Hello recently i purchased some pc 3200 DDR 512 kingstons. I installed it in my computer with my older ram which is is pc 2700 256. I have 4 ram slots and I bought 3 of this kingstons. I left one stick of my old ram giving me a total of 1.75. I know my system is not going to take advantage of the higher bus speed but Im not sure if taking out the old stick of ram and having just 1.5 is worth it. So my question is as follows. Is it better to have 3 sticks of pc 3200 kingstons or is it better to have 3 sticks of pc 3200 and 1 stick of 2700. Thankyou for any help.