I'm using hyperx 2666 cl 15 in my gl703gs, wasnt listed as supported but i had no problems with it being detected or running at correct speed and timings. Seems cpuz no longer detects spd profife but did on install i guess i should roll back to previous version but hwifo still detects it fine. I would say its worth trying just buy from somewhere with a return policy ass worst case can stick some crucial in.