	No	Yes
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	Yes	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 Rapid Storage Technology	No	No
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 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	No
Intel Stable Image Platform Program (SIPP) versionKnown for one	Unknown — not stated by the source	0.00
Intel TSX-NIKnown for one	Unknown — not stated by the source	No
Intel TSX-NI versionKnown for one	Unknown — not stated by the source	0.00
Intel Trusted Execution Technology	No	No
Intel VT-x with Extended Page Tables (EPT)Differs	No	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)Differs	No	Yes
Intel® Anti-Theft Technology (Intel® AT)	No	No
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)Known for one	Unknown — not stated by the source	Yes
Intel® InTru™ 3D TechnologyDiffers	No	Yes
Intel® Insider™Differs	No	Yes
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® OS GuardKnown for one	Unknown — not stated by the source	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Small Business Advantage (Intel® SBA)Known for one	Unknown — not stated by the source	Yes
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Intel® Smart Response TechnologyKnown for one	Unknown — not stated by the source	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Intel® Virtualization Technology (Intel® VT)Differs	VT-x	VT-d, VT-x
Processor ARK IDDiffers	82103	85214
Processor codeDiffers	SR1YJ	SR23W
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
Conflict-Free processor	Yes	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
Battery2 differ
Number of battery cellsDiffers	2	4
Battery capacityDiffers	30 Wh	41 Wh
Battery life (max)Known for one	5 h	Unknown — not stated by the source
Poweridentical
AC adapter powerKnown for one	Unknown — not stated by the source	65 W
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	No	No
Fingerprint readerKnown for one	Unknown — not stated by the source	No
Certificatesidentical
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Sustainabilityidentical
Sustainability certificatesKnown for one	Unknown — not stated by the source	EPEAT Silver, ENERGY STAR
Weight & dimensions4 differ
WeightDiffers	1.4 kg	2.3 kg
WidthDiffers	299 mm	384 mm
DepthDiffers	209 mm	265 mm
HeightDiffers	21.8 mm	24.6 mm
Packaging contentidentical
AC adapter includedKnown for one	Yes	Unknown — not stated by the source
ManualKnown for one	Yes	Unknown — not stated by the source
Power cord includedKnown for one	Yes	Unknown — not stated by the source
Quick start guideKnown for one	Yes	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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