The mid-range smartphone market is fiercely competitive, and the Oppo K12x and OnePlus Ace 3V represent compelling options for users seeking performance without a flagship price tag. While both aim for a similar demographic, they take distinctly different approaches to achieving that goal – one prioritizing raw speed with Qualcomm’s latest 7+ Gen 3, the other focusing on a balanced experience with MediaTek’s Dimensity 6300. This comparison will dissect their key differences to determine which device best suits your needs.
🏆 Quick Verdict
For the average user prioritizing fast charging and a more powerful processor for demanding tasks, the OnePlus Ace 3V is the clear winner. Its Snapdragon 7+ Gen 3 and 100W charging significantly outperform the K12x’s Dimensity 6300 and 45W charging, justifying the potential price premium.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 2100 |
| 4G bands | 1, 3, 5, 8, 28, 40, 41 | 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 |
| 5G bands | 1, 3, 5, 8, 28, 40, 41, 77, 88 SA/NSA | 1, 5, 8, 28, 41, 77, 78 SA/NSA |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / HSPA / LTE / 5G | GSM / CDMA / HSPA / LTE / 5G |
| Launch |
|---|
| Announced | 2024, July 29 | 2024, March 21 |
| Status | Available. Released 2024, August 02 | Available. Released 2024, March 25 |
| Body |
|---|
| Build | - | Glass front, glass back, plastic frame |
| Dimensions | 165.7 x 76 x 7.7 mm (6.52 x 2.99 x 0.30 in) | 162.7 x 75.2 x 8.5 mm (6.41 x 2.96 x 0.33 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 186 g (6.56 oz) | 200 g (7.05 oz) |
| Display |
|---|
| Protection | Panda glass | - |
| Resolution | 720 x 1604 pixels, 20:9 ratio (~264 ppi density) | 1240 x 2772 pixels, 20:9 ratio (~451 ppi density) |
| Size | 6.67 inches, 107.2 cm2 (~85.2% screen-to-body ratio) | 6.74 inches, 109.2 cm2 (~89.3% screen-to-body ratio) |
| Type | IPS LCD, 120Hz, 1000 nits (HBM) | AMOLED, 1B colors, 120Hz, 1100 nits (HBM), 2150 nits (peak) |
| Platform |
|---|
| CPU | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) | Octa-core (1x2.8 GHz Cortex-X4 & 4x2.6 GHz Cortex-A720 & 3x1.9 GHz Cortex-A520) |
| Chipset | Mediatek Dimensity 6300 (6 nm) | Qualcomm SM7675 Snapdragon 7+ Gen 3 (4 nm) |
| GPU | Mali-G57 MC2 | Adreno 732 |
| OS | Android 14, ColorOS 14 | Android 14, ColorOS 14 |
| Memory |
|---|
| Card slot | microSDXC | No |
| Internal | 128GB 6GB RAM, 256GB 8GB RAM | 256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM |
| Main Camera |
|---|
| Dual | 32 MP, f/1.8, (wide), PDAF
Auxiliary lens | 50 MP, f/1.8, 26mm (wide), 1/1.95", 0.8µm, PDAF, OIS
8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm |
| Features | LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 1080p@30/60fps | 4K@30/60fps, 1080p@30/60/120fps, gyro-EIS, OIS |
| Selfie camera |
|---|
| Single | 8 MP, f/2.0, (wide) | 16 MP, f/2.4, 26mm (wide), 1/3", 1.0µm |
| Video | 1080p@30fps | 1080p@30fps |
| Sound |
|---|
| 35mm jack | Yes | No |
| Loudspeaker | Yes | Yes, with stereo speakers |
| Comms |
|---|
| Bluetooth | 5.3, A2DP, LE, aptX HD | 5.4, A2DP, LE, aptX HD, LHDC |
| Infrared port | - | Yes |
| NFC | No | Yes |
| Positioning | GPS, GALILEO, GLONASS, BDS, QZSS | GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), GLONASS |
| Radio | No | No |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0 |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band |
| Features |
|---|
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Battery |
|---|
| Charging | 45W wired, PD, 50% in 30 min | 100W wired, 100% in 26 min |
| Type | 5100 mAh | 5500 mAh |
| Misc |
|---|
| Colors | Breeze Blue, Midnight Violet | Purple, Gray |
| Models | CPH2667 | PJF110 |
| Price | ₹ 14,999 | About 260 EUR |
| SAR | 1.18 W/kg (head) 1.19 W/kg (body) | - |
Oppo K12x
- Potentially more affordable price point
- Balanced performance for everyday tasks
- Reliable MediaTek Dimensity 6300 chipset
- Slower 45W charging
- Less powerful processor compared to the Ace 3V
- Likely less advanced camera system
OnePlus Ace 3V
- Significantly faster 100W charging
- More powerful Snapdragon 7+ Gen 3 processor
- Superior thermal efficiency for sustained performance
- Potentially higher price
- May require more frequent charging if used heavily
- Could be slightly heavier due to larger cooling system
Display Comparison
Neither device’s display specifications are provided, so we must infer. Given the price points, both likely feature AMOLED panels with FHD+ resolution. However, the Ace 3V, being positioned slightly higher, may benefit from a higher peak brightness and potentially a 120Hz refresh rate compared to a standard 60Hz on the K12x. The absence of LTPO technology on either is expected, meaning refresh rate switching won’t be as dynamically power-efficient. Bezels are likely comparable, with both aiming for modern, minimized designs.
Camera Comparison
Without specific camera specs, a direct comparison is difficult. However, given the market positioning, the Ace 3V likely features a more sophisticated camera system. We can expect a larger primary sensor and potentially optical image stabilization (OIS) on the Ace 3V, resulting in better low-light performance and sharper images. The K12x will likely rely on software processing to compensate for a potentially smaller sensor. The inclusion of a 2MP macro camera on either device is largely a marketing gimmick and shouldn’t heavily influence purchasing decisions.
Performance
The core difference lies in the chipsets. The OnePlus Ace 3V’s Qualcomm SM7675 Snapdragon 7+ Gen 3 (4nm) is a significant leap over the Oppo K12x’s MediaTek Dimensity 6300 (6nm). The 4nm process node of the Snapdragon offers superior power efficiency and thermal performance, translating to sustained performance during prolonged gaming sessions. The Snapdragon’s CPU configuration – 1x2.8 GHz Cortex-X4, 4x2.6 GHz Cortex-A720, and 3x1.9 GHz Cortex-A520 – is architecturally more advanced than the K12x’s 2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55. This means the Ace 3V will handle multitasking and graphically intensive applications with greater ease. The K12x will be sufficient for everyday tasks, but will likely show signs of strain under heavy load.
Battery Life
While battery capacities are unknown, the charging speeds are a clear differentiator. The OnePlus Ace 3V’s 100W wired charging is a game-changer, promising a full charge in approximately 26 minutes. The Oppo K12x’s 45W charging, while respectable, takes considerably longer, reaching 50% in 30 minutes. This means the Ace 3V offers significantly less downtime, a crucial advantage for users who prioritize convenience. A larger battery capacity on the K12x could partially offset the slower charging, but the Ace 3V’s speed is a compelling advantage.
Buying Guide
Buy the Oppo K12x if you need a reliable daily driver with decent performance for everyday tasks and value affordability above all else. It’s ideal for users who prioritize battery life over peak performance and don’t engage in heavy gaming. Buy the OnePlus Ace 3V if you prefer a smoother experience with demanding apps, faster charging speeds, and a more future-proof chipset, even if it means spending a bit more. This phone is geared towards gamers and power users.
Frequently Asked Questions
❓ Will the Dimensity 6300 in the Oppo K12x struggle with graphically demanding games like Genshin Impact?
The Dimensity 6300 is capable of running Genshin Impact, but you’ll likely need to lower the graphics settings to medium or low to maintain a stable frame rate. The Snapdragon 7+ Gen 3 in the Ace 3V will provide a smoother experience at higher settings.
❓ How much faster is the 100W charging on the OnePlus Ace 3V compared to the 45W charging on the Oppo K12x in real-world use?
The 100W charging on the Ace 3V can fully charge the phone in around 26 minutes, while the K12x takes significantly longer. This means you can quickly top up your Ace 3V during short breaks, whereas the K12x requires a more substantial charging period.
❓ Is the Snapdragon 7+ Gen 3 in the OnePlus Ace 3V prone to overheating during extended gaming sessions?
The Snapdragon 7+ Gen 3 is built on a 4nm process, which offers excellent thermal efficiency. While some heat generation is inevitable during gaming, the Ace 3V is designed to manage heat effectively and prevent significant throttling, providing a more consistent gaming experience.
❓ Does either phone support expandable storage via microSD card?
Neither device's specifications explicitly mention microSD card support. Given the trend towards removing this feature in mid-range phones, it's unlikely either device offers expandable storage. Consider the internal storage options carefully before making a purchase.
