Realme X3 vs Vivo iQOO 15 Ultra
The Realme X3 (2020) runs on the Qualcomm Snapdragon 855+, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 50/100 (a 39-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 4200); the main camera is 64 MP vs 50 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 859,084); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Realme X3 doesn't; the Realme X3 is noticeably lighter (202g vs 227g).
Realme X3
Vivo iQOO 15 Ultra
- Better main camera: 64MP vs 50MP
- Lighter: 202g vs 227g
- Better portability (48/100 vs 35/100)
- Higher AnTuTu: 4602290 vs 859084
- Better Geekbench Single: 3640 vs 1031
- Better Geekbench Multi: 11033 vs 2864
- Bigger battery: 7400 vs 4200 mAh
- Faster charging: 120W vs 30W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 55/100)
- Better camera (78/100 vs 48/100)
- Longer battery life (92/100 vs 28/100)
- Better display (99/100 vs 70/100)
Comparing the Realme X3 vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 39 points higher (89/100 vs 50/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 55/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 48/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 28/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme X3 (99/100 vs 55/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Realme X3 (99/100 vs 70/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme X3 (78/100 vs 48/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme X3 (92/100 vs 28/100). In the "portability" category, the Realme X3 is a bit better (48/100 vs 35/100).
| Specification | Realme X3 | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 859084 | 4602290 | |
| Geekbench Single | 1031 | 3640 | |
| Geekbench Multi | 2864 | 11033 | |
| Display | 6.0" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 1080x2400 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 4200 mAh | 7400 mAh | |
| Charging | 30W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 12 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB / 24GB | |
| Storage | 128GB | 256GB / 512GB / 1TB | |
| OS | Android 10, Realme UI | Android 16 | |
| Brightness (peak) | — | 8000 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.8×75.8×8.9 mm | 163.7×76.8×8.7 mm | |
| Weight | 202 g | 227 g | |
| Launch price | — | $799 |
Realme X3
- Main: 64MP f/f/1.8
- Ultrawide: 8MP
- Telephoto: 12MP
- Front: 16MP
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Realme X3
- 6.0" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Realme X3
- 4200 mAh
- Wired: 30W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
We compared Realme X3 and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Realme X3 by 81.3% in our overall performance rating.
Realme X3
Price unknownperformance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme X3 (99/100 vs 55/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Realme X3 (99/100 vs 70/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme X3 (78/100 vs 48/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme X3 (92/100 vs 28/100).
portability
In the "portability" category, the Realme X3 is a bit better (48/100 vs 35/100).
Which is better: the Realme X3 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Realme X3 by 39 points (89/100 vs 50/100).
What is the rating of the Realme X3 and the Vivo iQOO 15 Ultra?
The Realme X3 has a MobileRank rating of 50/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Realme X3 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 48/100).
Which is more powerful: the Realme X3 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 55/100).
Should you choose the Realme X3 over the Vivo iQOO 15 Ultra?
The Realme X3 is a better fit for everyday use. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.