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  3. x16 R2 RTX 4090 (2024) vs Stealth 16 AI+ B3 RTX 5080 (2026)

Alienware x16 R2 RTX 4090 (2024) vs MSI Stealth 16 AI+ B3 RTX 5080 (2026)

What x16 R2 RTX 4090 (2024) does better (17) and where Stealth 16 AI+ B3 RTX 5080 (2026) wins (14) — every spec side by side.

Alienware x16 R2 RTX 4090 (2024)
Alienware · 2024x16 R2 RTX 4090 (2024)
9.1Score
17 advantages
vs
MSI Stealth 16 AI+ B3 RTX 5080 (2026)
MSI · 2026Stealth 16 AI+ B3 RTX 5080 (2026)
9.1Score
14 advantages≈ $4,200
Higher score
9.7Graphics9.5
9.3Overall performance9.4
5.9Display9.1
7.1Memory & storage5.2
4.4Battery & portability5.1
9.6Features & cooling6.0
Dimensions

Size comparison

x16 R2 RTX 4090 (2024)Stealth 16 AI+ B3 RTX 5080 (2026)
364.7 × 289.818.6354 × 24620
x16 R2 RTX 4090 (2024)Stealth 16 AI+ B3 RTX 5080 (2026)Difference
Depth289.8 mm246 mm+43.8 mm
Width364.7 mm354 mm+10.7 mm
Thickness18.6 mm20 mm−1.4 mm
Weight2.7 kg2 kg+0.7 kg

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

Why is x16 R2 RTX 4090 (2024) better than Stealth 16 AI+ B3 RTX 5080 (2026)?

  1. Refresh rate480 Hz vs 240 Hz2×
  2. SSD (up to)4,096 GB vs 1,000 GB4.1×
  3. GPU power (TGP)175 W vs 125 W+40%
  4. GPU compute (FP32)45.2 TFLOPS vs 32 TFLOPS+41%
  5. 3DMark Steel Nomad Light25,180 vs 21,645+16%
  6. GPU shader cores9,728 vs 7,680+27%
  7. G-Sync / FreeSyncYes · Stealth 16 AI+ B3 RTX 5080 (2026): No
  8. RAM typeLPDDR5X vs DDR5
  9. Cooling fans4 vs 22×
  10. Vapor chamber coolingYes · Stealth 16 AI+ B3 RTX 5080 (2026): No
  11. Liquid metal (CPU)Yes · Stealth 16 AI+ B3 RTX 5080 (2026): No
  12. SD card readerYes · Stealth 16 AI+ B3 RTX 5080 (2026): No

Why is Stealth 16 AI+ B3 RTX 5080 (2026) better than x16 R2 RTX 4090 (2024)?

  1. Resolution classFull HD (1080p/1200p) vs QHD (1440p/1600p)
  2. Panel typeIPS vs OLED
  3. Brightness300 nits vs 600 nits2×
  4. Weight2.66 kg vs 1.99 kg+34%
  5. Geekbench 6 multi-core13,420 vs 16,973+26%
  6. Response time3 ms vs 1 ms3×
  7. Cinebench 2024 multi-core1,012 vs 1,247+23%
  8. RAM (base)16 GB vs 32 GB2×
  9. Upgradable RAMNo · x16 R2 RTX 4090 (2024): Yes
  10. SSD (base)512 GB vs 1,000 GB+95%
  11. Pixel density142 ppi vs 189 ppi+33%
  12. Geekbench 6 single-core2,558 vs 2,859+12%
Specifications

Side by side

Alienware x16 R2 RTX 4090 (2024)Alienware x16 R2 RTX 4090 (2024)9.1
MSI Stealth 16 AI+ B3 RTX 5080 (2026)MSI Stealth 16 AI+ B3 RTX 5080 (2026)≈ $4,2009.1
Graphics
Graphics cardGeForce RTX 4090 LaptopGeForce RTX 5080 Laptop
GPU makerNVIDIANVIDIA
GPU power (TGP)175 W125 W
Video memory16 GB16 GB
Video memory typeGDDR6GDDR7
GPU shader cores9,7287,680
GPU compute (FP32)45.2 TFLOPS32 TFLOPS
3DMark Steel Nomad Light25,18021,645
Processor
ProcessorCore Ultra 7 155HCore Ultra 9 386H
CPU makerIntelIntel
CPU cores1616
CPU threads2216
Max CPU clock4.8 GHz4.9 GHz
Processor optionsCore Ultra 7 155H, Core Ultra 9 185HCore Ultra 9 386H
Geekbench 6 multi-core13,42016,973
Geekbench 6 single-core2,5582,859
Cinebench 2024 multi-core1,0121,247
Display
Screen size16″16″
Resolution1920 × 12002560 × 1600
Resolution classFull HD (1080p/1200p)QHD (1440p/1600p)
Refresh rate480 Hz240 Hz
Panel typeIPSOLED
Brightness300 nits600 nits
sRGB coverage—100%
Response time3 ms1 ms
DCI-P3 coverage100%100%
Pixel density142 ppi189 ppi
Aspect ratio16:1016:10
G-Sync / FreeSyncYesNo
Advanced OptimusNoNo
MUX switchYesYes
HDRNoNo
TouchscreenNoNo
Memory & storage
RAM (up to)32 GB32 GB
RAM (base)16 GB32 GB
RAM typeLPDDR5XDDR5
RAM speed7,467 MHz7,200 MHz
Max. supported RAM—128 GB
RAM slots—2
Upgradable RAMNoYes
SSD (up to)4,096 GB1,000 GB
SSD (base)512 GB1,000 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
USB-C charging power—100 W
Design & cooling
Weight2.66 kg1.99 kg
Thickness18.6 mm20 mm
Width364.7 mm354 mm
Depth289.8 mm246 mm
Body materialAluminiumAluminium
ColoursSilverBlack
Cooling fans42
Vapor chamber coolingYesNo
Liquid metal (CPU)YesNo
Fan noise (max. load)53.9 dB56.7 dB
Ports & wireless
Thunderbolt / USB4Thunderbolt 4USB4
Thunderbolt or USB4YesYes
USB-C ports22
USB-A ports22
HDMIHDMI 2.1HDMI 2.1
HDMI 2.1YesYes
(Mini) DisplayPortYesNo
Ethernet—5 Gbit/s
Ethernet portNoYes
SD card readerYesNo
3.5 mm audio jackYesYes
Wi-Fi standardWi-Fi 7Wi-Fi 7
Bluetooth5.46
Keyboard & camera
Backlit keyboardYesYes
Numeric keypadNoNo
Key travel1.8 mm—
Webcam1,080p1,080p
IR camera (face login)YesYes
Fingerprint readerNoYes
Audio
Speakers2.42.2
Dolby AtmosYesNo

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