Yes, a GTX 970 can mine Ethereum. Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of fraud or third party interference.
Ethereum is based on the blockchain technology that underlies Bitcoin. However, while Bitcoin was designed as a peer-to-peer electronic cash system, Ethereum was developed as a platform to run decentralized applications.
The key difference between the two is that while Bitcoin is limited to 21 million coins, Ethereum has no limit on the number of coins that can be mined. In addition, Ethereum miners are rewarded not only for verifying transactions but also for contributing to the security of the network by mining new blocks.
The GTX 970 is a powerful graphics card that is well-suited for mining Ethereum. It has 4 GB of GDDR5 memory and can handle multiple displays.
While the GTX 970 is not the most powerful graphics card on the market, it is a good option for those looking to get started with mining Ethereum.