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Product comparison · 2 laptops

Acer Predator 21 X GX21-71-74GK Intel® Core™ i7 i7-7820HK Laptop vs Dynabook Portégé Z30T-C-145 Intel® Core™ i7 i7-6500U Laptop

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  • 134specifications compared
  • 56differ
  • 78identical
  • 52known for one product only

Key differences

  • Product colour
    • Black
    • Black, Metallic
  • Display diagonal
    • 53.3 cm (21")
    • 33.8 cm (13.3")
  • Display resolution
    • 2560 x 1080 pixels
    • 1920 x 1080 pixels
  • HD type
    • WFHD
    • Full HD
  • Native aspect ratio
    • 21:9
    • 16:9
  • Processor generation
    • 7th gen Intel® Core™ i7
    • 6th gen Intel® Core™ i7
  • Processor model
    • i7-7820HK
    • i7-6500U
  • Processor cores
    • 4
    • 2

Side by side

Differences highlightedShow differences only
186 specifications
A

Acer

Predator 21 X GX21-71-74GK Intel® Core™ i7 i7-7820HK Laptop

Model GX21-71-74GK

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B

Dynabook

Portégé Z30T-C-145 Intel® Core™ i7 i7-6500U Laptop

Model Z30T-C-145

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Design1 differ
Product colourDiffersBlackBlack, Metallic
Market positioningKnown for oneGaming
Display4 differ
Display diagonalDiffers53.3 cm (21")33.8 cm (13.3")
Display resolutionDiffers2560 x 1080 pixels1920 x 1080 pixels
HD typeDiffersWFHDFull HD
Native aspect ratioDiffers21:916:9
Panel typeKnown for oneIPS
Processor15 differ
Processor generationDiffers7th gen Intel® Core™ i76th gen Intel® Core™ i7
Processor modelDiffersi7-7820HKi7-6500U
Processor coresDiffers42
Processor threadsDiffers84
Processor boost frequencyDiffers3.9 GHz3.1 GHz
Processor frequencyDiffers2.9 GHz2.5 GHz
System bus rateDiffers8 GT/s4 GT/s
Processor cacheDiffers8 MB4 MB
Processor socketKnown for oneLGA 1356 (Socket B2)
Processor seriesDiffersIntel Core i7-7800 Mobile SeriesIntel Core i7-6500 Mobile series
Processor codenameDiffersKaby LakeSkylake
Bus typeDiffersDMI3OPI
SteppingKnown for oneD1
Thermal Design Power (TDP)Differs45 W15 W
Configurable TDP-up frequencyKnown for one2.6 GHz
Configurable TDP-upKnown for one25 W
Configurable TDP-downDiffers35 W7.5 W
Configurable TDP-down frequencyKnown for one0.8 GHz
Maximum number of PCI Express lanesDiffers1612
PCI Express configurationsDiffers1x16, 1x8, 2x4, 2x81x4, 4x1
Memory5 differ
Internal memoryDiffers64 GB8 GB
Internal memory typeDiffersDDR4-SDRAMDDR3L-SDRAM
Memory clock speedKnown for one1600 MHz
Memory layout (slots x size)Differs4 x 16 GB1 x 8 GB
Memory slotsDiffers4x SO-DIMM2x SO-DIMM
Maximum internal memoryDiffers64 GB16 GB
Storage5 differ
Total storage capacityDiffers2 TB256 GB
Storage mediaDiffersHDD+SSDSSD
Number of SSDs installedDiffers21
SSD capacityDiffers512 GB256 GB
SSD form factorKnown for oneM.2
Compatible memory cardsDiffersSDMMC, SD, SDHC, SDXC
Number of HDDs installedKnown for one1
HDD capacityKnown for one1 TB
HDD interfaceKnown for oneSATA
HDD speedKnown for one7200 RPM
HDD sizeKnown for one2.5"
Graphics7 differ
Discrete graphics cardDiffersYesNo
Discrete graphics card modelDiffersNVIDIA® GeForce® GTX 1080Not available
On-board graphics card modelDiffersIntel® HD Graphics 630Intel® HD Graphics 520
Maximum on-board graphics card memoryDiffers64 GB1.74 GB
On-board graphics card base frequencyDiffers350 MHz300 MHz
On-board graphics card dynamic frequency (max)Differs1100 MHz1050 MHz
On-board graphics card IDDiffers0x591B1916
Discrete graphics card memoryKnown for one16 GB
Discrete graphics memory typeKnown for oneGDDR5X
Graphics card Open GL supportKnown for oneYes
Audioidentical
Number of built-in speakersKnown for one4
Camera1 differ
Front camera resolution (numeric)Known for one2 MP
Front camera resolutionDiffers1280 x 720 pixels1980 x 1080 pixels
Front camera signal formatKnown for one720p
Network1 differ
Mobile network connectionKnown for oneYes
Mobile network generationKnown for one4G
2G standardsKnown for oneEdge, GPRS, GSM
3G standardsKnown for oneHSPA+
4G standardKnown for oneLTE
Wi-Fi standardsDiffersWi-Fi 5 (802.11ac)802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth Low Energy (BLE)Known for oneYes
Bluetooth versionKnown for one4.0
Ports & interfaces3 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers43
DisplayPorts quantityDiffers10
VGA (D-Sub) ports quantityDiffers01
Headphone outputsKnown for one1
Docking connectorKnown for oneYes
USB Sleep-and-ChargeKnown for oneYes
USB Sleep-and-Charge portsKnown for one1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityKnown for one1
Keyboard2 differ
Pointing deviceDiffersTouchpadClickpad
Numeric keypadDiffersYesNo
Keyboard number of keysKnown for one87
Full-size keyboardKnown for oneYes
Software1 differ
Operating system installedDiffersWindows 10 HomeWindows 10 Pro
Processor special features4 differ
Intel TSX-NIDiffersYesNo
Intel® Insider™Known for oneYes
Intel® Small Business Advantage (Intel® SBA)Known for oneYes
Processor ARK IDDiffers9746488194
Processor codeKnown for oneSR2EZ
Processor package sizeDiffers42 x 28 mm42 X 24 mm
Supported instruction setsDiffersAVX 2.0, SSE4.1, SSE4.2SSE4.1, SSE4.2, AVX 2.0
Intel HD GraphicsKnown for oneYes
Intel® Smart CacheKnown for oneYes
Battery2 differ
Battery technologyDiffersLithium-Ion (Li-Ion)Lithium Polymer (LiPo)
Number of battery cellsDiffers84
Battery life (max)Known for one11 h
Battery capacityKnown for one88 Wh
Poweridentical
AC adapter input voltageKnown for one100 - 240 V
AC adapter output currentKnown for one2.37 A
AC adapter powerKnown for one330 W
Sustainabilityidentical
Sustainability certificatesKnown for oneENERGY STAR
Weight & dimensions5 differ
WeightDiffers8.5 kg1.36 kg
WidthDiffers568 mm316 mm
DepthDiffers314.5 mm227 mm
Height (front)Differs6.88 cm1.59 cm
Height (rear)Differs8.32 cm1.99 cm
HeightKnown for one83.3 mm
Packaging contentidentical
Cables includedKnown for oneAC
Power cord includedKnown for oneYes
Performanceidentical
Motherboard chipsetKnown for oneIntel® CM238
Securityidentical
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
Password protection typeKnown for oneBIOS, HDD, Supervisor, User

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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