I want to deploy an Ethereum client to become a full node. According to the hardware recommendation on the official website , I need CPU with 4 cores, 16GB of RAM, 500GB of SSD and 25MB/s of bandwidth. I can configure CPU, memory, hard disk as recommended, but 25GB/s of bandwidth is a hassle for me, and 8GB/s is a bit out of my range. Therefore, I would like to ask, is such a large bandwidth necessary to synchronize an Ethereum client? How much bandwidth does your GETH need to synchronize and how many nodes are connected? Thanks very much！！！！！！！！！！！！
It says "25+ MBit/s bandwidth".
This is 3.125 MB/s, which is 0.003125 GB/s.
The actual bottleneck will be applying all the state updates to your local data, and writing them to SSD.