The gpuShack R9 280X runs at approximately 180W.

http://gpushack.com/collections/gpushack/products/gpushack-r9-280x

The powerful modular fan upgrade allows for average operating temperature 10C colder compared to manufacturer stock fans. The modular fan uses 15+ watts, which is 10x more powerful (and louder) than manufacturer 1.5+ watt stock fans. Ideal for deployment for large-scale commercial uses.

Bitcoin accepted, shipping available to all countries.

This GPU can earn $1.79 USD equivalent per day in zcash (earnings will vary) according to this calculator: https://www.cryptocompare.com/mining/calculator/zec