Realme GT Master Edition vs Xiaomi 15 Ultra
Head-to-head specifications
| Metric | Realme GT Master Edition | Xiaomi 15 Ultra | Difference |
|---|---|---|---|
| AnTuTu v10 score | 520,000 | 2,758,993 | -81.2% |
| Chipset | Snapdragon 778G | Snapdragon 8 Elite | — |
| Display | 6.4" 120 Hz | 6.7" 120 Hz | — |
| Battery (mAh) | 4,300 | 600 | +616.7% |
| Rear cameras | 64+8+2 MP | 50+200+50+50 MP | — |
| Front camera (MP) | 32 | 32 | — |
| RAM / storage (base) | 6 GB / 128 GB | 12 GB / 256 GB | — |
| Max configuration | 8 GB / 256 GB | 16 GB / 1024 GB | — |
| Weight (g) | 174 | 225 | -22.7% |
| Connectivity / unlock | 5G · Under-display | 5G · Under-display | — |
| Launch price (USD) | $399–$459 | $1,299–$1,549 | -69.3% |
- Xiaomi 15 Ultra leads on raw performance by about 81% on AnTuTu v10 (Snapdragon 778G vs Snapdragon 8 Elite).
- Realme GT Master Edition is the cheaper option at launch pricing, though these phones launched 4 years apart — street prices will differ from launch MSRPs.
Verdict: GT Master Edition or Xiaomi 15 Ultra?
Realme GT Master Edition advantages
- Battery capacity (+86%)
- Lightness (+23%)
- Affordability (+69%)
Xiaomi 15 Ultra advantages
- Raw performance (+81%)
- Camera resolution (+68%)
- Memory (+50%)
Which should you choose?
- Choose the Realme GT Master Edition if you need all-day (or two-day) battery life.
- Choose the Xiaomi 15 Ultra if you game or want the most headroom for years of updates.
- Choose the Realme GT Master Edition if you want a lighter phone for one-handed use.
Value for money
Xiaomi 15 Ultra delivers more performance per dollar, making it the better value of the two at their listed prices.
Realme GT Master Edition vs Xiaomi 15 Ultra: which should you choose?
Realme GT Master Edition — Realme Android 11 smartphone (2021) with a 6.43-inch 120 Hz Super AMOLED, Snapdragon 778G, 4300 mAh battery and 64MP main camera, scoring about 520,000 on AnTuTu v10; launched at $399.
Xiaomi 15 Ultra — Xiaomi Android 15 smartphone (2025) with a 6.73-inch 120 Hz LTPO AMOLED, Snapdragon 8 Elite, 600 mAh battery and 200MP main camera, scoring about 2,758,993 on AnTuTu v10; launched at $1,299.
Realme GT Master Edition vs Xiaomi 15 Ultra: Xiaomi 15 Ultra is the faster phone. Xiaomi 15 Ultra leads on raw performance by about 81% on AnTuTu v10 (Snapdragon 778G vs Snapdragon 8 Elite). Realme GT Master Edition is the cheaper option at launch pricing, though these phones launched 4 years apart — street prices will differ from launch MSRPs.
Performance and everyday use
The Xiaomi 15 Ultra is the faster device on raw benchmarks (2,758,993 vs 520,000 on AnTuTu v10), running the Snapdragon 8 Elite against the Snapdragon 778G. For messaging, browsing and social apps both feel instant — the gap matters most for gaming and long-term headroom.
Display and battery
Realme GT Master Edition carries a 6.4-inch 120 Hz Super AMOLED against a 6.7-inch 120 Hz LTPO AMOLED on the Xiaomi 15 Ultra. Batteries are 4,300 and 600 mAh — though software tuning and chipset efficiency shape real-world endurance as much as capacity.
Cameras, storage and price
Rear arrays are 64+8+2 MP versus 50+200+50+50 MP, with 32 MP and 32 MP front cameras. Base configurations start at 6 GB / 128 GB and 12 GB / 256 GB. The Realme GT Master Edition is the more affordable at about $399 launch price, which may matter more than a small spec gap.
The verdict
Both are credible choices in the smartphone comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the Realme GT Master Edition better than the Xiaomi 15 Ultra?
These two are closely matched — the right pick comes down to which specific strengths you value and the price you actually pay. Xiaomi 15 Ultra leads on raw performance by about 81% on AnTuTu v10 (Snapdragon 778G vs Snapdragon 8 Elite).
What is the main difference between the Realme GT Master Edition and the Xiaomi 15 Ultra?
Xiaomi 15 Ultra leads on raw performance by about 81% on AnTuTu v10 (Snapdragon 778G vs Snapdragon 8 Elite). Realme GT Master Edition is the cheaper option at launch pricing, though these phones launched 4 years apart — street prices will differ from launch MSRPs.
Which is better value?
Xiaomi 15 Ultra delivers more performance per dollar, making it the better value of the two at their listed prices.
Which should I choose?
Choose the Realme GT Master Edition if you need all-day (or two-day) battery life. Choose the Xiaomi 15 Ultra if you game or want the most headroom for years of updates.
Methodology
Smartphones are compared on AnTuTu v10 benchmark scores, chipset, display size and refresh rate, battery capacity, rear and front camera resolution, RAM and storage across launch variants, weight, and launch pricing (USD). Each model shows its base variant with the top-spec configuration noted where multiple variants exist. Benchmark scores reflect the listed chipset variant; real-world battery life and camera quality depend on software tuning, not just hardware numbers.