Realme GT 8 vs Xiaomi 15 Ultra
The Realme GT 8 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $350 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 80/100 (a 5-point difference). Key differences: the Realme GT 8 has the bigger battery (7000 mAh vs 6000); the Realme GT 8 is faster in AnTuTu (3,126,402 vs 3,030,376); the Realme GT 8 is noticeably lighter (209g vs 225g).
Profile comparison
Category scores
Realme GT 8
Xiaomi 15 Ultra
What makes Realme GT 8 better?
- Higher AnTuTu: 3126402 vs 3030376
- Bigger battery: 7000 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 209g vs 225g
- Cheaper at launch: $350 vs $999
- Longer battery life (85/100 vs 80/100)
- Better display (98/100 vs 90/100)
- Better portability (50/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Better Geekbench Single: 3050 vs 3013
- Better Geekbench Multi: 10200 vs 9287
- Higher performance (92/100 vs 91/100)
- Better camera (87/100 vs 56/100)
Comparison verdict
Comparing the Realme GT 8 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 5 points higher (85/100 vs 80/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 56/100). Value score: Realme GT 8 — 94/100, Xiaomi 15 Ultra — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Xiaomi 15 Ultra and the Realme GT 8 are nearly equal (92/100 vs 91/100). In the "display" category, the Realme GT 8 is a bit better (98/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Realme GT 8 (87/100 vs 56/100). In the "battery" category, the Realme GT 8 is a bit better (85/100 vs 80/100). In the "portability" category, the Realme GT 8 notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
Specs comparison
| Specification | Realme GT 8 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3126402 | 3030376 | |
| Geekbench Single | 3013 | 3050 | |
| Geekbench Multi | 9287 | 10200 | |
| Display | 6.8" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1440x3136 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | — | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Dimensions | — | 161.3×75.3×9.4 mm | |
| Weight | 209 g | 225 g | |
| Launch price | $350 | $999 |
Camera comparison
Realme GT 8
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Realme GT 8
- 6.8" AMOLED
- Resolution: 1440x3136
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
Realme GT 8
- 7000 mAh
- Wired: 100W
- Wireless charging: no data
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Realme GT 8 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Realme GT 8 leads Xiaomi 15 Ultra by 3.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $649. Realme GT 8 was $649 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra and the Realme GT 8 are nearly equal (92/100 vs 91/100).
display
In the "display" category, the Realme GT 8 is a bit better (98/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Realme GT 8 (87/100 vs 56/100).
battery
In the "battery" category, the Realme GT 8 is a bit better (85/100 vs 80/100).
portability
In the "portability" category, the Realme GT 8 notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
Frequently asked questions
Which is better: the Realme GT 8 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra edges out the Realme GT 8 by just 5 points — the two devices are very close in overall level.
What is the rating of the Realme GT 8 and the Xiaomi 15 Ultra?
The Realme GT 8 has a MobileRank rating of 80/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Realme GT 8 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 56/100).
Should you choose the Realme GT 8 over the Xiaomi 15 Ultra?
The Realme GT 8 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.