Depending on your datamining associated task, you can also consider to use GPU or even TPU. There is an associated cost, but you can reduce the processing time and that could be a tradeoff.

To optimise hardware for data mining, upgrade to GPUs or TPUs for faster computations and increase RAM and SSD storage for quicker data access. Leverage cloud services like AWS or Google Cloud for scalable power. Streamline workflows by using efficient algorithms, enabling multi-threading, and processing representative data samples instead of the full dataset during testing. Regularly monitor system performance with profiling tools to identify and address bottlenecks. These steps can ensure smoother tasks without overburdening your system.