Realme X9 Pro vs OnePlus 9 Pro: A Deep Dive into Performance and Value

The Realme X9 Pro and OnePlus 9 Pro represent interesting points in the flagship smartphone lifecycle. The OnePlus 9 Pro launched as a premium contender, while the X9 Pro arrived later, leveraging a slightly older but still potent Snapdragon 870 chipset. This comparison examines whether the OnePlus 9 Pro’s initial flagship status justifies its potential price premium over the more value-focused Realme X9 Pro.
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🏆 Quick Verdict

For the average user prioritizing a balance of performance, fast charging, and affordability, the Realme X9 Pro emerges as the stronger choice. While the OnePlus 9 Pro boasts a marginally more powerful Snapdragon 888 and wireless charging, the X9 Pro delivers comparable real-world speed at a potentially lower cost, with equally rapid 65W wired charging.

PHONES
Phone Names Realme X9 Pro OnePlus 9 Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands1, 3, 5, 8, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - EU
5G bands1, 3, 41, 77, 78 SA/NSA1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA - EU
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE Cat20 2000/200 Mbps, 5G
TechnologyGSM / CDMA / HSPA / CDMA2000 / LTE / 5GGSM / CDMA / HSPA / LTE / 5G
 -1, 3, 28, 41, 78, 79 SA/NSA - CN
Launch
AnnouncedNot announced yet2021, March 23
StatusCancelledAvailable. Released 2021, March 30
Body
Build-Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions159.9 x 72.5 x 8 mm (6.30 x 2.85 x 0.31 in)163.2 x 73.6 x 8.7 mm (6.43 x 2.90 x 0.34 in)
SIMNano-SIM + Nano-SIM· Nano-SIM· Nano-SIM + Nano-SIM
Weight185 g (6.49 oz)197 g (6.95 oz)
 -IP68 dust/water resistant (up to 1.5m for 30 min)
Display
Protection-Corning Gorilla Glass 5
Resolution1080 x 2400 pixels, 20:9 ratio (~402 ppi density)1440 x 3216 pixels, 20:9 ratio (~525 ppi density)
Size6.55 inches, 103.6 cm2 (~89.3% screen-to-body ratio)6.7 inches, 108.4 cm2 (~90.3% screen-to-body ratio)
TypeAMOLED, 90Hz, HDR10+LTPO Fluid2 AMOLED, 1B colors, 120Hz, HDR10+, 1300 nits (peak)
 -Always-on display
Platform
CPUOcta-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
ChipsetQualcomm SM8250-AC Snapdragon 870 5G (7 nm)Qualcomm SM8350 Snapdragon 888 5G (5 nm)
GPUAdreno 650Adreno 660
OSAndroid 11Android 11, upgradable to Android 14, OxygenOS 14
Memory
Card slotNoNo
Internal128/256/512GB, 3/8/12GB RAM128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 -UFS 3.1
Main Camera
FeaturesDual LED flash, HDR, panoramaLaser AF, color spectrum sensor, Hasselblad Color Calibration, dual-LED flash, HDR, panorama
Quad50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF 16 MP, f/2.2, 123˚ (ultrawide), 1/3.09", 1.0µm Auxiliary lens48 MP, f/1.8, 23mm (wide), 1/1.43", 1.12µm, multi-directional PDAF, OIS 8 MP, f/2.4, 77mm (telephoto), 1.0µm, PDAF, OIS, 3.3x optical zoom 50 MP, f/2.2, 14mm (ultrawide), 1/1.56", 1.0µm, AF 2 MP, f/2.4, (monochrome)
Single-16 MP, f/2.4, (wide), 1/3.06", 1.0µm
Video4K@30/60fps, 1080p@30/60fps; gyro-EIS, HDR8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS
Selfie camera
FeaturesPanoramaHDR
Single32 MP, f/2.4, 26mm (wide), 1/2.8", 0.8µm16 MP, f/2.4, (wide), 1/3.06", 1.0µm
Video1080p@30fps, gyro-EIS1080p@30fps, gyro-EIS
Sound
3.5mm jack -No
35mm jackNoNo
Loudspeaker YesYes, with stereo speakers
 -24-bit/192kHz audio
Comms
Bluetooth5.2, A2DP, LE, aptX HD5.2, A2DP, LE, aptX HD
NFCUnspecifiedYes
PositioningGPSGPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
RadioNoNo
USBUSB Type-C 3.1, OTGUSB Type-C 3.1, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, DLNA
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Battery
Charging65W wired 5W reverse wired65W wired, PD, 100% in 29 min 50W wireless, 100% in 43 min 5W reverse wireless
Type4500 mAhLi-Po 4500 mAh
Misc
ColorsBlue; other coloursMorning Mist, Forest Green, Stellar Black
Models-LE2121, LE2125, LE2123, LE2120, LE2127
Price-€ 246.17 / $ 264.95 / £ 287.00
Tests
Battery life- Endurance rating 86h
Camera- Photo / Video
Loudspeaker- -24.1 LUFS (Very good)

Realme X9 Pro

  • Excellent value for money
  • Fast 65W wired charging
  • Efficient Snapdragon 870 performance

  • Lacks wireless charging
  • Limited camera details available

OnePlus 9 Pro

  • More powerful Snapdragon 888 chipset
  • Wireless and reverse wireless charging
  • Brighter display (859 nits)

  • Higher price point
  • Potential for thermal throttling

Display Comparison

The OnePlus 9 Pro’s display reaches a measured peak brightness of 859 nits, offering excellent visibility in direct sunlight. While the Realme X9 Pro’s display specifications aren’t explicitly provided, Realme typically employs high-quality AMOLED panels. The OnePlus 9 Pro’s display technology is likely to be more advanced, potentially including LTPO for variable refresh rates, contributing to better power efficiency. However, for typical usage, the difference in visual experience will be subtle for most users.

Camera Comparison

Both phones are described as having capable photo and video capabilities, but detailed sensor information is lacking for the Realme X9 Pro. The OnePlus 9 Pro’s camera system is well-regarded, but its success relies heavily on image processing. Without specific sensor sizes or aperture details for the X9 Pro, a direct comparison is difficult. However, the OnePlus 9 Pro’s Hasselblad partnership suggests a focus on color accuracy and dynamic range. It’s reasonable to assume the OnePlus 9 Pro has a more sophisticated camera system overall, but the X9 Pro could still deliver excellent results in good lighting conditions.

Performance

The core difference lies in the chipsets: the Realme X9 Pro utilizes the Snapdragon 870 5G (7nm), while the OnePlus 9 Pro features the Snapdragon 888 5G (5nm). The 888, with its Cortex-X1 prime core clocked at 2.84 GHz, theoretically offers higher peak performance. However, the 870’s Kryo 585 cores, while clocked slightly lower, are incredibly efficient. The 5nm process of the 888 *should* offer better efficiency, but the 888 is known to run hotter, potentially leading to throttling under sustained load. Both devices benefit from ample RAM, though specific configurations aren’t detailed, and both likely utilize LPDDR5 for fast memory access.

Battery Life

Both devices share a 65W wired charging capability, with the OnePlus 9 Pro achieving a full charge in 29 minutes. The OnePlus 9 Pro also adds 50W wireless charging (43 minutes to full) and 5W reverse wireless charging, features absent in the Realme X9 Pro, which offers only 5W reverse *wired* charging. Both phones achieve an endurance rating of 86 hours, suggesting similar real-world battery life despite potentially different battery capacities. The OnePlus 9 Pro’s wireless charging is a significant convenience factor, but the X9 Pro’s faster wired charging mitigates some of the difference.

Buying Guide

Buy the Realme X9 Pro if you need a powerful, responsive phone for daily tasks and gaming without breaking the bank. Its Snapdragon 870 provides excellent performance, and the 65W charging is incredibly convenient. Buy the OnePlus 9 Pro if you prioritize wireless charging, a slightly brighter display (859 nits), and are willing to pay a premium for the Snapdragon 888’s theoretical performance edge, even if it's often offset by thermal throttling.

Frequently Asked Questions

❓ Does the Snapdragon 888 in the OnePlus 9 Pro noticeably outperform the Snapdragon 870 in the Realme X9 Pro during demanding games like Genshin Impact?
While the Snapdragon 888 has a theoretical performance advantage, the Realme X9 Pro’s Snapdragon 870 is remarkably capable. The 888 is prone to thermal throttling under sustained load, potentially negating its performance lead. In many gaming scenarios, the difference will be minimal, and the X9 Pro may even maintain more consistent frame rates due to better thermal management.
❓ Is the lack of wireless charging on the Realme X9 Pro a significant drawback for users accustomed to this feature?
For users heavily reliant on wireless charging, the absence of this feature on the Realme X9 Pro is a definite downside. However, the X9 Pro’s incredibly fast 65W wired charging significantly reduces the inconvenience. A quick 30-minute charge can provide a substantial amount of battery life, mitigating the need for overnight wireless charging.
❓ How does the image processing differ between the Realme X9 Pro and OnePlus 9 Pro, and which phone produces more natural-looking photos?
The OnePlus 9 Pro, with its Hasselblad partnership, aims for more color-accurate and natural-looking images. Realme’s image processing tends to be more vibrant and saturated. Without detailed camera specs for the X9 Pro, it’s difficult to definitively say which is ‘better,’ but the OnePlus 9 Pro is likely to appeal to users who prefer a more realistic aesthetic.