The relationship between the server's bandwidth and the number of mini -programs you can host depends on multiple factors, including the frequency of access, the complexity of the applet, the performance of the server, and other factors. Generally speaking, bandwidth is one of the key factors that serve and respond to access requests. The following are some estimates:

　　Bandwidth requirements: First of all, you need to understand the expected bandwidth requirements of your mini program. This will depend on the number of access, data transmission and response time of each applet. You can monitor the bandwidth usage of the server to determine the current demand.

　　Server performance: The performance of the server is also an important factor. More powerful servers usually process more requests. CPUs, memory and storage resources can affect the performance of the server.

　　Applet Optimization: Optimized code and resources of the applet can reduce bandwidth use. Use technologies such as browser cache and compressing static resources can reduce data transmission volume.

　　Bandwidth calculation: Generally speaking, the calculation method of bandwidth is: expected to access the number of access per second × the average bandwidth of each request. For example, if your applet expects 100 access per second and each request requires an average of 1MB bandwidth, then you need a bandwidth of at least 100MB/S (800Mbps).

　　Capacity planning: In addition to bandwidth, the capacity of the server needs to be considered. If your server performance is limited, even if you have enough bandwidth, you may not be able to handle a large number of concurrent requests.

　　Network restrictions: Please note that your server provider may limit the bandwidth and traffic settings of the server. You need to understand these restrictions and upgrade as needed.

　　In general, you need to estimate the server's bandwidth needs based on your specific situation. If your applet access is not large, the bandwidth of 5Mbps may be sufficient. However, if a small program access is large or a large amount of data transmission is required, you may need higher bandwidth and more powerful servers. The best way is to perform the benchmark test to determine actual needs.