On Thu, Apr 15, 2010 at 1:09 PM, Hugo Vanwoerkom <hvw59601@care2.com> wrote: > Does that mean that placing 2 1GB modules, each into a different colored > slot, is faster than putting 1 2GB module into one slot and leaving the > other 3 slots empty? on my server board the machine will not even boot up if memory is not installed in matching pairs. so only 3 memory sticks installed will not work. 2 / 4 / 6 or 8 only. ...on my machine.