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Product comparison · 2 laptops

Acer Predator 21 X GX21-71-746S Intel® Core™ i7 i7-7820HK Laptop vs Lenovo E550 + Office 2016 Home & Business

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  • 141specifications compared
  • 66differ
  • 75identical
  • 55known for one product only

Key differences

  • Market positioning
    • Gaming
    • Business
  • Display diagonal
    • 53.3 cm (21")
    • 39.6 cm (15.6")
  • Display resolution
    • 2560 x 1080 pixels
    • 1366 x 768 pixels
  • HD type
    • WFHD
    • HD
  • Native aspect ratio
    • 21:9
    • 16:9
  • Processor family
    • Intel® Core™ i7
    • Intel® Core™ i3
  • Processor generation
    • 7th gen Intel® Core™ i7
    • 5th gen Intel® Core™ i3
  • Processor model
    • i7-7820HK
    • i3-5005U

Side by side

Differences highlightedShow differences only
196 specifications
A

Acer

Predator 21 X GX21-71-746S Intel® Core™ i7 i7-7820HK Laptop

Model GX21-71-746S

View product
B

Lenovo

E550 + Office 2016 Home & BusinessView product
Design1 differ
Product typeLaptopLaptop
Product colourBlackBlack
Form factorClamshellClamshell
Housing materialKnown for oneAcrylonitrile butadiene styrene (ABS)
Market positioningDiffersGamingBusiness
Display4 differ
Display diagonalDiffers53.3 cm (21")39.6 cm (15.6")
Display resolutionDiffers2560 x 1080 pixels1366 x 768 pixels
TouchscreenNoNo
HD typeDiffersWFHDHD
LED backlightYesYes
Native aspect ratioDiffers21:916:9
Display surfaceKnown for oneMatt
Screen shapeKnown for oneFlat
Panel typeKnown for oneIPS
Processor18 differ
Processor manufacturerIntelIntel
Processor familyDiffersIntel® Core™ i7Intel® Core™ i3
Processor generationDiffers7th gen Intel® Core™ i75th gen Intel® Core™ i3
Processor modelDiffersi7-7820HKi3-5005U
Processor coresDiffers42
Processor threadsDiffers84
Processor frequencyDiffers2.9 GHz2 GHz
System bus rateDiffers8 GT/s5 GT/s
Processor cacheDiffers8 MB3 MB
Processor cache typeSmart CacheSmart Cache
Processor socketKnown for oneBGA 1168
Processor lithography14 nm14 nm
Processor operating modesDiffers64-bit32-bit, 64-bit
Processor seriesDiffersIntel Core i7-7800 Mobile SeriesIntel Core i3-5000 Mobile series
Processor codenameDiffersKaby LakeBroadwell
Bus typeDiffersDMI3DMI2
SteppingKnown for oneF0
Thermal Design Power (TDP)Differs45 W15 W
Configurable TDP-downDiffers35 W10 W
Configurable TDP-down frequencyKnown for one0.6 GHz
TjunctionDiffers100 °C105 °C
Maximum number of PCI Express lanesDiffers1612
PCI Express configurationsDiffers1x16, 1x8, 2x4, 2x82x4, 4x1
PCI Express slots versionDiffers3.02.0
Processor boost frequencyKnown for one3.9 GHz
ECC supported by processorKnown for oneNo
Memory5 differ
Internal memoryDiffers64 GB4 GB
Internal memory typeDiffersDDR4-SDRAMDDR3L-SDRAM
Memory clock speedKnown for one1600 MHz
Memory form factorSO-DIMMSO-DIMM
Memory layout (slots x size)Differs4 x 16 GB1 x 4 GB
Memory slotsDiffers4x SO-DIMM2x SO-DIMM
Maximum internal memoryDiffers64 GB16 GB
Maximum internal memory (64-bit)Known for one16 GB
Storage6 differ
Total storage capacityDiffers2 TB500 GB
Storage mediaDiffersHDD+SSDHDD
Number of HDDs installed11
HDD capacityDiffers1 TB500 GB
HDD interfaceDiffersSATASATA III
HDD speed7200 RPM7200 RPM
HDD size2.5"2.5"
Optical drive typeDiffersNoDVD±RW
Card reader integratedYesYes
Compatible memory cardsDiffersSDMMC, SD, SDHC, SDXC
Number of SSDs installedKnown for one2
SSD capacityKnown for one512 GB
Graphics8 differ
On-board graphics cardYesYes
Discrete graphics cardDiffersYesNo
Discrete graphics card modelDiffersNVIDIA® GeForce® GTX 1080 SLINot available
On-board graphics card modelDiffersIntel® HD Graphics 630Intel® HD Graphics 5500
Maximum on-board graphics card memoryDiffers64 GB16 GB
On-board graphics card base frequencyDiffers350 MHz300 MHz
On-board graphics card dynamic frequency (max)Differs1100 MHz850 MHz
On-board graphics card DirectX versionDiffers12.011.2
On-board graphics card IDDiffers0x591B0x1616
Discrete graphics card memoryKnown for one16 GB
Discrete graphics memory typeKnown for oneGDDR5X
On-board graphics card familyKnown for oneIntel® HD Graphics
On-board graphics card OpenGL versionKnown for one4.4
Graphics card Open GL supportKnown for oneYes
Audio1 differ
Audio systemKnown for oneDolby Advanced Audio
Number of built-in speakersDiffers42
Speaker powerKnown for one2 W
Built-in microphoneYesYes
Cameraidentical
Front cameraYesYes
Front camera signal format720p720p
Front camera resolutionKnown for one1280 x 720 pixels
Optical driveidentical
LightScribeKnown for oneNo
Network1 differ
Wi-FiYesYes
Wi-Fi standardsDiffersWi-Fi 5 (802.11ac)802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
BluetoothYesYes
Bluetooth versionKnown for one4.0
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers01
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers42
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityDiffers10
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity00
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity00
Ethernet LAN (RJ-45) ports11
HDMI ports quantity11
DisplayPorts quantityDiffers10
DVI portNoNo
VGA (D-Sub) ports quantityDiffers01
Thunderbolt ports quantity00
Thunderbolt 3 ports quantity00
Headphone outputsKnown for one0
S/PDIF out portKnown for oneNo
Combo headphone/mic portYesYes
Microphone inKnown for oneNo
Docking connectorDiffersNoYes
ExpressCard slotKnown for oneNo
CardBus PCMCIA slots quantityKnown for one0
CardBus PCMCIA slot typeKnown for oneNo
SmartCard slotKnown for oneNo
USB Sleep-and-ChargeKnown for oneYes
USB Sleep-and-Charge portsKnown for one1
Performance1 differ
Motherboard chipsetDiffersIntel® CM238Intel SoC
Keyboard2 differ
Pointing deviceDiffersTouchpadThinkPad UltraNav
Keyboard backlitDiffersYesNo
Numeric keypadYesYes
Spill-resistant keyboardKnown for oneYes
Full-size keyboardYesYes
Windows keysYesYes
Keyboard layoutKnown for oneQWERTY
Keyboard languageKnown for oneUK English
Software1 differ
Operating system installedDiffersWindows 10 HomeWindows 10 Pro
Operating system architecture64-bit64-bit
Processor special features5 differ
Intel® Wireless Display (Intel® WiDi)YesYes
CPU configuration (max)11
Embedded options availableNoNo
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
Graphics & IMC lithography14 nm14 nm
Idle StatesYesYes
Intel 64YesYes
Intel Clear Video TechnologyYesYes
Intel Enhanced Halt StateYesYes
Intel FDI TechnologyKnown for oneYes
Intel Fast Memory AccessKnown for oneYes
Intel Flex Memory AccessYesYes
Intel Identity Protection Technology version1.001.00
Intel Secure Key Technology version1.001.00
Intel Small Business Advantage (SBA) version1.001.00
Intel Smart Response Technology version1.001.00
Intel Stable Image Platform Program (SIPP)NoNo
Intel Stable Image Platform Program (SIPP) version0.000.00
Intel TSX-NIDiffersYesNo
Intel TSX-NI versionDiffers1.000.00
Intel Trusted Execution TechnologyNoNo
Intel VT-x with Extended Page Tables (EPT)YesYes
Intel Virtualization Technology (VT-x)YesYes
Intel Virtualization Technology for Directed I/O (VT-d)YesYes
Intel® AES New Instructions (Intel® AES-NI)YesYes
Intel® Clear Video HD Technology (Intel® CVT HD)YesYes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)YesYes
Intel® Hyper Threading Technology (Intel® HT Technology)YesYes
Intel® Identity Protection Technology (Intel® IPT)YesYes
Intel® InTru™ 3D TechnologyYesYes
Intel® Insider™Known for oneYes
Intel® OS GuardYesYes
Intel® Quick Sync Video TechnologyYesYes
Intel® Secure KeyYesYes
Intel® Small Business Advantage (Intel® SBA)Known for oneYes
Intel® Smart CacheYesYes
Intel® Smart Response TechnologyYesYes
Intel® Turbo Boost TechnologyDiffers2.0No
Processor ARK IDDiffers9746484695
Processor codeKnown for oneSR27G
Processor package sizeDiffers42 x 28 mm40 x 24x 1.3 mm
Supported instruction setsAVX 2.0, SSE4.1, SSE4.2AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring TechnologiesYesYes
Conflict-Free processorYesYes
Intel HD GraphicsKnown for oneYes
Intel Software Guard Extensions (Intel SGX)Known for oneYes
Intel® My WiFi Technology (Intel® MWT)Known for oneYes
Battery2 differ
Battery technologyLithium-Ion (Li-Ion)Lithium-Ion (Li-Ion)
Number of battery cellsDiffers86
Battery capacityDiffers88 Wh48 Wh
Battery life (max)Known for one9 h
Poweridentical
AC adapter frequency50 - 60 Hz50 - 60 Hz
AC adapter input voltageKnown for one100 - 240 V
DC-in jackYesYes
AC adapter powerKnown for one330 W
Security1 differ
Cable lock slotYesYes
Fingerprint readerKnown for oneYes
Trusted Platform Module (TPM)Known for oneYes
Password protectionKnown for oneYes
Password protection typeDiffersBIOS, HDD, Supervisor, UserHDD, Power on, Supervisor
Cable lock slot typeKnown for oneKensington
Certificatesidentical
Compliance certificatesKnown for oneRoHS
Sustainabilityidentical
Sustainability certificatesKnown for oneEPEAT Gold, ENERGY STAR
Weight & dimensions4 differ
WeightDiffers8.5 kg2.35 kg
WidthDiffers568 mm377 mm
DepthDiffers314.5 mm256 mm
HeightDiffers83.3 mm27 mm
Height (front)Known for one6.88 cm
Height (rear)Known for one8.32 cm
Packaging contentidentical
AC adapter includedYesYes
ManualYesYes
Power cord includedYesYes
Cables includedKnown for oneAC

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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