Asus ROG Phone 3 (12GB RAM + 512GB) has better RAM than Oppo K13 (8GB RAM + 256GB). In terms of display resolution, Oppo K13 (8GB RAM + 256GB) has better resolution of 2400 x 1080 than Asus ROG Phone 3 (12GB RAM + 512GB) which has resolution of 1080 x 2340. Asus ROG Phone 3 (12GB RAM + 512GB) has more internal memory than Oppo K13 (8GB RAM + 256GB)
| Name | Asus ROG Phone 3 (12GB RAM + 512GB) | Oppo K13 (8GB RAM + 256GB) | 
| RAM | 12 GB | 8 GB | 
|---|---|---|
| Display | 6.59 in | 6.67 in | 
| Internal Memory | 512 GB | 256 GB | 
| Battery | 6000 mAh | 7000 mAh | 
| Camera | 64 MP + 13 MP + 5 MP Triple | 50 MP + 2 MP Dual | 
| Price | Rs. 59999 | Rs. 19375 | 
The launch Date of the first phone is July 22, 2020. The cost of Asus ROG Phone 3 (12GB RAM + 512GB) is Rs. 59999. The launch Date of the second phone is April 21, 2025. The cost of Oppo K13 (8GB RAM + 256GB) is Rs. 19375.
Oppo K13 (8GB RAM + 256GB) has larger screen size of 6.67 inches in comparison to Asus ROG Phone 3 (12GB RAM + 512GB)'s 6.59 inch screen. Both the phones have AMOLED Screen Type. OPPO's phone has display density of 395 PPI & Asus's phone has only 391 PPI display density. In terms of screen to body ratio, OPPO's phone has better screen to body ratio of ~ 86.5% than Asus's phone ~ 79.9%. Asus ROG Phone 3 (12GB RAM + 512GB) has 19.5:9 aspect ratio where as Oppo K13 (8GB RAM + 256GB) has 20:9 aspect ratio.
Asus ROG Phone 3 (12GB RAM + 512GB)'s larger 12 GB RAM is better for playing games and all with respect to Oppo K13 (8GB RAM + 256GB)'s lower 8 GB RAM. Asus ROG Phone 3 (12GB RAM + 512GB) has more Internal Memory (512 GB) than Oppo K13 (8GB RAM + 256GB) (256 GB).
Asus ROG Phone 3 (12GB RAM + 512GB)'s 64 MP + 13 MP + 5 MP Triple Rear Camera outclasses Oppo K13 (8GB RAM + 256GB)'s 50 MP + 2 MP Dual Rear Camera in terms of resolution. Asus ROG Phone 3 (12GB RAM + 512GB) will be better choice if you're looking to click lot of selfies as it has better 24 MP Front Camera in comparison to Oppo K13 (8GB RAM + 256GB)'s 16 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 10 and the second one on 15 version.
| Name | Asus ROG Phone 3 (12GB RAM + 512GB) | Oppo K13 (8GB RAM + 256GB) | 
| General | ||
| Model | ZS661KS-6A006IN, ROG Phone 3 | CPH2729 | 
| 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 | July 22, 2020 | April 21, 2025 | 
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case | |
| Design | ||
| Dimensions | 78 x 171 x 9.85 mm | 76.1 x 163.2 x 8.5 mm | 
| Weight | 240 g | 208 g | 
| Bezel less | No | |
| Colors | Icy Purple, Prism Black | |
| Display | ||
| Type | Color AMOLED Screen (16M Colors) | Color AMOLED Screen (16.7 M) | 
| Touch | Yes | Yes | 
| Size | 6.59 inches, 2340 x 1080 pixels, 144 Hz | 6.67 inches, 1080 x 2400 pixels, 120 Hz | 
| Aspect Ratio | 19.5:9 | 20:9 | 
| PPI | ~ 391 PPI | ~ 395 PPI | 
| Screen to Body Ratio | ~ 79.9% | ~ 86.5% | 
| Glass Type | Corning Gorilla Glass 6 | |
| Brightness | Global Default Maximum Brightness: 600nit, Global Excitation Maximum Brightness: 1200nit | |
| Features | HDR10+ | Contrast Ratio: Static: 6000000:1, Dynamic: 12000000:1 | 
| Notch | Yes, Punch Hole | |
| Curved Display | No | |
| Memory | ||
| RAM | 12 GB | 8 GB | 
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 512 GB | 256 GB | 
| Storage Type | UFS 3.1 | UFS 3.1 | 
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| 5G | Yes | Yes | 
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Wifi Version | Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), 802.11a/b/g/n | |
| Bluetooth | Yes, v5.1, A2DP, LE, aptX HD, aptX Adaptive | Yes, v5.2 | 
| USB | Yes, USB-C | Yes, USB-C | 
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging | 
| IR Blaster | Yes | |
| Performance | ||
| AnTuTu Score | 711,176 (Total) (v10) 232,955 (CPU) 180,841 (GPU) 133,763 (Memory) 163,617 (UX) | |
| AnTuTu Storage Score | 93,365 1912 MB/s (Read), 1005 MB/s (Write) | |
| Geekbench Score | 2,873 (Multi Core) (v6) 986 (Single Core) | |
| 3DMark Score | 952 (Wild Life Extreme) (5.71 FPS) | |
| Extra | ||
| GPS | Yes | GPS, AGPS, BDS, GLONASS, GALILEO, QZSS | 
| Fingerprint Sensor | Yes, In Display | Yes, In Display | 
| Face Unlock | Yes | Yes | 
| Sensors | Gyroscope, E-compass, Proximity Sensor, Ambient Light Sensor, Hall Sensor, Accelerator, Gyro (Support ARCore) Ultrasonic Sensor | Accelerometer, Gyro, Proximity, Compass | 
| 3.5mm Headphone Jack | Type C | No | 
| NFC | Yes | |
| AI Features | AI Clarity Enhancer, AI Unblur, AI Reflection Remover, AI Eraser, Screen Translator, AI Writer, AI Summary, AI Mobile | |
| Extra | DLNA, TV Out | |
| Splash Resistant | Yes | |
| IP Rating | IP65 | |
| Dust Resistant | Yes | |
| Extra Features | ROG GameCool 3 Cooling System, AirTriggers, RGB LED Lighting, ROG Gaming Accessory Support | 60cm² Graphite + 57cm² Ultra-large VC, GOAT Durablity 50+ Quality Checks | 
| Camera | ||
| Rear Camera | 64 MP ƒ/1.8 (Wide Angle) 13 MP ƒ/2.4 (Ultra Wide) 5 MP ƒ/2 (Macro) Macro | 50 MP ƒ/1.8 (Wide Angle) OV50D40 Sensor, 1/2.88 inch Photosensitive Area, 0.612um Single Pixel, FOV: 75.5 Degree, 5P Lens 2 MP ƒ/2.4 (Depth Sensor) OV02B1B Sensor, 1/5.00 inch Photosensitive Area, 1.75um Single Pixel, FOV: 89.1 Degree, 3P Lens | 
| Camera Sensor | Sony IMX686 | |
| Auto Focus | Yes | Yes | 
| Features | HyperSteady Video (Uses Wide Angle Camera for Stabilization) | HDR, Panorama | 
| Video Recording | 8K @ 30 fps UHD, 4K @ 120/30/60 fps UHD, 1080p @ 240/30/60 fps FHD | 4K @ 30 fps UHD, 1080p @ 60 fps FHD | 
| Flash | Yes, LED | Yes, LED | 
| Front Camera | 24 MP ƒ/2 | 16 MP ƒ/2.5 (Wide Angle) Punch Hole | 
| Front Video Recording | 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD | 1080p @ 30 fps FHD | 
| Technical | ||
| OS | Android v10 | Android v15 | 
| Custom UI | ColorOS 15 | |
| Chipset | Qualcomm Snapdragon 865+ | Qualcomm Snapdragon 6 Gen4 | 
| CPU | 3.09 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor | 
| Core Details | 1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585 | 1xCortex-A720s@2.3 GHz & 3xCortex-A720s@2.2 GHz & 4xCortex-A520s@1.8 GHz | 
| Fabrication Node | 4nm | |
| GPU | Qualcomm Adreno 650 | Adreno | 
| Java | No | No | 
| Browser | Yes | Yes | 
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | MP3, AMR, APE, OGG, FLAC, WAV, MIDI, WMA | 
| Video | Yes | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV | 
| FM Radio | No | No | 
| Speaker Type | Dual Stereo | |
| Audio Features | An Immersive Surround Sound Experience | |
| Document Reader | Yes | Yes | 
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 6000 mAh | 7000 mAh, Graphite Battery | 
| Fast Charging | Yes, 30W ROG Hyper Charge | Yes, 80W | 
| Reverse Charging | Yes | |
| Video Playback Time | 15 hours | |
| Music Playback Time | 32 hours | |