Vivo Y51 is powered by an octa-core Qualcomm Snapdragon 665 processor. It comes with 4GB of RAM.
Vivo Y51 Key Features
6.38 inches Super AMOLED Display, 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi)
Android 10, Funtouch 10
Octa-core Qualcomm SDM665 Snapdragon 665 (11 nm)
128GB Built-in Storage up to 256GB Memory Card
48 MP + 8 MP + 2 MP + 2 MP Quad Rear Cameras
16 MP Front Camera
Fingerprint Scanner (under display, optical)
4G LTE Network
Fast Charging 18W
Non-Removable Li-Po 4500 mAh Battery
It also has support for dual-band Wi-Fi and has Bluetooth 5.0, a USB-C port, and an audio jack. Sadly there is no 5G, but 4G LTE network is available for fast browsing and downloads.