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Product comparison · 2 laptops

Acer Predator 21 X GX21-71-75A9 Intel® Core™ i7 i7-7820HK Laptop vs Acer Predator Helios 300 PH317-51-7505 Intel® Core™ i7 i7-7700HQ Laptop

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  • 152specifications compared
  • 34differ
  • 118identical
  • 12known for one product only

Key differences

  • Display diagonal
    • 53.3 cm (21")
    • 43.9 cm (17.3")
  • Processor model
    • i7-7820HK
    • i7-7700HQ
  • Processor boost frequency
    • 3.9 GHz
    • 3.8 GHz
  • Processor frequency
    • 2.9 GHz
    • 2.8 GHz
  • Processor cache
    • 8 MB
    • 6 MB
  • Internal memory
    • 64 GB
    • 16 GB
  • Memory slots
    • 4x SO-DIMM
    • 2x SO-DIMM
  • Maximum internal memory
    • 64 GB
    • 32 GB

Side by side

Differences highlightedShow differences only
164 specifications
A

Acer

Predator 21 X GX21-71-75A9 Intel® Core™ i7 i7-7820HK Laptop

Model GX21-71-75A9

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B

Acer

Predator Helios 300 PH317-51-7505 Intel® Core™ i7 i7-7700HQ Laptop

Model PH317-51-7505

View product
Display1 differ
Display diagonalDiffers53.3 cm (21")43.9 cm (17.3")
Processor5 differ
Processor modelDiffersi7-7820HKi7-7700HQ
Processor boost frequencyDiffers3.9 GHz3.8 GHz
Processor frequencyDiffers2.9 GHz2.8 GHz
Processor cacheDiffers8 MB6 MB
Processor seriesDiffersIntel Core i7-7800 Mobile SeriesIntel Core i7-7700 Mobile Series
Memory3 differ
Internal memoryDiffers64 GB16 GB
Memory slotsDiffers4x SO-DIMM2x SO-DIMM
Maximum internal memoryDiffers64 GB32 GB
Storage5 differ
Total storage capacityDiffers2 TB1.12 TB
HDD speedDiffers7200 RPM5400 RPM
Number of SSDs installedDiffers21
SSD capacityDiffers512 GB128 GB
Compatible memory cardsDiffersSDSD, SDXC
SSD interfaceKnown for oneSATA III
Graphics3 differ
Discrete graphics card modelDiffersNVIDIA® GeForce® GTX 1080 SLINVIDIA® GeForce® GTX 1050 Ti
Discrete graphics card memoryDiffers16 GB4 GB
Discrete graphics memory typeDiffersGDDR5XGDDR5
NVIDIA G-SYNCKnown for oneYes
Number of discrete graphics cards installedKnown for one1
Audio1 differ
Number of built-in speakersDiffers42
Number of microphonesKnown for one2
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers02
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers41
DisplayPorts quantityDiffers10
Keyboardidentical
Keyboard backlitKnown for oneYes
Processor special features3 differ
Intel HD GraphicsKnown for oneYes
Intel TSX-NIDiffersYesNo
Intel TSX-NI versionDiffers1.000.00
Processor ARK IDDiffers9746497185
Battery3 differ
Battery technologyDiffersLithium-Ion (Li-Ion)Lithium Polymer (LiPo)
Number of battery cellsDiffers84
Battery capacityDiffers88 Wh48 Wh
Battery life (max)Known for one7 h
Power1 differ
AC adapter powerDiffers330 W135 W
Securityidentical
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
Password protectionKnown for oneYes
Password protection typeKnown for oneBIOS, HDD, Supervisor, User
Fingerprint readerKnown for oneNo
Weight & dimensions6 differ
WeightDiffers8.5 kg3 kg
WidthDiffers568 mm432.3 mm
DepthDiffers314.5 mm289.9 mm
HeightDiffers83.3 mm29 mm
Height (front)Differs6.88 cm2.9 cm
Height (rear)Differs8.32 cm2.9 cm

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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