GpuShack is a company, dedicated to helping the average folk enter the world of GPU mining. They specialise in the mining of ZCash, Monero and Ethereum. GpuShack have a number of key selling points, including their unique operating system, ethOS. If you are looking for large scale commercial uses, refurbished GPU’s are ideal. For products referring to this, GpuShack honours the conditions laid out in the GpuShack Warranty Agreement for a period of six months, which begin from the date of the purchase. It is important that all GPU’s are tested thoroughly to ensure that they are free from performance altering defects. If you purchase a product from GpuShack, you will find that they come in completely plain packaging with no manuals, documents, cables, drivers or software, and only the actual GPU is included in the package. It is worth noting that some GPU’s heatsinks, fans, or shrouds might have light cosmetic damage, such as light scratches on them. The modular fan upgrade allows for the average operating temperature to be 10 degrees Celsius cooler than the manufacturer stock fans. It is typically four times more powerful than manufacturer 1.5-watt stock fans, when you consider that it runs on 6+watts. This makes them really ideal for deployment for large-scale commercial uses. Please note, that GpuShack accepts all major credit cards, PayPal, Amazon Payments, and Bitcoin. Any orders that are placed outside of the USA must be placed with PayPal, Amazon, or Bitcoin. Any non-USA CC orders will be cancelled.