does using different brands of memory on same motherboard casue any problems or performance issues? I ask this as I already have 512mb of 2700 ram(I have an Abit AT7(333mhz) board) and want to get another 512mb but wonder if I have to get the same brand(I currently have 512 of corsair).
Are there also any problems using different speeds of ram ie 3200 with 2700?