The problem with the installation of a 1070

Faced with the problem that I only have a 6 pin ribbon cable. Found on the Internet adapter, 8-pin ( http://sidex.ru/view.php?_openstat=bWFya2V0LnlhbmRleC5ydTvQmtCw0LHQtdC70Ywg0L_QuNGC0LDQvdC40Y8gMtGFTW9sZXggLSBQQ0ktRSA4cGluIChPcmllbnQgQzM5MikgLSDQmtCw0LHQtdC70LgsINGI0LvQtdC50YTRiztSYXVpWVljUWxaX1hUdHN6bW1hN0VnOw%2C%2C&id=254240&ymclid=74735847943973012480001 ). If it will fit? Will work fine? PSU GIGABYTE GZ-EBS45N-C3 (450 W). the tests shows that this PSU should be enough for 1070 not a lot of eating. Whether to move to 700 watts PSU with 6 pin+2 or try your luck and buy a adapter?