OnePlus Ace 3 vs Xiaomi 14T Pro: A Deep Dive into Flagship Performance and Value

The OnePlus Ace 3 and Xiaomi 14T Pro represent compelling options in the increasingly competitive flagship space. The Ace 3 leverages the proven Snapdragon 8 Gen 2, while the 14T Pro debuts with the cutting-edge MediaTek Dimensity 9300+. This comparison dissects their key differences to determine which device delivers the best overall experience.
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🏆 Quick Verdict

For most users, the Xiaomi 14T Pro emerges as the stronger contender. Its Dimensity 9300+ chipset offers a performance edge, coupled with significantly faster 120W wired and 50W wireless charging. While the Ace 3 remains a capable device, the 14T Pro’s superior charging and processing power justify its position.

PHONES
Phone Names OnePlus Ace 3 Xiaomi 14T Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 3, 4, 5, 8, 18, 19, 26, 28, 34, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66
5G bands1, 3, 5, 8, 28, 41, 77, 78 SA/NSA1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 75, 77, 78 SA/NSA
SpeedHSPA, LTE, 5GHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
Launch
Announced2024, January 042024, September 26
StatusAvailable. Released 2024, January 15Available. Released 2024, September 26
Body
BuildGlass front (Gorilla Glass Victus 2), glass back, aluminum frameGlass front (Gorilla Glass 5), aluminum frame, glass back (Panda X)
Dimensions163.3 x 75.3 x 8.8 mm (6.43 x 2.96 x 0.35 in)160.4 x 75.1 x 8.4 mm (6.31 x 2.96 x 0.33 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· eSIM + eSIM· Nano-SIM + Nano-SIM
Weight207 g (7.30 oz)209 g (7.37 oz)
Display
ProtectionCorning Gorilla Glass Victus 2Corning Gorilla Glass 5
Resolution1264 x 2780 pixels (~450 ppi density)1220 x 2712 pixels, 20:9 ratio (~446 ppi density)
Size6.78 inches, 111.7 cm2 (~90.9% screen-to-body ratio)6.67 inches, 107.4 cm2 (~89.1% screen-to-body ratio)
TypeLTPO AMOLED, 1B colors, 120Hz, HDR10+, Dolby Vision, 1600 nits (HBM), 4500 nits (peak)AMOLED, 68B colors, 144Hz, 3840Hz PWM, Dolby Vision, HDR10+, 1600 nits (HBM), 4000 nits (peak)
Platform
CPUOcta-core (1x3.2 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)Octa-core (1x3.4 GHz Cortex-X4 & 3x2.85 GHz Cortex-X4 & 4x2.0 GHz Cortex-A720)
ChipsetQualcomm SM8550-AB Snapdragon 8 Gen 2 (4 nm)Mediatek Dimensity 9300+ (4 nm)
GPUAdreno 740Immortalis-G720 MC12
OSAndroid 14, ColorOS 14Android 14, HyperOS
Memory
Card slotNoNo
Internal256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 12GB RAM
Main Camera
FeaturesColor spectrum sensor, LED flash, HDR, panoramaLeica lens, Ultra HDR, LED flash, HDR, panorama
Triple50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 16mm, 112˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro)50 MP, f/1.6, 23mm (wide), 1/1.31", 1.2µm, PDAF, OIS 50 MP, f/2.0, 60mm (telephoto), 1/2.88", 0.61µm, PDAF, 2.6x optical zoom 12 MP, f/2.2, 15mm (ultrawide), 1/3.06", 1.12µm
Video4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS, OIS8K@24/30fps, 4K@24/30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS, 10-bit Rec. 2020, HDR10+
Selfie camera
FeaturesHDRHDR
Single16 MP, f/2.4, 26mm (wide), 1/3", 1.0µm32 MP, f/2.0, 25mm (wide), 1/3.44", 0.64µm
Video1080p@30fps4K@30fps, 1080p@30/60fps, HDR10+
Sound
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
Comms
Bluetooth5.3, A2DP, LE, aptX HD5.4, A2DP, LE, LHDC
Infrared portYesYes
NFCYesYes (market/region dependent)
PositioningGPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5)GPS (L1+L5), BDS (B1I+B1C+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavIC (L5), GLONASS
RadioNoNo
USBUSB Type-C 2.0USB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6/7, dual-bandWi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Battery
Charging100W wired, 100% in 27 min120W wired, PD3.0, QC4, 100% in 19 min 50W wireless, 100% in 45 min
Type5500 mAhLi-Po 5000 mAh
Misc
ColorsBlack, Blue, Rose GoldTitan Gray, Titan Blue, Titan Black
ModelsPJE1102407FPN8EG
PriceAbout 340 EUR$ 550.00 / £ 498.00 / € 539.99
SAR EU-0.99 W/kg (head)     1.00 W/kg (body)

OnePlus Ace 3

  • Proven Snapdragon 8 Gen 2 performance
  • Potentially more refined software experience
  • Sleek and understated design

  • Slower charging speeds (100W wired only)
  • Lacks wireless charging
  • Potentially less powerful CPU compared to Dimensity 9300+

Xiaomi 14T Pro

  • Cutting-edge Dimensity 9300+ chipset
  • Ultra-fast 120W wired and 50W wireless charging
  • Brighter display for outdoor visibility

  • MIUI software may not appeal to all users
  • Potential for software bloat
  • Thermal management needs to be verified under sustained load

Display Comparison

The Xiaomi 14T Pro boasts a brighter display, reaching a measured peak of 1228 nits, compared to an unspecified peak brightness for the Ace 3. This translates to better visibility under direct sunlight. While both utilize 4nm chipsets, display technology details beyond brightness are missing for the Ace 3. The 14T Pro’s higher brightness is a clear advantage for outdoor users and media consumption. We expect both to have high refresh rate panels, but the 14T Pro’s brightness gives it an edge.

Camera Comparison

Without detailed camera specifications for either device, a direct comparison is limited. However, the market positioning suggests the Xiaomi 14T Pro may prioritize camera capabilities. Xiaomi often focuses heavily on camera technology, and the Dimensity 9300+’s ISP capabilities could contribute to improved image processing. The Ace 3 is likely to offer a solid camera experience, but the 14T Pro has the potential to excel in this area, assuming it incorporates a high-resolution sensor and advanced features.

Performance

The core difference lies in the chipsets: Qualcomm’s Snapdragon 8 Gen 2 in the Ace 3 versus MediaTek’s Dimensity 9300+ in the 14T Pro. The Dimensity 9300+ features a unique CPU configuration with a 1x3.4 GHz Cortex-X4 prime core and three additional Cortex-X4 cores, potentially offering superior multi-core performance compared to the Ace 3’s 1x3.2 GHz Cortex-X3 and two Cortex-A715 cores. The 14T Pro’s CPU architecture suggests a performance advantage in demanding tasks and sustained workloads. Both phones utilize a 4nm process, but the newer architecture of the Dimensity 9300+ is likely to be more efficient.

Battery Life

The Xiaomi 14T Pro shines in charging speed, supporting 120W wired charging, achieving a full charge in just 19 minutes. It also includes 50W wireless charging, taking 45 minutes to fully charge. The OnePlus Ace 3 offers 100W wired charging, taking 27 minutes for a full charge, and lacks wireless charging. While the 14T Pro’s battery capacity isn’t specified, its active use score of 12:32h suggests excellent battery life. The faster charging speeds of the 14T Pro are a significant convenience factor, especially for power users.

Buying Guide

Buy the OnePlus Ace 3 if you prioritize a well-established software experience and a slightly more conservative, refined design. It’s ideal for users who value stability and a proven track record. Buy the Xiaomi 14T Pro if you demand the absolute latest in processing power, blazing-fast charging speeds, and are comfortable with Xiaomi’s MIUI software, which offers extensive customization options.

Frequently Asked Questions

❓ Does the Dimensity 9300+ in the Xiaomi 14T Pro suffer from overheating under heavy gaming loads?
While the Dimensity 9300+ is a powerful chipset, sustained performance and thermal management are crucial. Early reports suggest MediaTek has made significant improvements in thermal efficiency with this generation. However, real-world testing is needed to confirm its performance during extended gaming sessions. The 14T Pro’s cooling system will be a key factor in preventing throttling.
❓ Is the 100W charging on the OnePlus Ace 3 fast enough for most users, or is the 120W on the Xiaomi 14T Pro a necessity?
100W charging is still exceptionally fast, topping up the Ace 3 in 27 minutes. However, the 120W charging on the 14T Pro shaves off 8 minutes, offering a noticeable convenience boost. For users who frequently run out of battery and need a quick top-up, the 120W charging is a significant advantage.
❓ How does the software experience differ between OxygenOS on the OnePlus Ace 3 and MIUI on the Xiaomi 14T Pro?
OxygenOS is known for its clean, near-stock Android experience with subtle customizations. MIUI, on the other hand, is heavily customized with a wide range of features and themes. Some users prefer MIUI’s extensive customization options, while others find it bloated and prefer OxygenOS’s simplicity. This is largely a matter of personal preference.