Vivo iQOO 15 Ultra vs Vivo Y300 GT
The Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo Y300 GT (2025) runs on the MediaTek Dimensity 8400. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 65/100 (a 24-point difference). Key differences: the Vivo Y300 GT has the bigger battery (7620 mAh vs 7400); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 2,067,824); the Vivo Y300 GT is noticeably lighter (212g vs 227g).
Profile comparison
Category scores
Vivo iQOO 15 Ultra
Vivo Y300 GT
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 2067824
- Better Geekbench Single: 3639 vs 1579
- Better Geekbench Multi: 11047 vs 6100
- Faster charging: 120W vs 90W
- Higher performance (99/100 vs 77/100)
- Better camera (78/100 vs 32/100)
- Longer battery life (92/100 vs 71/100)
- Better display (99/100 vs 94/100)
What makes Vivo Y300 GT better?
- Bigger battery: 7620 vs 7400 mAh
- Lighter: 212g vs 227g
- Better portability (51/100 vs 35/100)
Comparison verdict
Comparing the Vivo iQOO 15 Ultra vs the Vivo Y300 GT, the Vivo iQOO 15 Ultra scores 24 points higher (89/100 vs 65/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 77/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 71/100). In the "performance" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y300 GT (99/100 vs 77/100). In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y300 GT (78/100 vs 32/100). In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y300 GT (92/100 vs 71/100). In the "portability" category, the Vivo Y300 GT notably outperforms the Vivo iQOO 15 Ultra (51/100 vs 35/100).
Specs comparison
| Specification | Vivo iQOO 15 Ultra | Vivo Y300 GT | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | MediaTek Dimensity 8400 | |
| AnTuTu | 4602290 | 2067824 | |
| Geekbench Single | 3639 | 1579 | |
| Geekbench Multi | 11047 | 6100 | |
| Display | 6.8" LTPO AMOLED | 6.8" AMOLED | |
| Resolution | 1440x3168 | 1260x2800 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7400 mAh | 7620 mAh | |
| Charging | 120W | 90W | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 16 MP | |
| RAM | 12GB / 16GB / 24GB | 8GB / 12GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 15 | |
| Brightness (peak) | 8000 nits | 5500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP65 | |
| Dimensions | 163.7×76.8×8.7 mm | 163.7×75.9×8.1 mm | |
| Weight | 227 g | 212 g | |
| Launch price | $799 | — |
Camera comparison
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo Y300 GT
- Main: 50MP
- Front: 16MP
Display comparison
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo Y300 GT
- 6.8" AMOLED
- Resolution: 1260x2800
- Refresh rate: 144 Hz
Battery and charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Vivo Y300 GT
- 7620 mAh
- Wired: 90W
- No wireless charging
Overall performance score
We compared Vivo iQOO 15 Ultra and Vivo Y300 GT, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Vivo Y300 GT by 122.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Vivo Y300 GT
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y300 GT (99/100 vs 77/100).
display
In the "display" category, the Vivo iQOO 15 Ultra is a bit better (99/100 vs 94/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Vivo Y300 GT (78/100 vs 32/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra notably outperforms the Vivo Y300 GT (92/100 vs 71/100).
portability
In the "portability" category, the Vivo Y300 GT notably outperforms the Vivo iQOO 15 Ultra (51/100 vs 35/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 Ultra or the Vivo Y300 GT?
The Vivo iQOO 15 Ultra significantly outperforms the Vivo Y300 GT by 24 points (89/100 vs 65/100).
What is the rating of the Vivo iQOO 15 Ultra and the Vivo Y300 GT?
The Vivo iQOO 15 Ultra has a MobileRank rating of 89/100, the Vivo Y300 GT — 65/100.
Which has the better camera: the Vivo iQOO 15 Ultra or the Vivo Y300 GT?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 32/100).
Which is more powerful: the Vivo iQOO 15 Ultra or the Vivo Y300 GT?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 77/100).
Should you choose the Vivo iQOO 15 Ultra over the Vivo Y300 GT?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo Y300 GT is a better fit for active users.