Hmm thing with default is that it sets 5-7-7-24 and not 5-5-5-15 and i think it errors up in memtest too...
I think that sticks are fine but i will test soon one by one..
Also QVL for rams says nothing about 2GB sticks and is really very short, but there u can see model cm2x1024-8500c5 which is like mine only i have a 'd' in the end...
So i guess corsair wasnt a good choice here...thanks anyway guys, will come back with memtest results on each dimm