Dual Loop versus Single, the facts

[MrBean]

are very small rads often sufficient for stable usage of particular hardware set on generic usage, not folding/crunching? - indeed, often yes.

Good points. For the record though, I (very stupidly) had my system 10 hours running OCCT, with dual instances of Furmark.

Ambient was around 32 deg C, water temp stabilized at 37 or 38, GPUs maxed out at 42, and CPUs at 50-52 deg C. The problem with ever shrinking dies are not really raddage et al, rather getting the heat out of the CPU.

Last comment from my side, a Feser 240mm rad has a lot of surface area, and tied with the heat-capacity of water, well.....you would not get aircooling on both my quad Xeons, as well as the 5990, to get temps this low and stable, not with 30 deg C plus ambients. I invite anyone on here to prove me wrong

Have a good one guys, talk later again.

Procs are far more dependent on or, sensitive to, temps for oc'ing so they get more radiator than needed to over cool them in order to maintain a very narrow temp delta.

I will respectfully disagree in parts with this statement. Even 10-20 deg C real die-temp decrease will not yield significant overclocking gains - to really push your system, unfortunately, you will need to drop die temp to way low negative temps, like -20 and lower, much lower. So, the difference to overclocking potential between a Feser 480 and 3x Feser 480's will be, well, I wonder if you will see 1-2%.

I am serious overclocker - if I cannot gain 20-30% +, why waste time I simply will not spent 4x the money on extreme WC to gain 1-2% over what I have now - in that case, I'll rather buy a more powerful gfx card...

Again, simply my opinion, based on my experience stemming from watercooling/extreme cooling since 1997, but as stated earlier, whatever works for you....