hi there i no no this may sound likea stupid question but i have 4x ddr2 slot i curruntly have 2x1gb ocz platium 6400 800mhz ram installed 1 either side and im looking on installing anouther 1gb just wonderd does it matter if i have two 1gb sticks one side and 1gb stick on the outher channel?does it affect performance?or should i get to 2x512mb sticks to even it out?