The Oppo A77 and Xiaomi Redmi Note 12R represent compelling options in the crowded budget smartphone market. While both aim for affordability, they take different approaches to performance and efficiency, centering around their respective chipsets: the Mediatek Dimensity 810 and the Qualcomm Snapdragon 4 Gen 2. This comparison dives deep into the nuances of these processors and their impact on the user experience.
🏆 Quick Verdict
For the average user prioritizing long-term efficiency and a smoother overall experience, the Xiaomi Redmi Note 12R is the better choice. Its Snapdragon 4 Gen 2, built on a 4nm process, offers superior power efficiency compared to the Oppo A77’s 6nm Dimensity 810, translating to better battery life and potentially less thermal throttling during sustained use.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 66 | 1, 3, 5, 8, 34, 38, 39, 40, 41 |
| 5G bands | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA | 1, 5, 8, 28, 41, 78 SA/NSA |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE / 5G | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| Launch |
|---|
| Announced | 2022, June 01 | 2023, June 28 |
| Status | Available. Released 2022, June 10 | Available. Released 2023, June 28 |
| Body |
|---|
| Build | Glass front, plastic frame, plastic back | Glass front, plastic frame, glass back |
| Dimensions | 163.8 x 75.1 x 8 mm (6.45 x 2.96 x 0.31 in) | 168.6 x 76.3 x 8.2 mm (6.64 x 3.00 x 0.32 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 190 g (6.70 oz) | 199 g (7.02 oz) |
| | IPX4 water resistant | - |
| Display |
|---|
| Resolution | 720 x 1612 pixels, 20:9 ratio (~269 ppi density) | 1080 x 2460 pixels (~396 ppi density) |
| Size | 6.56 inches, 103.4 cm2 (~84.0% screen-to-body ratio) | 6.79 inches, 109.5 cm2 (~85.1% screen-to-body ratio) |
| Type | IPS LCD, 90Hz, 480 nits (typ), 600 nits (HBM) | IPS LCD, 90Hz, 550 nits |
| Platform |
|---|
| CPU | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) | Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55) |
| Chipset | Mediatek Dimensity 810 (6 nm) | Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) |
| GPU | Mali-G57 MC2 | Adreno 613 |
| OS | Android 12, upgradable to Android 14, ColorOS 14 | Android 13, MIUI 14 |
| Memory |
|---|
| Card slot | microSDXC | microSDXC (uses shared SIM slot) |
| Internal | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM |
| | UFS 2.2 | - |
| Main Camera |
|---|
| Dual | 48 MP, f/1.7, 26mm (wide), PDAF
Auxiliary lens | 50 MP, f/1.8, (wide), PDAF
2 MP (macro) |
| Features | LED flash, HDR, panorama | LED flash, HDR |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera |
|---|
| Features | Panorama | HDR |
| Single | 8 MP, f/2.0, 26mm (wide) | 5 MP, f/2.2, (wide), 1/5.0", 1.12µm |
| Video | 1080p@30fps | 1080p@30fps |
| Sound |
|---|
| 3.5mm jack | Yes | - |
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes, with stereo speakers | Yes |
| Comms |
|---|
| Bluetooth | 5.3, A2DP, LE, aptX HD | 5.3, A2DP, LE |
| Infrared port | - | Yes |
| NFC | Yes | Yes (market/region dependent) |
| Positioning | GPS, GLONASS, BDS, GALILEO, QZSS | GPS, GLONASS, GALILEO, BDS |
| Radio | No | No |
| USB | USB Type-C 2.0, OTG | USB Type-C |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Features |
|---|
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | Fingerprint (side-mounted), accelerometer, compass |
| Battery |
|---|
| Charging | 33W wired, 53% in 30 min | 18W wired, PD |
| Type | Li-Po 5000 mAh | Li-Po 5000 mAh |
| Misc |
|---|
| Colors | Ocean Blue, Midnight Black | Black, Blue, Silver |
| Models | CPH2339 | 23076RA4BC |
| Price | € 149.90 / £ 159.00 | About 150 EUR |
Oppo A77
- Faster 33W charging speed.
- Potentially higher burst CPU performance for short tasks.
- Oppo's ColorOS interface may appeal to some users.
- Less efficient 6nm Dimensity 810 chipset.
- Likely to throttle more under sustained load.
- Potentially shorter battery life.
Xiaomi Redmi Note 12R
- More efficient 4nm Snapdragon 4 Gen 2 chipset.
- Better sustained performance and thermal management.
- Power Delivery (PD) charging compatibility.
- Slower 18W charging speed.
- Slightly lower peak CPU clock speeds.
- Xiaomi's MIUI interface can be polarizing.
Display Comparison
Neither device's display specifications are provided, so a direct comparison is impossible. However, given the price bracket, both likely utilize LCD panels with 60Hz refresh rates. The user experience will likely hinge on color calibration and brightness, which would require hands-on testing. Bezels are also likely to be similar, prioritizing cost reduction over premium aesthetics.
Camera Comparison
Without detailed camera specifications, a comprehensive comparison is limited. However, it’s reasonable to assume both phones feature a primary camera and potentially a depth or macro sensor. The image processing algorithms will likely differ, with Xiaomi often leaning towards more saturated colors and Oppo favoring a more natural look. Sensor size and aperture are critical factors, but absent that data, it’s difficult to determine which phone captures better images. The Redmi Note 12R’s more efficient chipset *could* allow for more sophisticated image processing without significant performance impact.
Performance
The core difference lies in the chipsets. The Oppo A77’s Dimensity 810 utilizes a 6nm process and features a CPU configuration of 2x2.4 GHz Cortex-A76 cores and 6x2.0 GHz Cortex-A55 cores. The Redmi Note 12R, however, employs the Qualcomm SM4450 Snapdragon 4 Gen 2, fabricated on a more efficient 4nm node, with 2x2.2 GHz Cortex-A78 cores and 6x1.95 GHz Cortex-A55 cores. While the clock speeds are comparable, the 4nm process gives the Snapdragon 4 Gen 2 a significant advantage in thermal efficiency. The Cortex-A78 cores in the Snapdragon also offer a performance uplift over the A76 cores in the Dimensity 810, particularly in multi-threaded tasks. This translates to smoother multitasking and potentially better gaming performance on the Redmi Note 12R.
Battery Life
The Oppo A77 supports 33W wired charging, claiming a 53% charge in 30 minutes. The Redmi Note 12R offers 18W wired charging with Power Delivery (PD). While the Oppo A77 charges faster initially, the Redmi Note 12R’s more efficient Snapdragon 4 Gen 2 chipset will likely result in better overall battery life. The 4nm process consumes less power, allowing the Redmi Note 12R to extract more usage from a similarly sized battery. The inclusion of PD also offers wider compatibility with chargers.
Buying Guide
Buy the Oppo A77 if you prioritize raw CPU burst performance for short tasks and benefit from its slightly faster 33W charging. This phone suits users who occasionally play less demanding games or perform quick app switching. Buy the Xiaomi Redmi Note 12R if you value sustained performance, better battery life, and a more efficient chipset for everyday tasks. This is the better option for users who stream videos, browse the web extensively, or play mobile games for longer periods.
Frequently Asked Questions
❓ Will the Snapdragon 4 Gen 2 in the Redmi Note 12R handle demanding games like PUBG Mobile?
While the Snapdragon 4 Gen 2 isn't a flagship chipset, it's capable of running PUBG Mobile at medium settings with a stable frame rate. The 4nm process and improved thermal efficiency will help prevent significant throttling during extended gaming sessions, offering a more consistent experience than the Dimensity 810.
❓ How much of a difference will the charging speed difference actually make in daily use?
The Oppo A77's 33W charging will get you to 50% faster initially. However, the Redmi Note 12R’s superior efficiency means you’ll likely be reaching for the charger less frequently overall. The convenience of faster initial charging is offset by the Redmi Note 12R’s longer battery life.
❓ Is the difference between Cortex-A76 and Cortex-A78 cores significant for everyday tasks?
For basic tasks like browsing, social media, and messaging, the difference is minimal. However, the Cortex-A78 cores in the Snapdragon 4 Gen 2 offer a noticeable performance boost in more demanding applications and multitasking scenarios, resulting in a smoother and more responsive user experience.
