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Product comparison · 2 laptops

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

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

Key differences

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

Side by side

Differences highlightedShow differences only
181 specifications
A

Lenovo

Flex 3 11View product
B

Lenovo

Z51 Intel® Core™ i7 i7-5500U Laptop

Model Z51

View product
Design2 differ
Product typeDiffersHybrid (2-in-1)Laptop
Form factorDiffersConvertible (Folder)Clamshell
Display4 differ
Display diagonalDiffers29.5 cm (11.6")39.6 cm (15.6")
Display resolutionDiffers1366 x 768 pixels1920 x 1080 pixels
TouchscreenDiffersYesNo
HD typeDiffersHDFull HD
Display brightnessKnown for one200 cd/m²
Touch technologyKnown for oneMulti-touch
Display surfaceKnown for oneGloss
Dual-screenKnown for oneNo
Processor16 differ
Processor familyDiffersIntel® Celeron®Intel® Core™ i7
Processor generationKnown for one5th gen Intel® Core™ i7
Processor modelDiffersN2840i7-5500U
Processor threadsDiffers24
Processor boost frequencyDiffers2.58 GHz3 GHz
Processor frequencyDiffers2.16 GHz2.4 GHz
System bus rateKnown for one5 GT/s
Processor cacheDiffers1 MB4 MB
Processor cache typeDiffersL2L3
Processor socketDiffersBGA 1170BGA 1168
Processor lithographyDiffers22 nm14 nm
Processor seriesDiffersIntel Celeron Processor N2000 Series for MobileIntel Core i7-5500 Mobile Series
Processor codenameDiffersBay TrailBroadwell
Bus typeKnown for oneDMI2
SteppingDiffersC0F0
Thermal Design Power (TDP)Differs7.5 W15 W
Configurable TDP-downKnown for one7.5 W
Configurable TDP-down frequencyKnown for one0.6 GHz
TjunctionDiffers100 °C105 °C
Maximum number of PCI Express lanesDiffers412
PCI Express configurationsDiffers1x44x1, 2x4
Scenario Design Power (SDP)Known for one4.5 W
Memory1 differ
Internal memoryDiffers4 GB8 GB
Memory clock speedKnown for one1600 MHz
Memory form factorKnown for oneSO-DIMM
Memory layout (slots x size)Known for one1 x 8 GB
Memory slotsKnown for one2x SO-DIMM
Maximum internal memoryKnown for one16 GB
Maximum internal memory (64-bit)Known for one16 GB
Storage2 differ
Total storage capacityDiffers500 GB1 TB
Storage mediaDiffersHDDHybrid-HDD
Optical drive typeKnown for oneDVD±RW
Number of HDDs installedKnown for one1
HDD capacityKnown for one500 GB
HDD speedKnown for one5400 RPM
Graphics5 differ
Discrete graphics cardDiffersNoYes
Discrete graphics card modelDiffersNot availableAMD Radeon R9 M375
Discrete graphics card memoryKnown for one2 GB
On-board graphics card modelDiffersIntel® HD GraphicsIntel® HD Graphics 5500
Maximum on-board graphics card memoryKnown for one16 GB
On-board graphics card base frequencyDiffers311 MHz300 MHz
On-board graphics card dynamic frequency (max)Differs792 MHz950 MHz
On-board graphics card DirectX versionKnown for one11.2
On-board graphics card IDKnown for one0x1616
Number of discrete graphics cards installedKnown for one1
On-board graphics card burst frequencyKnown for one792 MHz
Audioidentical
Number of built-in speakersKnown for one2
Speakers manufacturerKnown for oneJBL
Speaker powerKnown for one2.5 W
Camera1 differ
Front camera resolution (numeric)Differs0.3 MP1 MP
Optical driveidentical
LightScribeKnown for oneNo
Networkidentical
Top Wi-Fi standardKnown for oneWi-Fi 5 (802.11ac)
Ethernet LAN data ratesKnown for one10,100,1000 Mbit/s
Ports & interfaces2 differ
USB 2.0 ports quantityKnown for one1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers12
VGA (D-Sub) ports quantityDiffers01
Docking connectorKnown for oneNo
Headphone outputsKnown for one1
Microphone inKnown for oneYes
Total number of SATA connectorsKnown for one2
Performanceidentical
Motherboard chipsetKnown for oneIntel SoC
Keyboard1 differ
Keyboard backlitKnown for oneNo
Numeric keypadDiffersNoYes
Island-style keyboardKnown for oneYes
Pointing deviceKnown for oneClickpad
Processor special features19 differ
Graphics & IMC lithographyDiffers22 nm14 nm
Intel Clear Video TechnologyDiffersNoYes
Intel FDI TechnologyDiffersNoYes
Intel Fast Memory AccessDiffersNoYes
Intel Flex Memory AccessDiffersNoYes
Intel Identity Protection Technology versionKnown for one1.00
Intel Small Business Advantage (SBA) versionKnown for one1.00
Intel Smart Response Technology versionKnown for one1.00
Intel Stable Image Platform Program (SIPP)Known for oneNo
Intel Stable Image Platform Program (SIPP) versionKnown for one0.00
Intel TSX-NIKnown for oneNo
Intel TSX-NI versionKnown for one0.00
Intel VT-x with Extended Page Tables (EPT)DiffersNoYes
Intel Virtualization Technology for Directed I/O (VT-d)DiffersNoYes
Intel® AES New Instructions (Intel® AES-NI)DiffersNoYes
Intel® Clear Video HD Technology (Intel® CVT HD)DiffersNoYes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)DiffersNoYes
Intel® Hyper Threading Technology (Intel® HT Technology)DiffersNoYes
Intel® Identity Protection Technology (Intel® IPT)Known for oneYes
Intel® InTru™ 3D TechnologyDiffersNoYes
Intel® Insider™DiffersNoYes
Intel® OS GuardKnown for oneYes
Intel® Small Business Advantage (Intel® SBA)Known for oneYes
Intel® Smart CacheKnown for oneYes
Intel® Smart Response TechnologyKnown for oneYes
Intel® Turbo Boost TechnologyDiffersNo2.0
Intel® Virtualization Technology (Intel® VT)DiffersVT-xVT-d, VT-x
Processor ARK IDDiffers8210385214
Processor codeDiffersSR1YJSR23W
Processor package sizeDiffers25 x 27 mm40 x 24 x 1.3 mm
Supported instruction setsKnown for oneAVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring TechnologiesDiffersNoYes
Intel Smart Connect TechnologyKnown for oneYes
Intel Smart Connect Technology versionKnown for one1.00
Battery2 differ
Number of battery cellsDiffers24
Battery capacityDiffers30 Wh41 Wh
Battery life (max)Known for one5 h
Poweridentical
AC adapter powerKnown for one65 W
Securityidentical
Fingerprint readerKnown for oneNo
Certificatesidentical
Compliance certificatesKnown for oneRoHS
Sustainabilityidentical
Sustainability certificatesKnown for oneEPEAT Silver, ENERGY STAR
Weight & dimensions4 differ
WeightDiffers1.4 kg2.3 kg
WidthDiffers299 mm384 mm
DepthDiffers209 mm265 mm
HeightDiffers21.8 mm24.6 mm
Packaging contentidentical
AC adapter includedKnown for oneYes
ManualKnown for oneYes
Power cord includedKnown for oneYes
Quick start guideKnown for oneYes

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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