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  3. X16 RTX 4080 (2023) vs ROG Zephyrus G16 GU605 RTX 5090 (2025)

Alienware X16 RTX 4080 (2023) vs Asus ROG Zephyrus G16 GU605 RTX 5090 (2025)

What X16 RTX 4080 (2023) does better (8) and where ROG Zephyrus G16 GU605 RTX 5090 (2025) wins (17) — every spec side by side.

Alienware X16 RTX 4080 (2023)
Alienware · 2023X16 RTX 4080 (2023)
8.7Score
8 advantages
vs
Asus ROG Zephyrus G16 GU605 RTX 5090 (2025)
9.5Score
17 advantages≈ $5,000
Higher score
9.6Graphics9.5
8.2Overall performance9.4
5.6Display9.5
6.6Memory & storage5.0
4.1Battery & portability9.0
9.1Features & cooling9.0
Dimensions

Size comparison

X16 RTX 4080 (2023)ROG Zephyrus G16 GU605 RTX 5090 (2025)
364.7 × 289.818.6354 × 24617
X16 RTX 4080 (2023)ROG Zephyrus G16 GU605 RTX 5090 (2025)Difference
Depth289.8 mm246 mm+43.8 mm
Width364.7 mm354 mm+10.7 mm
Thickness18.6 mm17 mm+1.6 mm
Weight2.7 kg2 kg+0.8 kg

Drawn to the same scale from the official dimensions (front and side).

Why is X16 RTX 4080 (2023) better than ROG Zephyrus G16 GU605 RTX 5090 (2025)?

  1. Refresh rate480 Hz vs 240 Hz2×
  2. GPU power (TGP)175 W vs 120 W+46%
  3. SSD (up to)4,096 GB vs 2,000 GB2×
  4. Advanced OptimusYes · ROG Zephyrus G16 GU605 RTX 5090 (2025): No
  5. USB-C ports3 vs 2+50%
  6. Cooling fans4 vs 3+33%
  7. Fan noise (max. load)54.8 dB vs 68 dB+24%
  8. Key travel1.8 mm vs 1.7 mm+6%

Why is ROG Zephyrus G16 GU605 RTX 5090 (2025) better than X16 RTX 4080 (2023)?

  1. Video memory12 GB vs 24 GB2×
  2. Resolution classFull HD (1080p/1200p) vs QHD (1440p/1600p)
  3. Panel typeIPS vs OLED
  4. Weight2.72 kg vs 1.95 kg+39%
  5. Brightness300 nits vs 500 nits+67%
  6. 3DMark Steel Nomad Light20,135 vs 24,671+23%
  7. CPU cores10 vs 16+60%
  8. Response time3 ms vs 1 ms3×
  9. SSD (base)256 GB vs 2,000 GB7.8×
  10. GPU shader cores7,424 vs 10,496+41%
  11. RAM (base)16 GB vs 32 GB2×
  12. RAM typeLPDDR5 vs LPDDR5X
Specifications

Side by side

Graphics
Graphics cardGeForce RTX 4080 LaptopGeForce RTX 5090 Laptop
GPU makerNVIDIANVIDIA
GPU power (TGP)175 W120 W
Video memory12 GB24 GB
Video memory typeGDDR6GDDR7
GPU shader cores7,42410,496
GPU compute (FP32)37.6 TFLOPS37.9 TFLOPS
3DMark Steel Nomad Light20,13524,671
Processor
ProcessorCore i7-13620HCore Ultra 9 285H
CPU makerIntelIntel
CPU cores1016
CPU threads16—
Max CPU clock4.9 GHz5.4 GHz
Processor optionsCore i7-13620H, Core i7-13700H, Core i9-13900HKCore i7-14650HX, Core Ultra 9 285H
Geekbench 6 multi-core12,672—
Geekbench 6 single-core2,531—
Cinebench 2024 multi-core841—
Display
Screen size16″16″
Resolution1920 × 12002560 × 1600
Resolution classFull HD (1080p/1200p)QHD (1440p/1600p)
Refresh rate480 Hz240 Hz
Panel typeIPSOLED
Brightness300 nits500 nits
sRGB coverage99%100%
Response time3 ms1 ms
DCI-P3 coverage99%100%
Pixel density142 ppi189 ppi
Aspect ratio16:1016:10
G-Sync / FreeSyncYesYes
Advanced OptimusYesNo
MUX switchYesYes
HDRYesYes
TouchscreenNoNo
Memory & storage
RAM (up to)32 GB32 GB
RAM (base)16 GB32 GB
RAM typeLPDDR5LPDDR5X
RAM speed6,400 MHz7,467 MHz
Upgradable RAMNoNo
SSD (up to)4,096 GB2,000 GB
SSD (base)256 GB2,000 GB
M.2 SSD slots22
SSD interfacePCIe 4.0 x4PCIe 4.0 x4
Battery & power
Battery capacity90 Wh90 Wh
Power adapter330 W240 W
USB-C charging (Power Delivery)YesYes
Design & cooling
Weight2.72 kg1.95 kg
Thickness18.6 mm17 mm
Width364.7 mm354 mm
Depth289.8 mm246 mm
Body materialAluminiumAluminium
ColoursBlack, SilverGrey
Cooling fans43
Vapor chamber coolingYesYes
Liquid metal (CPU)—Yes
Fan noise (max. load)54.8 dB68 dB
Ports & wireless
Thunderbolt / USB4Thunderbolt 4Thunderbolt 4
Thunderbolt or USB4YesYes
USB-C ports32
USB-A ports22
HDMIHDMI 2.1HDMI 2.1
HDMI 2.1YesYes
(Mini) DisplayPortYesNo
Ethernet portNoYes
SD card readerYesYes
3.5 mm audio jackYesYes
Wi-Fi standardWi-Fi 6EWi-Fi 7
Bluetooth5.35.4
Keyboard & camera
Backlit keyboardYesYes
Numeric keypadNoNo
Key travel1.8 mm1.7 mm
Webcam1,080p1,080p
IR camera (face login)YesYes
Fingerprint readerNoNo
Audio
Speakers2.44 speakers
Dolby AtmosYesYes
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