What's the point of dual loop?

[HueyLewy]

What are you trying to do? Cool down the sun?

 

I don't understand the point of dual loops, one for the CPU and one for the GPU, because(from what I read) as long as your GPU is under 89 Celsius you won't thermal throttle. Am I missing something or...?

[LIGISTX]

3 minutes ago, HueyLaurn said:

What are you trying to do? Cool down the sun?

 

I don't understand the point of dual loops, one for the CPU and one for the GPU, because(from what I read) as long as your GPU is under 89 Celsius you won't thermal throttle. Am I missing something or...?

Not missing anything. People do it for looks, there is no performance benefit to be had.

 

Technically..... splitting them up lowers CPU temps as the GPU is kicking out more heat, but in reality, yea it doesn’t matter. A custom loop won’t ever run parts too lot unless it doesn’t have enough rad space, or your pushing an overclock beyond what can be cooler via conventional cooling. 

[Guest]

12 minutes ago, HueyLaurn said:

(from what I read) as long as your GPU is under 89 Celsius you won't thermal throttle. Am I missing something or...?

You lose boost potential. Idk what the exact scaling , but Nvidia's boost technology will allow you to run higher clock at lower temps. With my loop I can run my 2080 Ti at 2160MHz without issue. If it was running at 88C, it would try to clock itself down to something like 1850. Does this have much real world benefit? Not really. But neither does even a single loop lol. Water cooling is not about making sense.

[Mick Naughty]

Not sure what dual loops and 89 degrees have to do with each other.

Maybe I like to swap my cards before my cpu, which was common when cpu's could actually keep up with the next gen card.

Heat isolation, thus potentially less noise depending on system setup.

Looks and maintenance being another reason. Why not do it?

[HueyLewy]

1 minute ago, Mick Naughty said:

Not sure what dual loops and 89 degrees have to do with each other.

A dual loop keeps things more cool, but just having one loop already gives you the maximum performance.  

2 minutes ago, Mick Naughty said:

Heat isolation, thus potentially less noise depending on system setup.

Looks and maintenance being another reason. Why not do it?

Wouldn't having more fans cause more noise? Also how does a dual loop help with maintenance since you need to double the maintenance since you have two loops to take care of. Also a reason not to do it is just because of the extra hundreds of dollars that you would need.

[Tristerin]

13 minutes ago, HueyLaurn said:

A dual loop keeps things more cool, but just having one loop already gives you the maximum performance.  

Wouldn't having more fans cause more noise? Also how does a dual loop help with maintenance since you need to double the maintenance since you have two loops to take care of. Also a reason not to do it is just because of the extra hundreds of dollars that you would need.

Its also about staying as far from thermal equilibrium as possible.  The max temp your loop hits (water) affects the ability for it to carry heat away from the blocks.  When you add another block in the mix there is more voltage of heat being absorbed so the loop water temperature will be increased thus affectings its ability to cool down the blocks as well.

 

I run 10 fans on my CPU/GPU loop - depends on the fans, and the speeds you run them at.  

 

The maintenance, for me, has nothing to do with pulling a valve and draining the loop - its about cleaning out the radiators (Im looking at you dust).

Spending money is not a reason not to do something if you have the money to spend/desire to do so.  I also source all my parts from china direct and pay pennies on the dollar for my blocks, pumps, rads, fittings, tubing - and use antifreeze as the coolant - compared to buying them stateside.   I could easily do two loops in my case, enough room, I just dont feel like doing it.

[Mick Naughty]

19 minutes ago, HueyLaurn said:

A dual loop keeps things more cool, but just having one loop already gives you the maximum performance.  

Wouldn't having more fans cause more noise? Also how does a dual loop help with maintenance since you need to double the maintenance since you have two loops to take care of. Also a reason not to do it is just because of the extra hundreds of dollars that you would need.

Dual can potentially keep things cooler. With no details that can’t be said. 
It’s the same amount of fans with a dual or single loop. The point being if only one device is being taxed, only those fans would spin up. And you lose cooling potential. But that comes down to the actual setup and fan config. Just vague statements with zero details but having two loops. 
Maintenance is double but you can also design the loops better to drain with ease compared to the average single loop. 
another pump and two more fittings isn’t hundreds of dollars. So that isn’t a good reason not to.