lol you should never run chip or def not vrm that high good way to not have cards running for long for 24/7 mining cards should never go over 80c on the gpu i like 75c personally and no higher than 75c on vrm's i keep mine under 70c that recipe above will keep cards running years on end i have many 290/290x's that been mining 24/7 for what 5 years now since they were released lol oh and if you do them right they use 250 or less watts at stock about 220-250w depending on chip asic quality undervolting is key here if you underclock around 950mhz or so and undervolting you can run them around 180w