My rig has been idling at like 47-49ishC lately but it only maxxes out at like 51C. The room temp has been a little big higher lately, but not much, I blew a bunch of dust out of my radiator the other day and that didn't help too much surprisingly. I have an abit nf7-s with a mobile axp @2.6ghz gettin 1.85 volts. i have a dtek spiral block with a c-systems csp750 black dtek version pump and a single 120mm heatercore with a push pull config with 2 fans. I also have a dangerden round reservoir that is about 3/4 the way full. Could more water help? I have about 20% zerex racing coolant to distilled water mix. There is nothing growing in the res and the flow hasn't dropped lately so i'm assuming everything is still clean, but i filled the system last summer originally and have done not water maintenace since. Thanks