Vivo iQOO 15 vs Vivo X300 E
The Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo X300 E (2026) runs on the Qualcomm Snapdragon 8 Gen 5; launch prices were $599 and $651. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 79/100 (a 7-point difference). Key differences: the Vivo X300 E has the bigger battery (7200 mAh vs 7000); the Vivo iQOO 15 is faster in AnTuTu (3,758,268 vs 2,886,527); the Vivo X300 E is noticeably lighter (200g vs 215g).
Profile comparison
Category scores
Vivo iQOO 15
Vivo X300 E
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3758268 vs 2886527
- Better Geekbench Single: 3013 vs 2833
- Better Geekbench Multi: 9287 vs 9119
- Faster charging: 100W vs 90W
- Cheaper at launch: $599 vs $651
- Higher performance (94/100 vs 90/100)
- Better camera (78/100 vs 64/100)
- Longer battery life (85/100 vs 70/100)
- Better display (99/100 vs 94/100)
What makes Vivo X300 E better?
- Bigger battery: 7200 vs 7000 mAh
- Lighter: 200g vs 215g
- Better portability (61/100 vs 48/100)
Comparison verdict
Comparing the Vivo iQOO 15 vs the Vivo X300 E, the Vivo iQOO 15 scores 7 points higher (86/100 vs 79/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 64/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 70/100). Value score: Vivo iQOO 15 — 86/100, Vivo X300 E — 72/100; 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 and the Vivo X300 E are nearly equal (94/100 vs 90/100). In the "display" category, the Vivo iQOO 15 is a bit better (99/100 vs 94/100). In the "camera" category, the Vivo iQOO 15 is a bit better (78/100 vs 64/100). In the "battery" category, the Vivo iQOO 15 notably outperforms the Vivo X300 E (85/100 vs 70/100). In the "portability" category, the Vivo X300 E is a bit better (61/100 vs 48/100).
Specs comparison
| Specification | Vivo iQOO 15 | Vivo X300 E | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Gen 5 | |
| AnTuTu | 3758268 | 2886527 | |
| Geekbench Single | 3013 | 2833 | |
| Geekbench Multi | 9287 | 9119 | |
| Display | 6.8" LTPO AMOLED | 6.6" AMOLED | |
| Resolution | 1440x3168 | 1260x2750 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7000 mAh | 7200 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 40W | 0W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 50 MP | 8 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 32 MP | 50 MP | |
| RAM | 12GB / 16GB | 12GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 6000 nits | 5000 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 163.7×76.8×8.1 mm | 157.5×74.3×7.8 mm | |
| Weight | 215 g | 200 g | |
| Launch price | $599 | $651 |
Camera comparison
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo X300 E
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 50MP
Display comparison
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Vivo X300 E
- 6.6" AMOLED
- Resolution: 1260x2750
- Refresh rate: 144 Hz
Battery and charging
Vivo iQOO 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
Vivo X300 E
- 7200 mAh
- Wired: 90W
- No wireless charging
Overall performance score
We compared Vivo iQOO 15 and Vivo X300 E, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads Vivo X300 E by 30.2% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $52. Vivo iQOO 15 was $52 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 and the Vivo X300 E are nearly equal (94/100 vs 90/100).
display
In the "display" category, the Vivo iQOO 15 is a bit better (99/100 vs 94/100).
camera
In the "camera" category, the Vivo iQOO 15 is a bit better (78/100 vs 64/100).
battery
In the "battery" category, the Vivo iQOO 15 notably outperforms the Vivo X300 E (85/100 vs 70/100).
portability
In the "portability" category, the Vivo X300 E is a bit better (61/100 vs 48/100).
Frequently asked questions
Which is better: the Vivo iQOO 15 or the Vivo X300 E?
The Vivo iQOO 15 edges out the Vivo X300 E by just 7 points — the two devices are very close in overall level.
What is the rating of the Vivo iQOO 15 and the Vivo X300 E?
The Vivo iQOO 15 has a MobileRank rating of 86/100, the Vivo X300 E — 79/100.
Which has the better camera: the Vivo iQOO 15 or the Vivo X300 E?
The Vivo iQOO 15 leads on camera score (78/100 vs 64/100).
Should you choose the Vivo iQOO 15 over the Vivo X300 E?
The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo X300 E is a better fit for gamers and power users.