| Vivo X51 5G | Vivo X90 Pro | |
| Specifications | ||
| Brand | Vivo | Vivo | 
| Model | - | - | 
| Release Date | October 2020 | December 2022 | 
| Operating System | Android 10 | Android 13 | 
| Dimensions | ||
| Size | 158.5 x 72.8 x 8.0 mm 6.24 x 2.87 x 0.31 in  | 
                    
                    164.1 x 74.5 x 9.3 mm 6.46 x 2.93 x 0.37 in  | 
                    
                
| Weight | 182 g 6.40 oz  | 
                    
                    215 g 7.58 oz  | 
                    
                
| Screen | ||
| Size | 6.56 inches | 6.78 inches | 
| Resolution | 1,080 x 2,376 pixels | 1,260 x 2,800 pixels | 
| PPI | 398 | 453 | 
| Features | OLED, 90Hz | OLED, 120Hz | 
| Cameras | ||
| Rear | Quad camera 48 MP f/1.6 Wide 8 MP f/2.2 Ultra Wide 13 MP f/2.5 Telephoto 8 MP f/3.4 Periscope Telephoto  | 
                    
                    Triple camera 50 MP f/1.8 Wide 12 MP f/2.0 Ultra Wide 50 MP f/1.6 Telephoto  | 
                    
                
| Front | 32 MP f/2.5 Wide | 32 MP f/2.5 Wide | 
| Storage | ||
| Memory | 8 GB | 8 GB 12 GB  | 
                    
                
| Fixed | 256 GB | 256 GB 512 GB  | 
                    
                
| Removable | - | - | 
| Processor | ||
| Chip | Qualcomm Snapdragon 765G 5G SM7250 Octa-core processor 7 nm  | 
                    
                    MediaTek Dimensity 9200 Octa-core processor 4 nm  | 
                    
                
| CPU | 1x 2.40 GHz Kryo 475 Prime 1x 2.20 GHz Kryo 475 Gold 6x 1.80 GHz Kryo 475 Silver  | 
                    
                    1x 3.05 GHz Cortex-X3 3x 2.85 GHz Cortex-A715 4x 1.80 GHz Cortex-A510  | 
                    
                
| GPU | Adreno 620 | Immortalis-G715 MC11 | 
| Battery | ||
| Capacity | 4,315 mAh | 4,870 mAh | 
| Features | Fast charging 33W | Fast charging 120W | 
| Removable | ||
| Connectivity | ||
| 5G | ||
| NFC | ||
| 3.5 mm Audio Jack | ||
| Micro USB | ||
| USB Type-C | ||
| Lightning | ||