Well, no one is going to mine a bitcoin using the cards that are used for the puzzle so you have to break it down mining alt coins like eth, and convert earnings to bitcoin to get an estimate. Pretty sure more is made from mining AND it's guaranteed (if in a eth pool, or solo if you have enough juice) versus you may run cards 6 months, a year, 2 years, and never find puzzle key(s).
Ethereum mining on the T4 can make me about $75 a month, however this drastically reduces the speed of Bitcrack and other tools to half, sometimes even to 1/3rd, so I wouldn't particularly recommend mining at the same time.
Could you tell me how are you searching 21 million wallets and at that speed I’m using command and can only search 230 address at a time. Thanks Lostrelic
Definitely not with Bitcrack (it's not capable of those speeds), maybe he's running hashcat's SHA256 mode against millions of public keys? 450Mhash/s sounds doable for SHA256 with high-end cards.