I'm developing a program that moves a lot of data from Excel Sheets to a database. Is it possible for something like CUDA to speed up the process? Is it possible for me to use it to open more than one sheet at once and have different cores sharing the work?
CUDA can speed up computational processing, but not bottlenecks due to network bandwidth / latency, or slow (compared to the rest of your application/machine) IO performance. In your case, you are probably not putting a lot of stress on your CPU, so your code will most likely not benefit from offloading code to the GPU.
Edit: Basically, what Anon says.