ASIC device usually has much better mining performance than graphics card. It is more energy-saving and has a much higher hashrate.
The Bitmain Antminer S11 (20.5Th) was produced by Bitmain and released in 2018. This miner consumes 1530W, producing 20.5 Th/s of hashrate with the sha-256 algorithm, which makes this device almost (if not at all) useless. We do not recommend buying this device for mining nowadays.