I have a http://www.motherboards.org/reviews/motherboards/1651_1.html and i have 4 stick of corsair value select ram. i bought them in pairs at a seperate time and they are exactly the same with timings speed everything the only difference is that the chips are on one side of the ram on the new stick instead of both. When i put all 4 sticks in my pc wont boot if i just put in a pair at a time it works fine any suggestions