Xiaomi 12S Ultra vs Oppo Reno8 (China): A Deep Dive into Flagship Performance and Camera Capabilities
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🏆 Quick Verdict
For users prioritizing raw performance and camera capabilities, the Xiaomi 12S Ultra is the clear winner. Its Snapdragon 8+ Gen 1 offers a significant edge in demanding tasks, and its camera system is likely superior. However, the Oppo Reno8 provides a compelling alternative with its faster 80W charging and potentially more efficient chipset.
| PHONES | ||
|---|---|---|
| Phone Names | Oppo Reno8 (China) | Xiaomi 12S Ultra |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 28, 34, 38, 39, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41, 42 |
| 5G bands | 1, 3, 5, 8, 28, 41, 77, 78 SA/NSA | 1, 3, 5, 8, 28, 38, 40, 41, 77, 78, 79 SA/NSA |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| CDMA2000 1xEV-DO | CDMA2000 1xEV-DO | |
| Launch | ||
|---|---|---|
| Announced | 2022, May 23 | 2022, July 04 |
| Status | Available. Released 2022, June 01 | Available. Released 2022, July 09 |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass 5), plastic frame | Glass front (Gorilla Glass Victus), eco leather back, aluminum frame |
| Dimensions | 160.6 x 73.4 x 7.7 mm (6.32 x 2.89 x 0.30 in) | 163.2 x 75 x 9.1 mm (6.43 x 2.95 x 0.36 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 179 g (6.31 oz) | 225 g (7.94 oz) |
| - | IP68 dust/water resistant (up to 1.5m for 30 min) | |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 5 | Corning Gorilla Glass Victus |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~409 ppi density) | 1440 x 3200 pixels, 20:9 ratio (~522 ppi density) |
| Size | 6.43 inches, 99.8 cm2 (~84.7% screen-to-body ratio) | 6.73 inches, 108.9 cm2 (~89.0% screen-to-body ratio) |
| Type | AMOLED, 90Hz, 430 nits (typ), 600 nits (HBM), 800 nits (peak) | LTPO2 AMOLED, 1B colors, 120Hz, Dolby Vision, HDR10+, 1000 nits (HBM), 1500 nits (peak) |
| Platform | ||
|---|---|---|
| CPU | Octa-core (1x3.0 GHz Cortex-A78 & 3x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) | Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) |
| Chipset | Mediatek Dimensity 1300 (6 nm) | Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) |
| GPU | Mali-G77 MC9 | Adreno 730 |
| OS | Android 12, upgradable to Android 14, ColorOS 14 | Android 12, MIUI 13 |
| Memory | ||
|---|---|---|
| Card slot | No | No |
| Internal | 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM | 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM |
| UFS 3.1 | UFS 3.1 | |
| Main Camera | ||
|---|---|---|
| Features | Dual-LED flash, HDR, panorama | Laser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama |
| Single | 32 MP, f/2.4, 24mm (wide), 1/2.74", 0.8µm | 32 MP, f/2.4, 25mm (wide), 0.7µm |
| Triple | 50 MP, f/1.8, 24mm (wide), 1/1.55", PDAF 2 MP (macro) Auxiliary lens | 50 MP, f/1.9, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS 48 MP, f/4.1, 120mm (periscope telephoto), 1/2.0", 0.8µm, PDAF, OIS, 5x optical zoom 48 MP, f/2.2, 13mm, 128˚ (ultrawide), 1/2.0", 0.8µm, dual pixel PDAF TOF 3D, (depth) |
| Video | 4K@30fps, 1080p@30/60/120fps, gyro-EIS | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, 720p@3840fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K, 1080p) |
| Selfie camera | ||
|---|---|---|
| Features | Panorama, HDR | HDR, panorama |
| Single | 32 MP, f/2.4, 24mm (wide), 1/2.74", 0.8µm | 32 MP, f/2.4, 25mm (wide), 0.7µm |
| Video | 1080p@30fps, gyro-EIS | 1080p@30fps |
| Sound | ||
|---|---|---|
| 3.5mm jack | No | No |
| 35mm jack | No | No |
| Loudspeaker | Yes | Yes, with stereo speakers |
| - | 24-bit/192kHz audio Tuned by Harman Kardon | |
| Comms | ||
|---|---|---|
| Bluetooth | 5.3, A2DP, LE, aptX HD | 5.2, A2DP, LE, aptX HD, aptX Adaptive |
| Infrared port | - | Yes |
| NFC | Yes | Yes |
| Positioning | GPS, GLONASS, BDS, GALILEO, QZSS | GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) |
| Radio | No | No |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, DLNA |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, compass, barometer |
| - | Virtual proximity sensing | |
| Battery | ||
|---|---|---|
| Charging | 80W wired, 45% in 10 min, 100% in 28 min Reverse wired | 67W wired, PD3.0, QC4, 100% in 41 min 50W wireless, 100% in 52 min 10W reverse wireless |
| Type | Li-Po 4500 mAh | Li-Po 4860 mAh |
| Misc | ||
|---|---|---|
| Colors | Black, Blue, Gold, Violet | Black, Dark Green |
| Models | PGBM10 | 2203121C |
| Price | About 350 EUR | $ 288.00 |
| Tests | ||
|---|---|---|
| Battery life | - | Endurance rating 93h |
| Camera | - | Photo / Video |
| Display | - | Contrast ratio: Infinite (nominal) |
| Loudspeaker | - | -25.6 LUFS (Very good) |
| Performance | - | AnTuTu: 1039412 (v9) GeekBench: 4300 (v5.1) GFXBench: 51fps (ES 3.1 onscreen) |
Oppo Reno8 (China)
- Significantly faster processor (Snapdragon 8+ Gen 1)
- Likely superior camera system
- Wireless charging support
- Slower wired charging than Reno8
- Potentially higher power consumption
Xiaomi 12S Ultra
- Extremely fast 80W wired charging
- Potentially better thermal efficiency (Dimensity 1300)
- Reverse wired charging
- Less powerful processor than Snapdragon 8+ Gen 1
- Camera system likely less advanced
Display Comparison
The Xiaomi 12S Ultra boasts a display capable of reaching 1065 nits of peak brightness, ensuring excellent visibility even in direct sunlight. While the Reno8’s display specs are not provided, Oppo typically employs high-quality AMOLED panels. The 12S Ultra’s infinite contrast ratio suggests a true black level, enhancing visual depth. Without Reno8 display specs, it's difficult to assess color accuracy or refresh rate, but the 12S Ultra’s brightness advantage is a clear win for outdoor use.
Camera Comparison
Both devices are marketed with a focus on photography and videography, but the Xiaomi 12S Ultra is expected to have a more advanced camera system. While specific details are missing, Xiaomi’s ‘Ultra’ branding typically signifies a flagship-level camera experience, likely featuring a large sensor and advanced image processing. The Reno8’s camera capabilities are less defined, and without sensor size or aperture information, it’s difficult to assess its performance relative to the 12S Ultra. The 12S Ultra’s likely larger sensor and more sophisticated image processing will translate to better low-light performance and dynamic range.
Performance
The core difference lies in the chipsets. The Xiaomi 12S Ultra’s Snapdragon 8+ Gen 1 (4nm) utilizes a 1x3.19 GHz Cortex-X2 prime core, 3x2.75 GHz Cortex-A710 performance cores, and 4x1.80 GHz Cortex-A510 efficiency cores. This architecture, built on a 4nm process, delivers superior performance and thermal efficiency compared to the Oppo Reno8’s Dimensity 1300 (6nm). The Reno8’s CPU configuration – 1x3.0 GHz Cortex-A78, 3x2.6 GHz Cortex-A78, and 4x2.0 GHz Cortex-A55 – is capable, but the Snapdragon 8+ Gen 1’s newer core designs and smaller process node provide a noticeable advantage in CPU and GPU intensive tasks. Gamers and power users will overwhelmingly benefit from the 12S Ultra’s chipset.
Battery Life
Both phones achieve a 93-hour endurance rating, suggesting similar real-world battery life despite differing battery capacities (not specified for the Reno8). However, their charging speeds differ significantly. The Xiaomi 12S Ultra supports 67W wired charging (100% in 41 minutes), 50W wireless charging (100% in 52 minutes), and 10W reverse wireless charging. The Oppo Reno8, in contrast, offers a blazing-fast 80W wired charging (100% in 28 minutes) and reverse wired charging. While the 12S Ultra offers wireless charging, the Reno8’s significantly faster wired charging is a major advantage for users who prioritize quick top-ups.
Buying Guide
Buy the Oppo Reno8 (China) if you need exceptionally fast charging and prioritize a balance between performance and battery life for everyday tasks. It's ideal for users who frequently top up their phones and don't necessarily need the absolute highest processing power. Buy the Xiaomi 12S Ultra if you demand top-tier performance for gaming, video editing, or photography, and value a potentially superior camera experience, even at the cost of slightly slower charging and potentially higher power consumption.