Its proberbly the heat spreader on the CPU, i read someone who dropped their temps by 20 degrees by removing it, my gpu never goes over 39 and my cpu hits 65 on full load also, ill be looking into removing the heat spreader after ive found my max overclocks at 65 degrees.
edit: Just tried wacking a few volts through my chip on prime, gos up to 80 at 1.4v, got perfect contact on the cooler, so must have aweful contact onto the heatspreader, aint even warming my loop up more than 1 degree.