Arduino vs Raspberry Pi.
What you think which one is best.
As we know that Arduino is an development board . Arduino board designs use a variety of microprocessor and controllers. The boards are equipped with sets of digital and analog (I/O) pins that may be interfaced to various expansion boards or (shields) and other circuits. The boards feature serial communications interfaces, including (USB) on some models, which are also used for loading programs from personal computers. The microcontrollers are typically programmed using a dialect of features from the programming languages C and C++
Processor speed ranges from 700 MHz to 1.4 GHz for the Pi 3 Model B+; on-board memory ranges from 256 MB to 1 GB RAM.(SD) cards are used to store the operating system and program memory in either SDHC (early Raspberry Pi's) or MicroSDHC (Later Raspberry Pi's) sizes. The boards have one to four USB ports. For video output, HDMi and composite video are supported, with a standard 3.5 mm jack for audio output. Lower-level output is provided by a number of GPIO pins, which support common protocols like I2C. The B-models have an ethernet port and the Pi 3 and Pi Zero W have on-board wifi and Bluetooth
Below one in above post paragraph is about the Raspberry Pi specifications.