Shark Mining has another entry in this list of best mining rigs, this time with its Shark PRO mining rig. Like the Shark mini, this is a well-built device for mining that comes with a range of configuration options. The base model comes with six GTX 1070 cards, but these can be upgraded to GTX 1070 Ti or GTX 1080 Ti GPUs. It's an expensive rig, but the build quality and potential profit makes it a very tempting choice if you're serious about mining.
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