Xiaomi 15 Specifications
Before diving into the performance review of the Xiaomi 15, let’s take a look at its impressive specifications.
| Xiaomi 15 | |
| Display | LTPO OLED, 6.36 inch
Resolution: 1200 × 2670 pixels Refresh rate: 120Hz Peak brightness: 3200 nits |
| Processor | Snapdragon 8 Elite (3 nm) |
| Operating System | Android 15, HyperOS 2 |
| RAM | 12GB/16GB |
| Internal Storage | 256GB/512GB/1TB |
| Battery Capacity | 5400 mAh |
XIAOMI 15 5G Ai (for Tmobile Mint Tello & Global Outside USA) (512GB + 12GB) 50MP Triple Pro Leica Camera 6.36″ Dual Sim NFC Model 24129PN74G (Black):
XIAOMI 15 5G Ai (for Tmobile Mint Tello & Global Outside USA) (512GB + 12GB) 50MP Triple Pro Leica Camera 6.36″ Dual Sim NFC Model 24129PN74G (Green):
The Xiaomi 15 features specifications which demonstrate their suitability for gaming purposes. The device screen measures 6.36 inches yet the LTPO OLED panel produces high-resolution images which display gaming details and regular entertainment content with exceptional clarity. The system creates an improved user experience through its 120Hz refresh rate and 3200 nits maximum brightness capacity.
The device operates continuously because of its 5400mAh battery capacity. The device maintained 40% battery capacity after 6 hours of mixed task testing which included 4K video playback and social media browsing and Honor of Kings gameplay at 1 hour intervals.
The Xiaomi 15 ranks among the initial smartphones which feature Qualcomm’s Snapdragon 8 Elite chip which represents the company’s highest-end processor. The system combines two Phoenix L super-large cores which operate at 4.32GHz with six Phoenix M large cores which run at 3.53GHz to create its advanced Oryon CPU architecture. The design enables better multitasking abilities while it optimizes resource-intensive activities that include gaming.
The processor features a cache capacity which stands out as its main advantage. The system includes two super-large cores which have L1 192KB and L2 12MB cache memory together with six large cores which possess L1 128KB and L2 12MB cache storage. The combined system delivers a 40% performance gain which operates at 40% less power while achieving 35% better Ray Tracing performance than its previous version. The Xiaomi 15 uses this technology to render high-quality game graphics which maintain low temperature levels.
Xiaomi 15 Performance Score
The Xiaomi 15 reached exceptional performance results because of its complete optimal specifications which received testing on various performance assessment systems.
AnTuTu Score
The smartphone achieved an AnTuTu score of 3,091,543 which exceeds the performance of most current flagship devices. The detailed performance results show:
CPU: 701,091 points
GPU: 1,301,892 points
Memory: 611,562 points
UX: 476,998 points
The device demonstrates exceptional graphic processing power and its ability to run multiple tasks simultaneously. The Xiaomi 15 uses Adreno 830 GPU technology which operates at 1,100 MHz and has 3,072 shading units to deliver outstanding performance in demanding video games while maintaining operational efficiency.
Geekbench 6 Scores
The Xiaomi 15 achieved 3132 single-core points and 9608 multi-core points on the Geekbench 6 test. The 8-core Oryon (Phoenix) architecture CPU delivers fast processing through its powerful performance because it can handle both simple and complicated tasks. The software provides users with value because it helps them complete their work in gaming and hardware-demanding programs and video editing tasks.
Xiaomi 15 Gaming Performance Review
The Xiaomi 15 delivers an excellent gaming experience through its Snapdragon 8 Elite chip which provides strong performance results on AnTuTu and Geekbench 6 testing platforms. We will evaluate the system using popular games which include Honor of Kings and Genshin Impact and Honkai: Star Rail.
Honor of Kings
The Xiaomi 15 enables users to play Honor of Kings with maximum graphical settings. The gameplay reached an average frame rate of 120.23 fps after 30 minutes which maintained its stability through a straight frame rate graph. The device operated without any lag which showed its excellent performance optimization.
The front temperature reached 36.8°C and the back temperature reached 34.9°C after gameplay because the device maintained a comfortable range of temperatures which confirmed that its cooling system operated successfully during this game.
Genshin Impact
The highest settings of Genshin Impact showed an average frame rate of 59.83 fps which created a smooth gaming experience. The complex scenes showed a drop in fps to 45 which did not affect the overall experience.
The device reached high temperatures of 41.9°C on the front and 40.2°C on the back. The Xiaomi 15 shows impressive performance in its segment because its heat sink area is smaller than the Pro version but it performs better than expected.
Honkai: Star Rail
The Xiaomi 15 maintains a frame rate of 59.23 fps while running Honkai: Star Rail at its highest graphical settings. The system maintains stable performance because it creates infrequent fps drops which reach a maximum of 46.
The device reached a maximum temperature of 46.8°C in the controller area after 30 minutes which created a heat sensation that would disturb players during long gaming sessions. The use of extra cooling equipment such as heatsinks provides an effective method for sustaining performance while safeguarding the device.
The Xiaomi 15 serves as a top gaming option due to its exceptional performance and advanced graphics capabilities. The Xiaomi 15 provides gamers with a consistent performance that maintains high frame rates throughout both simple and complex games which include Honor of Kings and Genshin Impact and Honkai: Star Rail. The device operates effectively under heat stress because its thermal management system handles intense gaming situations, which cause occasional temperature increases.
The Xiaomi 15 operates with strong processing capabilities which enable the Snapdragon 8 Elite chip to deliver continuous performance throughout extended periods of usage. The Xiaomi 15 serves as the ideal solution for you, if you frequently play demanding video games that require advanced graphical capabilities.
Tech Reviewer & Product Analyst
Định Bia has spent over 10 years testing consumer electronics with a focus on smart technology. He work as a product advisor at Biareview where he helped customers find the right devices for their needs. He personally tests every product featured on this site using a consistent evaluation framework covering quality, durability, and value. All reviews are based on experience, not influenced by the manufacturer.