Mining with GPUs hasn't been profitable since around 2014. GPUs have largely been replaced by ASICs (although certain coins are still mineable with GPUs, like Ethereum[1], as discussed in the article). Bitmain[2] is (AFAIK) the manufacturer of ASICs for mining.
[1]: https://motherboard.vice.com/en_us/article/59zdjq/an-idiots-...