Despite their philosophical differences, Bitcoin Cash and Bitcoin have various technical similarities. Bedsides using the same consensus mechanism, they both have capped their supply at 21 million. Having limited supply would have an impact on its value.
The mining process of Bitcoin Cash is very similar to Bitcoin. During the early days of Bitcoin mining, not many computers were able to mine, and it was not also possible to mine with normal laptops and desktops using the available CPU power. In the later years, people realised they could use their graphics cards (GPUs), which were more powerful than CPUs. Thus, they began to develop mining software. As time went by, more development occurred in the mining community, the miners began using Field Programmable Gate Arrays (FPGAs) and dedicated computing rigs, ASICs (Application Specific Integrated Circuits), to maximise the mining performance and efficiency. This is the case for BCH and has resulted in an astronomical hash power for the network.