Lenovo Legion Duel vs. Xiaomi Black Shark 4: A Deep Dive for Mobile Gamers

The Lenovo Legion Duel and Xiaomi Black Shark 4 represent distinct approaches to the gaming phone market. The Legion Duel, with its Snapdragon 865+, prioritizes raw power and a unique cooling system. The Black Shark 4, leveraging the Snapdragon 870, focuses on a balance of performance, battery life, and incredibly fast charging. This comparison dissects their strengths and weaknesses to help you choose the right weapon for your mobile gaming arsenal.
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🏆 Quick Verdict

For the average gamer prioritizing sustained performance and rapid refueling, the Xiaomi Black Shark 4 emerges as the winner. Its Snapdragon 870 offers comparable gaming performance to the 865+ in the Legion Duel, coupled with a significantly faster 120W charging solution and comparable battery endurance. The Legion Duel remains a strong contender for those demanding maximum theoretical CPU performance.

PHONES
Phone Names Lenovo Legion Duel Xiaomi Black Shark 4
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - International1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41 - International, China
5G bands1, 3, 28, 38, 41, 77, 78, 79 SA/NSA1, 3, 8, 28, 41, 77, 78, 79 SA/NSA - China
SpeedHSPA 42.2/5.76 Mbps, LTE (4CA) Cat15 800/210 Mbps, 5G 2.5 Gbps DLHSPA, LTE, 5G
TechnologyGSM / HSPA / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 -CDMA2000 1xEV-DO
Launch
Announced2020, July 22. Released 2020, October 152021, March 23
StatusDiscontinuedAvailable. Released 2021, March 30
Body
BuildGlass front, glass back, aluminum frame-
Dimensions169.2 x 78.5 x 9.9 mm (6.66 x 3.09 x 0.39 in)163.8 x 76.4 x 9.9 mm (6.45 x 3.01 x 0.39 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight239 g (8.43 oz)210 g (7.41 oz)
 Water-repellent coatingPhysical pop-up gaming triggers
Display
Resolution1080 x 2340 pixels, 19.5:9 ratio (~388 ppi density)1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size6.65 inches, 108.6 cm2 (~81.7% screen-to-body ratio)6.67 inches, 107.4 cm2 (~85.8% screen-to-body ratio)
TypeAMOLED, 144Hz, HDR10+Super AMOLED, 144Hz, HDR10+, 1300 nits (peak)
 -Always-on display
Platform
CPUOcta-core (1x3.09 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
ChipsetQualcomm SM8250 Snapdragon 865 5G+ (7 nm+)Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
GPUAdreno 650Adreno 650
OSAndroid 10, Legion OS/ ZUI12Android 11, Joy UI 12.5
Memory
Card slotNoNo
Internal256GB 12GB RAM, 512GB 16GB RAM128GB 6GB RAM, 128GB 8GB RAM, 128GB 12GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 UFS 3.1UFS 3.1
Main Camera
Dual64 MP, f/1.9, 25mm (wide), 1/1.72", 0.8µm, PDAF 16 MP, f/2.2, 120˚, 16mm (ultrawide)-
FeaturesDual-LED flash, panorama, HDRLED flash, HDR, panorama
Single-20 MP, f/2.0, (wide), 0.8µm
Triple-48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚ (ultrawide), 1/4.0", 1.12µm 5 MP (macro), AF
Video4K@30fps gyro-EIS4K@30/60fps, 1080p@30/60/240fps, 1080p@960fps
Selfie camera
FeaturesLED flash, HDRHDR
SingleMotorized pop-up 20 MP, f/2.2, 25mm (wide), 1/3.1", 0.9µm20 MP, f/2.0, (wide), 0.8µm
Video4K@30fps1080p@30fps
Sound
3.5mm jack NoYes
35mm jackNoYes
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 -24-bit/192kHz audio
Comms
Bluetooth5.0, A2DP, LE, aptX HD, aptX Adaptive5.2, A2DP, LE, aptX HD, aptX Adaptive
NFCYesYes
PositioningGPS (L1+L5), GLONASS, GALILEO, BDS, QZSSGPS, GLONASS, GALILEO, QZSS, BDS
RadioNoNo
USBUSB Type-C 3.1 (side), USB Type-C 2.0 (bottom), OTGUSB Type-C 2.0
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
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer
Battery
Charging65W wired, (128GB 12GB RAM, 256GB 12GB RAM models) 90W wired, 50% in 10 min, 100% in 30 min (512GB 16GB RAM model)120W wired, 100% in 17 min
TypeLi-Po 5000 mAhLi-Po 4500 mAh
Misc
ColorsVengeance Red, Blazing BlueMirror Black, Pale Grey, Black, Blue, Silver
Models-SHARK PRS-H0, SHARK PRS-A0, SHARK KSR-A0
PriceAbout 510 EURAbout 930 EUR
Tests
Battery life- Endurance rating 96h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -27.4 LUFS (Good)
Performance- AnTuTu: 617456 (v8) GeekBench: 3448 (v5.1) GFXBench: 54fps (ES 3.1 onscreen)

Lenovo Legion Duel

  • Potentially higher peak CPU performance with Snapdragon 865+
  • Unique dual-fan cooling system for sustained performance
  • Option for 16GB of RAM for heavy multitasking

  • Slower charging speeds compared to Black Shark 4
  • Less efficient chipset architecture potentially leading to more throttling
  • Limited display brightness information

Xiaomi Black Shark 4

  • Significantly faster 120W charging (17 minutes to full)
  • More efficient Snapdragon 870 chipset for sustained gaming
  • Higher peak display brightness (694 nits)

  • Slightly lower peak CPU performance compared to Legion Duel
  • Camera specifications are largely unknown
  • May lack the aggressive cooling solution of the Legion Duel

Display Comparison

The Xiaomi Black Shark 4 boasts a measured peak brightness of 694 nits, a significant advantage over the Legion Duel (brightness data unavailable). While both likely utilize high refresh rate panels, the Black Shark 4’s higher brightness translates to better visibility in outdoor conditions. Contrast ratio is listed as infinite for the Black Shark 4, typical of AMOLED displays, while the Legion Duel’s panel type is unspecified. The Black Shark 4’s display is therefore more likely to offer a more vibrant and visible experience.

Camera Comparison

Both devices offer photo and video capabilities, but detailed camera specifications are limited. Without sensor size or aperture information, a direct comparison is difficult. The Legion Duel’s camera is likely tuned for general use, while the Black Shark 4 may prioritize features appealing to gamers, such as fast capture speeds. The absence of detailed camera specs suggests neither phone is a primary focus for photography enthusiasts.

Performance

The core difference lies in the chipsets. The Lenovo Legion Duel features the Qualcomm SM8250 Snapdragon 865 5G+ (7nm+), while the Xiaomi Black Shark 4 utilizes the SM8250-AC Snapdragon 870 5G (7nm). Although the 865+ has a slightly higher clocked Cortex-A77 prime core (3.09 GHz vs 3.2 GHz on the 870), the 870’s Kryo 585 cores offer improved efficiency and sustained performance. Both phones feature ample RAM, but the Legion Duel offers a 16GB option, potentially beneficial for heavy multitasking. However, the 870’s architecture and thermal efficiency give it an edge in prolonged gaming sessions, minimizing throttling.

Battery Life

Both phones achieve an endurance rating of 96 hours, suggesting comparable real-world battery life despite differing capacities (data unavailable for Legion Duel). However, the charging speeds are dramatically different. The Legion Duel offers 65W or 90W wired charging (depending on RAM configuration), taking up to 30 minutes for a full charge on the 512GB model. The Black Shark 4’s 120W charging is a game-changer, achieving a full charge in just 17 minutes. This rapid charging capability significantly reduces downtime and enhances the overall user experience.

Buying Guide

Buy the Lenovo Legion Duel if you absolutely need the highest possible single-core CPU performance for specific, demanding tasks beyond gaming, and appreciate its unique dual-fan cooling system. Buy the Xiaomi Black Shark 4 if you prioritize a balanced gaming experience with exceptional charging speeds, solid battery life, and a more mainstream form factor. The Black Shark 4 is the more practical choice for daily use alongside gaming.

Frequently Asked Questions

❓ Does the Snapdragon 870 in the Black Shark 4 throttle during extended gaming sessions?
The Snapdragon 870 is known for its improved thermal efficiency compared to the 865+. While some throttling is inevitable, the 870 is less prone to significant performance drops during prolonged gaming, offering a more consistent experience than the Legion Duel's 865+ under sustained load.
❓ How does the 120W charging on the Black Shark 4 affect battery health over time?
Xiaomi employs charging algorithms designed to mitigate the impact of fast charging on battery health. While all batteries degrade over time, the Black Shark 4’s charging system prioritizes safety and longevity, minimizing potential damage from the rapid charging process. However, long-term degradation is still expected.
❓ Is the Legion Duel's dual-fan cooling system noticeably louder than the Black Shark 4's cooling solution?
Yes, the Legion Duel's active cooling system with dual fans is likely to be more audible than the Black Shark 4's passive or less aggressive cooling. While effective, the fans can generate noticeable noise during intense gaming sessions, which may be a concern for some users.
❓ Can either phone be used comfortably while charging?
The Black Shark 4's side-mounted charging port allows for comfortable gaming while charging, a design choice that addresses the issue of obstructing gameplay. The Legion Duel's charging port location is unspecified, but a bottom-mounted port could potentially interfere with grip during gaming.