I bought a piece of patriot viper LL series 1600 mhz ddr3 pc 12800 cl 7-7-7-20 at 1,9v. I put it on msi nf980-g65 with phenom II x4 955. But unfortunately, I could not push this memory with that speed. I need some clue about how to run this kit on 1600 mhz cl 7-7-7-20 1,9v. thx very much..