Yes they are brand new. 2 dimms (2x4GB-CMZ8GX3M2A1866C9) to dual channel. But I think using the prime95 at the blend test, it had to be crashing if rams had issues.
Because system is not stable at 1.5V using 1866Mhz but only at 1600Mhz. Also on my 1090t I'm using 1.65V to my Kingston Predator T2 2133MHz instead of 1.6V.