Originally Posted by kdon
Excuse me armchair scientist, how about instead of being a snobby ass with clearly no technical knowledge you listen to a guy who has active temperature monitoring on his loop and clearly knows his deltas (stallion). Also a company who bases their results on empirical date (skinee labs) states that loops can get up to a 15c delta if not optimized. Plus if there is a 1.5c temp difference between water going into your rad and then out, then what the hell if your rad doing. Your radiator can dissipate several hundred watts (energy over unit time derp), which is clearly going to affect the water in more than a 1.5c way... will find links to skinnee labs testing to prove you wrong if you'd like
Tldr: you're wrong, let's see empirical data from testing that proves you right, because actual data disagrees with your armchair scientistry
No, I'm not wrong, its you that don't know what you are reading. When skinne talks about Delta he means Delta Air in-Water average. He ain't talking about Delta Water in-water out. Thats why a loop with a 10ÂºC Delta (air in-water average) is a normal loop; but for that to be a water in-out it would be a VERY extreme one.
So, this is my backup:
You can see that for normal flowrates (0.8-1.6GPM) and normal fan speeds (800-1200rpm) and a normal load (~380W) you have a Water in-out Delta of 1-2ÂºC (depends on many variables, but around those figures).
Now, the word "Delta", like that withouth any more words is used 99% of the time to refer to the value "Air in - average water Delta". Out of context it means nothing, because a loop with a water in-out Delta of more than 3-3.5ÂºC is not a normal one by no means and thus my answer.
Obviously a loop with a 980X and 4 x GTX580 is not a "normal" loop by any definition...and forgive me to say it, but its VERY unoptimized if you understand that different components have different needs in order to be cooled efficiently.