Oppo K14x vs Vivo iQOO 15 Ultra
The Oppo K14x (2026) runs on the MediaTek Dimensity 6300, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $172 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 43/100 (a 46-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 6500); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 528,398); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Oppo K14x doesn't; the Oppo K14x is noticeably lighter (212g vs 227g).
Profile comparison
Category scores
Oppo K14x
Vivo iQOO 15 Ultra
What makes Oppo K14x better?
- Lighter: 212g vs 227g
- Cheaper at launch: $172 vs $799
- Better portability (46/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 528398
- Better Geekbench Single: 3639 vs 771
- Better Geekbench Multi: 11047 vs 1980
- Bigger battery: 7400 vs 6500 mAh
- Faster charging: 120W vs 5W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 43/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 53/100)
- Better display (99/100 vs 55/100)
Comparison verdict
Comparing the Oppo K14x vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 46 points higher (89/100 vs 43/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 43/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 53/100). Value score: Oppo K14x — 54/100, Vivo iQOO 15 Ultra — 92/100; 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 Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (99/100 vs 43/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (99/100 vs 55/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (92/100 vs 53/100). In the "portability" category, the Oppo K14x is a bit better (46/100 vs 35/100).
Specs comparison
| Specification | Oppo K14x | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Dimensity 6300 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 528398 | 4602290 | |
| Geekbench Single | 771 | 3639 | |
| Geekbench Multi | 1980 | 11047 | |
| Display | 6.8" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1570 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 6500 mAh | 7400 mAh | |
| Charging | 5W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB / 24GB | |
| Storage | 128GB | 256GB / 512GB / 1TB | |
| OS | Android 15, ColorOS 15 | Android 16 | |
| Brightness (peak) | 1125 nits | 8000 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 166.6×78.5×8.6 mm | 163.7×76.8×8.7 mm | |
| Weight | 212 g | 227 g | |
| Launch price | $172 | $799 |
Camera comparison
Oppo K14x
- Main: 50MP f/1.8
- Front: 5MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Oppo K14x
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Oppo K14x
- 6500 mAh
- Wired: 5W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Oppo K14x and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Oppo K14x by 88.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $627. Oppo K14x was $627 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (99/100 vs 43/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (99/100 vs 55/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x (92/100 vs 53/100).
portability
In the "portability" category, the Oppo K14x is a bit better (46/100 vs 35/100).
Frequently asked questions
Which is better: the Oppo K14x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Oppo K14x by 46 points (89/100 vs 43/100).
What is the rating of the Oppo K14x and the Vivo iQOO 15 Ultra?
The Oppo K14x has a MobileRank rating of 43/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Oppo K14x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 30/100).
Which is more powerful: the Oppo K14x or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 43/100).
Should you choose the Oppo K14x over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.