Both Xiaomi Redmi Note 9 Pro Max and Xiaomi Redmi 10X (6GB RAM + 128GB) comes with same RAM. In terms of display resolution, Xiaomi Redmi Note 9 Pro Max has better resolution of 2400 x 1080 than Xiaomi Redmi 10X (6GB RAM + 128GB) which has resolution of 2340 x 1080. Xiaomi Redmi 10X (6GB RAM + 128GB) has more internal memory than Xiaomi Redmi Note 9 Pro Max
| Name | Xiaomi Redmi Note 9 Pro Max | Xiaomi Redmi 10X (6GB RAM + 128GB) | 
| RAM | 6 GB | 6 GB | 
|---|---|---|
| Display | 6.67 in | 6.53 in | 
| Internal Memory | 64 GB | 128 GB | 
| Battery | 5020 mAh | 5020 mAh | 
| Camera | 64 MP Quad | 48 MP Quad | 
| Price | Rs. 16490 | Rs. 13999 | 
The launch Date of the first phone is March 12, 2020 . The cost of Xiaomi Redmi Note 9 Pro Max is Rs. 16490. The launch Date of the second phone is May 26, 2020. The cost of Xiaomi Redmi 10X (6GB RAM + 128GB) is Rs. 13999.
Xiaomi Redmi Note 9 Pro Max has larger screen size of 6.67 inches in comparison to Xiaomi Redmi 10X (6GB RAM + 128GB)'s 6.53 inch screen. Both the phones have IPS LCD Screen Type. Both have same 395 PPI. In terms of screen to body ratio, Xiaomi Redmi 10X (6GB RAM + 128GB) has better screen to body ratio of ~ 90.77% than Xiaomi Redmi Note 9 Pro Max's ~ 84.6%. Xiaomi Redmi Note 9 Pro Max has 20:9 aspect ratio where as Xiaomi Redmi 10X (6GB RAM + 128GB) has 19.5:9 aspect ratio.
Both mobiles come with 6 GB RAM Xiaomi Redmi 10X (6GB RAM + 128GB) has more Internal Memory (128 GB) than Xiaomi Redmi Note 9 Pro Max (64 GB).
Xiaomi Redmi Note 9 Pro Max's 64 MP Quad Rear Camera outclasses Xiaomi Redmi 10X (6GB RAM + 128GB)'s 48 MP Quad Rear Camera in terms of resolution. Xiaomi Redmi Note 9 Pro Max will be better choice if you're looking to click lot of selfies as it has better 32 MP Front Camera in comparison to Xiaomi Redmi 10X (6GB RAM + 128GB)'s 13 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 10.0 and the second one on 10 version.
| Name | Xiaomi Redmi Note 9 Pro Max | Xiaomi Redmi 10X (6GB RAM + 128GB) | 
| General | ||
| Model | Redmi Note 9 Pro Max | Redmi 10x | 
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM | 
| Dual Sim | Yes | Yes | 
| Sim Size | Nano+Nano SIM | Nano+Nano SIM | 
| Device Type | Smartphone | Smartphone | 
| Release Date | March 12, 2020 | May 26, 2020 | 
| Design | ||
| Dimensions | 76.68 x 165.5 x 8.8 mm | 77.2 x 162.3 x 8.9 mm | 
| Weight | 209 g | 199 g | 
| Display | ||
| Type | Color IPS LCD Screen (16M Colors) | Color IPS LCD Screen (16M Colors) | 
| Touch | Yes | Yes | 
| Size | 6.67 inches, 1080 x 2400 pixels | 6.53 inches, 1080 x 2340 pixels | 
| Aspect Ratio | 20:9 | 19.5:9 | 
| PPI | ~ 395 PPI | ~ 395 PPI | 
| Screen to Body Ratio | ~ 84.6% | ~ 90.77% | 
| Glass Type | Corning Gorilla Glass 5 | Corning Gorilla Glass 5 | 
| Features | Triple Corning Gorilla Glass 5, Standard Mode, Sunshine Mode, Night mode, Color Temperature Adjustment | |
| Notch | Yes, Punch Hole | Yes, Punch Hole | 
| Memory | ||
| RAM | 6 GB | 6 GB | 
| Storage | 64 GB | 128 GB | 
| Card Slot | Yes, upto 512 GB | Yes | 
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| 5G | No | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Bluetooth | Yes, v5.0, A2DP, LE | Yes, v5.0, A2DP, LE | 
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 | 
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging | 
| IR Blaster | Yes | Yes | 
| Extra | ||
| GPS | Yes, with A-GPS, Galileo, GLONASS, Beidou, NavIC Support | Yes, with A-GPS, GLONASS, BDS | 
| Fingerprint Sensor | Yes, Side | Yes, Rear | 
| Face Unlock | Yes | Yes | 
| Sensors | Ambient Light Sensor, Proximity Sensor, E Compass, Accelerometer, Gyroscope | Acceleration Sensor, Gyroscope, Ambient Light Sensor, Distance Sensor, Electronic Compass | 
| 3.5mm Headphone Jack | Yes | Yes | 
| Extra Features | UFS2.1 | |
| Camera | ||
| Rear Camera | 64 MP ƒ/1.79 (Main) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 (Depth Sensor) | 48 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 (Depth Sensor) | 
| Auto Focus | Yes | |
| Features | Night mode, AI Scene detection, Smart ultra-wide angle mode | AI Beautify | Burst mode | Tilt-shift | Level display | Custom watermark | Pro mode | AI Portrait mode, 3D Lighting, Panorama mode | HDR, Document Mode, ID photocopy Mode, Portrait Mode, Panorama Mode, Professional Mode | 
| Video Recording | 4K @ 30 fps UHD, 1080p @ 30/60 fps FHD, 720p @ 30 fps HD | 1080p @ 30 fps FHD, 720p @ 30 fps HD | 
| Flash | Yes, LED | Yes, LED | 
| Front Camera | 32 MP ƒ/2 (Main) | 13 MP ƒ/2.3 (Wide Angle) | 
| Front Video Recording | 1080p @ 30 fps FHD, 720p @ 30 fps HD | 1080p @ 30 fps FHD | 
| Technical | ||
| OS | Android v10.0, upgradable to v11 | Android v10 | 
| Chipset | Qualcomm Snapdragon 720G | MediaTek Helio G85 | 
| CPU | 2.3 GHz, Octa Core Processor | 2 GHz, Octa Core Processor | 
| Core Details | 2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver | 2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55 | 
| GPU | Adreno 618 | Mali-G52 MC2 | 
| Java | No | No | 
| Browser | Yes, supports HTML5 | Yes | 
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AMR, FLAC, APE | WAV, AAC, MP3, AMR | 
| Video | MP4, M4V, MKV, XVID | MP4, M4V, MKV, XVID | 
| FM Radio | Yes | Yes | 
| Document Reader | Yes | Yes | 
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 5020 mAh, Li-Po Battery | 5020 mAh, Li-Po Battery | 
| Fast Charging | Yes, 33W Fast Charging | Yes, 18W Fast Charging | 
| Reverse Charging | Yes, 9W Reverse Charging | |
| StandBy Time | 20 days | |
| Music Playback Time | 210 hours | |