i have a g41c vs motherboard with 4 memory slots, two that support ddr3 n two that support ddr2 i am currently running 2 ddr3 2gb sticks in dual channel mode , and i want to run another two 2gb *ddr2* sticks but 1 is 400 mhz n the other is 533 please check my motherboard if you need specs because it says ddr2 533/667/800 ??