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Product comparison · 2 laptops

Acer Aspire 5 A515-51G-751G Intel® Core™ i7 i7-7500U Laptop vs Acer Predator 21 X GX21-71-79UY Intel® Core™ i7 i7-7820HK Laptop

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  • 136specifications compared
  • 46differ
  • 90identical
  • 25known for one product only

Key differences

  • Display diagonal
    • 39.6 cm (15.6")
    • 53.3 cm (21")
  • Display resolution
    • 1366 x 768 pixels
    • 1920 x 1080 pixels
  • HD type
    • HD
    • Full HD
  • Processor model
    • i7-7500U
    • i7-7820HK
  • Processor cores
    • 2
    • 4
  • Processor threads
    • 4
    • 8
  • Processor boost frequency
    • 3.5 GHz
    • 3.9 GHz
  • Processor frequency
    • 2.7 GHz
    • 2.9 GHz

Side by side

Differences highlightedShow differences only
161 specifications
A

Acer

Aspire 5 A515-51G-751G Intel® Core™ i7 i7-7500U Laptop

Model A515-51G-751G

View product
B

Acer

Predator 21 X GX21-71-79UY Intel® Core™ i7 i7-7820HK Laptop

Model GX21-71-79UY

View product
Designidentical
Product typeLaptopLaptop
Product colourBlackBlack
Form factorClamshellClamshell
Market positioningKnown for oneGaming
Display3 differ
Display diagonalDiffers39.6 cm (15.6")53.3 cm (21")
Display resolutionDiffers1366 x 768 pixels1920 x 1080 pixels
TouchscreenNoNo
HD typeDiffersHDFull HD
Panel typeKnown for oneIPS
LED backlightYesYes
Native aspect ratio16:916:9
Processor12 differ
Processor manufacturerIntelIntel
Processor familyIntel® Core™ i7Intel® Core™ i7
Processor generation7th gen Intel® Core™ i77th gen Intel® Core™ i7
Processor modelDiffersi7-7500Ui7-7820HK
Processor coresDiffers24
Processor threadsDiffers48
Processor boost frequencyDiffers3.5 GHz3.9 GHz
Processor frequencyDiffers2.7 GHz2.9 GHz
System bus rateDiffers4 GT/s8 GT/s
Processor cacheDiffers4 MB8 MB
Processor cache typeSmart CacheSmart Cache
Processor lithography14 nm14 nm
Processor operating modes64-bit64-bit
Processor seriesKnown for oneIntel Core i7-7800 Mobile Series
Processor codenameKaby LakeKaby Lake
Bus typeDiffersOPIDMI3
Thermal Design Power (TDP)Differs15 W45 W
Configurable TDP-downDiffers7.5 W35 W
Tjunction100 °C100 °C
Maximum number of PCI Express lanesDiffers1216
PCI Express configurationsDiffers1x2+2x1, 1x4, 2x2, 4x11x16, 1x8, 2x4, 2x8
PCI Express slots version3.03.0
ECC supported by processorNoNo
Processor socketKnown for oneBGA 1356
SteppingKnown for oneH0
Configurable TDP-up frequencyKnown for one2.9 GHz
Configurable TDP-upKnown for one25 W
Configurable TDP-down frequencyKnown for one0.8 GHz
Memory1 differ
Internal memoryDiffers8 GB64 GB
Internal memory typeDDR4-SDRAMDDR4-SDRAM
Memory slotsKnown for one4x SO-DIMM
Maximum internal memoryKnown for one64 GB
Storage4 differ
Total storage capacityDiffers1 TB2 TB
Storage mediaDiffersHDDHDD+SSD
Number of HDDs installed11
HDD capacity1 TB1 TB
HDD interfaceSATASATA
HDD speedDiffers5400 RPM7200 RPM
Number of SSDs installedKnown for one2
SSD capacityKnown for one512 GB
Optical drive typeNoNo
Card reader integratedDiffersNoYes
Compatible memory cardsKnown for oneSD
Graphics8 differ
On-board graphics cardYesYes
Discrete graphics cardYesYes
Discrete graphics card modelDiffersNVIDIA® GeForce® 940MXNVIDIA® GeForce® GTX 1080 SLI
Discrete graphics card memoryDiffers2 GB16 GB
Discrete graphics memory typeDiffersGDDR5GDDR5X
On-board graphics card modelDiffersIntel® HD Graphics 620Intel® HD Graphics 630
Maximum on-board graphics card memoryDiffers32 GB64 GB
On-board graphics card base frequencyDiffers300 MHz350 MHz
On-board graphics card dynamic frequency (max)Differs1050 MHz1100 MHz
On-board graphics card DirectX version12.012.0
On-board graphics card OpenGL version4.44.4
On-board graphics card IDDiffers0x59160x591B
Audio1 differ
Number of built-in speakersDiffers24
Built-in microphoneYesYes
Cameraidentical
Front cameraYesYes
Front camera resolution1280 x 720 pixels1280 x 720 pixels
Networkidentical
Wi-FiYesYes
Wi-Fi standardsWi-Fi 5 (802.11ac)Wi-Fi 5 (802.11ac)
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
BluetoothYesYes
Top Wi-Fi standardKnown for oneWi-Fi 5 (802.11ac)
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers20
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers14
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity11
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 quantityDiffers01
DVI portNoNo
VGA (D-Sub) ports quantity00
Thunderbolt ports quantity00
Thunderbolt 3 ports quantity00
Combo headphone/mic portYesYes
Docking connectorNoNo
Keyboardidentical
Pointing deviceTouchpadTouchpad
Keyboard backlitKnown for oneYes
Numeric keypadYesYes
Windows keysYesYes
Softwareidentical
Operating system installedWindows 10 HomeWindows 10 Home
Operating system architecture64-bit64-bit
Processor special features4 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 Flex Memory AccessYesYes
Intel HD GraphicsKnown for oneYes
Intel Identity Protection Technology version1.001.00
Intel Secure Key Technology version1.001.00
Intel Small Business Advantage (SBA) versionKnown for one1.00
Intel Smart Response Technology version1.001.00
Intel Software Guard Extensions (Intel SGX)YesYes
Intel Stable Image Platform Program (SIPP)NoNo
Intel Stable Image Platform Program (SIPP) version0.000.00
Intel TSX-NIDiffersNoYes
Intel TSX-NI versionDiffers0.001.00
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® My WiFi Technology (Intel® MWT)YesYes
Intel® OS GuardYesYes
Intel® Quick Sync Video TechnologyYesYes
Intel® Secure KeyYesYes
Intel® Smart CacheKnown for oneYes
Intel® Smart Response TechnologyYesYes
Intel® Turbo Boost Technology2.02.0
Processor ARK IDDiffers9545197464
Processor package sizeDiffers42 x 24 mm42 x 28 mm
Supported instruction setsAVX 2.0, SSE4.1, SSE4.2AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring TechnologiesYesYes
Conflict-Free processorYesYes
Intel® Insider™Known for oneYes
Intel® Small Business Advantage (Intel® SBA)Known for oneYes
Processor codeKnown for oneSR2ZV
Battery3 differ
Battery technologyDiffersLithium Polymer (LiPo)Lithium-Ion (Li-Ion)
Number of battery cellsDiffers48
Battery capacityDiffers48 Wh88 Wh
Battery life (max)Known for one7 h
Power1 differ
AC adapter powerDiffers65 W330 W
AC adapter frequency50 - 60 Hz50 - 60 Hz
DC-in jackYesYes
AC adapter input voltageKnown for one100 - 240 V
Securityidentical
Cable lock slotKnown for oneYes
Fingerprint readerKnown for oneNo
Weight & dimensions6 differ
WeightDiffers2.2 kg8.5 kg
WidthDiffers381.6 mm568 mm
DepthDiffers263 mm314.5 mm
HeightDiffers21.6 mm83.3 mm
Height (front)Differs2.16 cm6.88 cm
Height (rear)Differs2.16 cm8.32 cm
Packaging contentidentical
AC adapter includedYesYes
ManualYesYes
Power cord includedYesYes

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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