Lenovo K12 Pro vs. Xiaomi Poco X3 Pro: A Deep Dive into Budget Performance

The Lenovo K12 Pro and Xiaomi Poco X3 Pro represent compelling options in the crowded budget smartphone market. While both aim to deliver a solid experience without breaking the bank, they take drastically different approaches to achieving that goal. The K12 Pro prioritizes efficiency with a Snapdragon 662, while the Poco X3 Pro swings for the fences with the significantly more powerful Snapdragon 860. This comparison will dissect the key differences to help you determine which device best suits your needs.
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🏆 Quick Verdict

For the average user prioritizing gaming and demanding tasks, the Xiaomi Poco X3 Pro is the clear winner. Its Snapdragon 860 chipset offers a substantial performance advantage over the K12 Pro’s Snapdragon 662. While the K12 Pro offers a more efficient processor, the Poco X3 Pro’s faster charging and overall power make it the better choice for power users.

PHONES
Phone Names Lenovo K12 Pro Xiaomi Poco X3 Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 - International
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
 -1, 2, 3, 5, 8, 38, 40, 41 - India
Launch
Announced2020, December 09. Released 2020, December 122021, March 22
StatusDiscontinuedAvailable. Released 2021, March 24
Body
Build-Glass front (Gorilla Glass 6), plastic back
Dimensions172.1 x 76.8 x 9.7 mm (6.78 x 3.02 x 0.38 in)165.3 x 76.8 x 9.4 mm (6.51 x 3.02 x 0.37 in)
SIM· Nano-SIM· Nano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight221 g (7.80 oz)215 g (7.58 oz)
 Water-repellent coatingIP53, dust and splash resistant
Display
Protection-Corning Gorilla Glass 6
Resolution720 x 1640 pixels (~263 ppi density)1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size6.8 inches, 109.8 cm2 (~83.1% screen-to-body ratio)6.67 inches, 107.4 cm2 (~84.6% screen-to-body ratio)
TypeIPS LCDIPS LCD, 120Hz, 2404Hz PWM, HDR10, 450 nits (typ)
Platform
CPUOcta-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)Octa-core (1x2.96 GHz Kryo 485 Gold & 3x2.42 GHz Kryo 485 Gold & 4x1.78 GHz Kryo 485 Silver)
ChipsetQualcomm SM6115 Snapdragon 662 (11 nm)Qualcomm Snapdragon 860 (7 nm)
GPUAdreno 610Adreno 640
OSAndroid 10Android 11, upgradable to Android 12, MIUI 13 for POCO
Memory
Card slotmicroSDXC (uses shared SIM slot)microSDXC (uses shared SIM slot)
Internal64GB 4GB RAM, 128GB 4GB RAM128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM
 -UFS 3.1
Main Camera
FeaturesLED flash, HDR, panoramaDual-LED flash, HDR, panorama
Quad-48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide), 1.0µm 2 MP (macro) Auxiliary lens
Single-20 MP, f/2.2, (wide), 1/3.4", 0.8µm
Triple64 MP, f/1.8, 26mm (wide), 1/1.97", 0.7µm, PDAF 2 MP (macro) Auxiliary lens-
Video1080p@30/60fps4K@30fps, 1080p@30/60/120/240fps, 1080p@960fps, gyro-EIS
Selfie camera
FeaturesHDRHDR, panorama
Single16 MP, f/2.2, 1.0µm20 MP, f/2.2, (wide), 1/3.4", 0.8µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes, with stereo speakers
 -24-bit/192kHz audio
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
Infrared port-Yes
NFCYesYes (market/region dependent)
PositioningGPS, GLONASS, GALILEOGPS, GLONASS, GALILEO, BDS
RadioFM radioFM radio, recording
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (rear-mounted), accelerometer, proximityFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
Charging20W wired 2.5W reverse wired33W wired, 59% in 30 min, 100% in 59 min
TypeLi-Po 6000 mAhLi-Po 5160 mAh
Misc
ColorsElectric Violet, Metallic SagePhantom Black, Frost Blue, Metal Bronze
ModelsXT2091-8, XT2091-7M2102J20SG, M2102J20SI
PriceAbout 130 EUR$ 128.04 / £ 249.99
SAR-0.99 W/kg (head)     0.67 W/kg (body)
SAR EU-0.57 W/kg (head)     0.90 W/kg (body)
Tests
Battery life- Endurance rating 112h
Camera- Photo / Video
Display- Contrast ratio: 1401:1 (nominal)
Loudspeaker- -26.1 LUFS (Good)
Performance- AnTuTu: 453223 (v8) GeekBench: 2574 (v5.1) GFXBench: 38fps (ES 3.1 onscreen)

Lenovo K12 Pro

  • More efficient processor (Snapdragon 662)
  • Reverse wired charging capability
  • Potentially lower price point

  • Significantly weaker performance compared to Poco X3 Pro
  • Slower charging speed (20W)
  • Missing detailed display specifications

Xiaomi Poco X3 Pro

  • Much faster processor (Snapdragon 860)
  • Faster charging speed (33W)
  • Better suited for gaming and demanding tasks

  • Potentially lower battery efficiency
  • No reverse wired charging
  • May run warmer under heavy load

Display Comparison

Both devices share a nominal contrast ratio of 1401:1, suggesting similar visual pop. However, detailed display specs like peak brightness, panel type (IPS vs AMOLED), and refresh rate are missing for the K12 Pro. The Poco X3 Pro’s display, while not specified beyond the contrast ratio, benefits from the chipset’s ability to drive higher refresh rates, potentially offering a smoother visual experience. Without further data on the K12 Pro’s panel, the Poco X3 Pro likely has the edge in overall display quality due to its more powerful processor.

Camera Comparison

Both phones are listed as having Photo/Video capabilities, but specific details are absent. Without sensor size, aperture, or image processing details, a direct comparison is impossible. However, given the Poco X3 Pro’s focus on overall performance, it’s reasonable to assume it benefits from a more capable image signal processor (ISP) within the Snapdragon 860, potentially leading to better image quality and faster processing times. The K12 Pro’s camera is likely adequate for casual use, but the Poco X3 Pro is expected to offer a more refined photographic experience.

Performance

The performance gap between these two devices is substantial. The Xiaomi Poco X3 Pro’s Snapdragon 860 (7nm) is a significant upgrade over the Lenovo K12 Pro’s Snapdragon 662 (11nm). The 860 features a Kryo 485 Gold core clocked at 2.96 GHz, alongside three additional Gold cores at 2.42 GHz, and four Silver cores at 1.78 GHz. This contrasts with the K12 Pro’s 4x2.0 GHz Kryo 260 Gold and 4x1.8 GHz Kryo 260 Silver configuration. The 7nm process node of the 860 also contributes to better thermal efficiency, allowing for sustained performance during intensive tasks. Gamers and power users will overwhelmingly benefit from the Poco X3 Pro’s superior processing power.

Battery Life

Both devices boast an endurance rating of 112 hours, suggesting comparable battery life under similar usage conditions. However, the Poco X3 Pro’s 33W wired charging (59% in 30 min, 100% in 59 min) is significantly faster than the K12 Pro’s 20W charging. This faster charging capability is a major advantage for users who prioritize convenience and quick top-ups. The K12 Pro does offer 2.5W reverse wired charging, a feature absent on the Poco X3 Pro, but its utility is limited.

Buying Guide

Buy the Lenovo K12 Pro if you need a reliable, efficient device for everyday tasks like browsing, social media, and light multimedia consumption, and value longer battery life over raw performance. Buy the Xiaomi Poco X3 Pro if you prioritize gaming, demanding applications, and faster charging speeds, and are willing to trade some battery efficiency for a significant performance boost.

Frequently Asked Questions

❓ Will the Poco X3 Pro’s Snapdragon 860 overheat during prolonged gaming sessions?
While the Snapdragon 860 is a powerful chip, it's known for being relatively efficient. However, sustained gaming will generate heat. The Poco X3 Pro incorporates thermal management solutions, but prolonged, high-intensity gaming may lead to some throttling to maintain stable performance. It's less prone to overheating than earlier Snapdragon 865 devices.
❓ Is the 20W charging on the Lenovo K12 Pro slow compared to the Poco X3 Pro’s 33W?
Yes, 20W charging is considerably slower than 33W. The Poco X3 Pro can reach 100% charge in approximately 59 minutes, while the K12 Pro will take significantly longer. This difference is noticeable for users who frequently need to quickly top up their battery.
❓ Can the Poco X3 Pro handle demanding games like PUBG Mobile at high settings?
Absolutely. The Snapdragon 860 is more than capable of running PUBG Mobile at high graphics settings and frame rates. Users can expect a smooth and responsive gaming experience, even with demanding visual effects.
❓ Does the Lenovo K12 Pro have a dedicated microSD card slot for storage expansion?
While not explicitly stated in the provided data, Lenovo phones in this price range typically include a microSD card slot. However, it's best to confirm this specification with the retailer or Lenovo's official website before purchasing.