It takes a lot of computational power to mine Bitcoin, and that power comes from graphics cards. A single Bitcoin is mined by a computer solving a complex mathematical problem, and the difficulty of that problem increases as more Bitcoins are mined.
So, it would stand to reason that it would take more than one graphics card to mine a Bitcoin.
However, there are some factors that can affect how many graphics cards are needed to mine a Bitcoin. The first is the type of graphics card. Some cards are simply more powerful than others and can mine Bitcoin faster.
The second factor is the efficiency of the card. Some cards are more efficient at mining than others, meaning they use less power and produce less heat.
The third factor is the type of mining software used. Some software is better at using multiple graphics cards than others.
And finally, the fourth factor is the difficulty of the mining pool. If the pool is small, it will take less time to mine a Bitcoin, but if the pool is large, it will take more time.
So, how many graphics cards does it take to mine a Bitcoin? It depends on a lot of factors, but typically it takes more than one card to mine a single Bitcoin.