One main difference between Bitcoin and Bitcoin Cash is the size of the blocks on each chain. At a time when Bitcoin’s block size limit was 1 MB, Bitcoin Cash launched with a block size limit of 8 MB. Today, the block size limit for Bitcoin Cash is 32 MB, and Bitcoin’s limit remains much smaller.
In general, the bigger block size allows Bitcoin Cash to process transactions at a much faster rate than Bitcoin. Bitcoin Cash can process about 116 transactions per second, while Bitcoin can process about seven on average. In comparison, Visa processes 24,000 transactions per second.
Although BCH has a faster transaction speed, it’s not as widely accepted as BTC, and is not as liquid. Bitcoin Cash is also subject to its own debate; a hard fork from Bitcoin Cash, known as Bitcoin SV, is also in existence.