Vivo iQOO 15 Ultra vs Vivo iQOO Z8x
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo iQOO Z8x (2023) runs on the Qualcomm Snapdragon 6 Gen 1. 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 6000); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 737,054); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Vivo iQOO Z8x doesn't; the Vivo iQOO Z8x is noticeably lighter (200g vs 227g).
Profile comparison
Category scores
Vivo iQOO 15 Ultra
Vivo iQOO Z8x
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 737054
- Better Geekbench Single: 3639 vs 930
- Better Geekbench Multi: 11047 vs 2700
- Bigger battery: 7400 vs 6000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 52/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 63/100)
- Better display (99/100 vs 66/100)
What makes Vivo iQOO Z8x better?
- Lighter: 200g vs 227g
- Better portability (48/100 vs 35/100)
Comparison verdict
Comparing the Vivo iQOO 15 Ultra vs the Vivo iQOO Z8x, 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 52/100). 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 63/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x (99/100 vs 52/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x (99/100 vs 66/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo iQOO Z8x (92/100 vs 63/100). In the "portability" category, the Vivo iQOO Z8x is a bit better (48/100 vs 35/100).
Specs comparison
| Specification | Vivo iQOO 15 Ultra | Vivo iQOO Z8x | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 6 Gen 1 | |
| AnTuTu | 4602290 | 737054 | |
| Geekbench Single | 3639 | 930 | |
| Geekbench Multi | 11047 | 2700 | |
| Display | 6.8" LTPO AMOLED | 6.6" IPS LCD | |
| Resolution | 1440x3168 | 1080x2388 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7400 mAh | 6000 mAh | |
| Charging | 120W | — | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 8 MP | |
| RAM | 12GB / 16GB / 24GB | 8GB / 12GB | |
| Storage | 256GB / 512GB / 1TB | 128GB / 256GB | |
| OS | Android 16 | Android 13, OriginOS 3 | |
| Brightness (peak) | 8000 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 163.7×76.8×8.7 mm | 164.6×75.8×9.1 mm | |
| Weight | 227 g | 200 g | |
| Launch price | $799 | — |
Camera comparison
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo iQOO Z8x
- Main: 50MP f/1.8
- Front: 8MP
Display comparison
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo iQOO Z8x
- 6.6" IPS LCD
- Resolution: 1080x2388
- Refresh rate: 120 Hz
Battery and charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo iQOO Z8x
- 6000 mAh
- No wireless charging
Overall performance score
We compared Vivo iQOO 15 Ultra and Vivo iQOO Z8x, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo iQOO Z8x by 524.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo iQOO Z8x
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x (99/100 vs 52/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x (99/100 vs 66/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo iQOO Z8x (92/100 vs 63/100).
portability
In the "portability" category, the Vivo iQOO Z8x is a bit better (48/100 vs 35/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 Ultra or the Vivo iQOO Z8x?
The Vivo iQOO 15 Ultra significantly outperforms the Vivo iQOO Z8x by 39 points (89/100 vs 50/100).
What is the rating of the Vivo iQOO 15 Ultra and the Vivo iQOO Z8x?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo iQOO Z8x — 50/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo iQOO Z8x?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 30/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo iQOO Z8x?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 52/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo iQOO Z8x?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.