We have deployed a HP Proliant ML350G6 with 12GB for SBS 2011. It doesn't seem to be enough and the only cost effective upgrade for this client is another 6GB to a total of 18GB.
The current config is 6x2GB which is running at full speed, but as I understand it, if I populate the 3rd banks then the server memory performance will drop. It's a single processor server.
How much real world performance will the end user notice if we use this non performing memory configuration?