Water cool loop order

[uacole]

Sorry for the crude drawing but is this loop order ideal or is there a better ordering I can do?

[dany_boy]

As JayZTwoCents says "Loop order doesn't matter (as long as you have sufficient radiator capacity)"

[Oshino Shinobu]

I would get a reservoir that can take a top inlet port and use that rather than inlet and outlet at the bottom looks cleaner that way IMO. That's basically how I have my loop done (with the inlet at the top of the res). It looks fairly clean

[NoobCase]

Order is fine . If you plan on having the water come into res from the top, make sure to get the internal tube/pipe for the res to avoid air bubbles forming

[uacole]

1 minute ago, NoobCase said:

Order is fine . If you plan on having the water come into res from the top, make sure to get the internal tube/pipe for the res to avoid air bubbles forming

What exactly is an internal tube/pipe? 

[Enderman]

That's a pump res combo there right?

That's fine, the rest of the loop literally does not matter.

 

btw unless you're buying cross flow rads, both tubes exit the rad on the same side, you might need to fix your drawing because it looks like there is only one tube...

[Enderman]

1 minute ago, uacole said:

What exactly is an internal tube/pipe? 

 

[Oshino Shinobu]

4 minutes ago, Enderman said:

btw unless you're buying cross flow rads, both tubes exit the rad on the same side, you might need to fix your drawing because it looks like there is only one tube...

Seems right to me. Lines going from pump to rad then rad to GPUs. Then GPUs to rad and from rad to CPU. 

[Enderman]

2 minutes ago, Oshino Shinobu said:

Seems right to me. Lines going from pump to rad then rad to GPUs. Then GPUs to rad and from rad to CPU. 

Oh I didn't realize the GPU was in the loop, I thought it was just his shitty drawing lol.

[uacole]

23 minutes ago, Enderman said:

Oh I didn't realize the GPU was in the loop, I thought it was just his shitty drawing lol.

Hahaha I mean it is a shitty drawing. Good thing I teach math not art.

[uacole]

http://www.performance-pcs.com/ek-xres-140-revo-d5-pwm-incl-pump-glass.html

Would this pump work as a top inlet and internal pipe? Or are there better options at that size.

[Enderman]

9 minutes ago, uacole said:

http://www.performance-pcs.com/ek-xres-140-revo-d5-pwm-incl-pump-glass.html

Would this pump work as a top inlet and internal pipe? Or are there better options at that size.

Do you want to use a top inlet?

Because you can also just use the front inlet on the side of the pump, that works too without a pipe.

[Mick Naughty]

Same setup im running. Changed the order a few times, nothing ever changed. I have the same pump as well, about to get a second one. You should be with with using a top port if needed, but get the additional piece or just use both ports on the pump itself. 

 

Horrid pic though. 

[uacole]

Also where is a good place in the loop to have my drain port?

 

[NoobCase]

6 hours ago, uacole said:

Also where is a good place in the loop to have my drain port?

 

lowest point in your loop. I'd put it at the lowest port on your radiator. A drainport on the res can also be a good idea.

[Leonard]

13 hours ago, uacole said:

Sorry for the crude drawing but is this loop order ideal or is there a better ordering I can do?

My god man, this thing already looks like the gory part of a horror film you could have at least put some arrow heads to show direction.....look you have a 360 plus a 280 radiator so once you add a pump with strong pressure head and flow then you will be golden once all the inlets are actually inlets and the same for the outlets.

 

Enjoy the journey.

13 hours ago, dany_boy said:

As JayZTwoCents says "Loop order doesn't matter (as long as you have sufficient radiator capacity)"

Try running at least one outlet as an inlet in a loop and see if that statement holds true.

10 hours ago, Mick Naughty said:

Same setup im running. Changed the order a few times, nothing ever changed. I have the same pump as well, about to get a second one. You should be with with using a top port if needed, but get the additional piece or just use both ports on the pump itself. 

 

Horrid pic though. 

JENGA!!!!

[FrankV]

21 hours ago, dany_boy said:

As JayZTwoCents says "Loop order doesn't matter (as long as you have sufficient radiator capacity)"

I'm really interested in the reasoning behind this. I know he's said this before -- I recall that video but the question is "Why is this the case?"

 

Surface logic indicates that going from the source of the heat -- to the reservoir would slowly heat up all of the fluid and while obviously running it through the radiator would cool it down before sending it to the CPU it just makes the most sense to me to cool the fluid before returning it to the reservoir.

 

Seems like that would keep the whole loop on the cool side... 

[FrankV]

18 hours ago, Mick Naughty said:

Same setup im running. Changed the order a few times, nothing ever changed. I have the same pump as well, about to get a second one. You should be with with using a top port if needed, but get the additional piece or just use both ports on the pump itself. 

 

Horrid pic though. 

 

An unrelated question, how many radiators do you have and what components flow to which radiator? How many components do you feel is ok before you must go to the radiator? 

[Oshino Shinobu]

4 minutes ago, FrankV said:

I'm really interested in the reasoning behind this. I know he's said this before -- I recall that video but the question is "Why is this the case?"

 

Surface logic indicates that going from the source of the heat -- to the reservoir would slowly heat up all of the fluid and while obviously running it through the radiator would cool it down before sending it to the CPU it just makes the most sense to me to cool the fluid before returning it to the reservoir.

 

Seems like that would keep the whole loop on the cool side... 

Because of the laws of thermodynamics. 

 

EDIT: Basically, the water in the loop moves fast enough that the temps of the water do not matter from component to component. Even if the water is a little hotter after it reaches a component (which it is), it does not impact the water's ability to absorb heat in any meaningful way.

[FrankV]

23 minutes ago, Oshino Shinobu said:

Because of the laws of thermodynamics. 

 

EDIT: Basically, the water in the loop moves fast enough that the temps of the water do not matter from component to component. Even if the water is a little hotter after it reaches a component (which it is), it does not impact the water's ability to absorb heat in any meaningful way.

While a bit prickly, I appreciate your reply. 

 

However, after posting my question, I came upon this on the EKWB website and I think it's worth sharing: 

 

Quote

The pump set to 50% of speed circulates the whole volume of the coolant in a few seconds. So, whatever the loop order is, you will get pretty much even liquid temperatures throughout the whole loop. Large and complex loops with multiple GPUs can show temperature variations between a few spots, but that is again nothing to be concerned of. 

 

Source: https://www.ekwb.com/blog/does-loop-order-matter/

[Oshino Shinobu]

2 minutes ago, FrankV said:

While a bit prickly, I appreciate your reply. 

Didn't intend for it to come over that way. Was actually looking for somewhere that has a decent explanation of it as it would take forever to write out the whole thing. Couldn't find one that doesn't either make things very vague (typically just a forum post) or go into extreme detail explaining thermodynamics. 

 

It's mostly a matter of the amount of heat a component outputs increases the water's temperature so little it doesn't really matter when the water is moving as fast as it is. As long as the water is cooler than the components it is cooling (or rather, absorbing heat from), it can still absorb heat, so a few degrees isn't going to make a huge difference. As the water is flowing so quickly, the rads are cooling all of the loop as a whole rather than it being a matter of water going to pick up loads of heat, then go get cooled (in a sense).

[Mick Naughty]

1 hour ago, FrankV said:

 

An unrelated question, how many radiators do you have and what components flow to which radiator? How many components do you feel is ok before you must go to the radiator? 

I Only had 2 rads, the other 360 rad is in the back with the pump. I don't like front mounts as it dumps way too much heat in my case. Especially this high split fin fpi rad. I threw the second 360 back in last weekend along with the flow meter and I added the sli water block again. I only care about temps, order doesn't concern me if the loop is doing its job. The water normalizes so it really doesn't matter.

 

Order is pump> rear 360> flow meter> 280 rad> ram block> south bridge> cpu> mosfets/vrm> gpu1/gpu2> front 360> gpu backplate 2> gpu backplate 1> reservoir.

[uacole]

I have another question. Is a 280mm rad and a 360mm rad, both 30mm thick, sufficient to cool a 7700k and 2 strix 1080's. Also I will be using the 2000rpm industrial noctua fans. I 

[Mick Naughty]

Of course. But assuming those thin rads will be high fpi. I use those fans on my rig, not the most quite but they perform well. Compared to the tanish series. 

[Phate.exe]

When I had the GPU in my loop, I went 5.25 bay Res (highest point in the loop) to pump (under the drive cages) to GPU to 240mm rad (on the bottom below the GPU) to CPU to 140mm rad (rear of the case) and back to the reservoir.

 

The system self-bled amazingly well, but when I put the RX 470 in I didn't feel like yanking the cooler off so I just eliminated the GPU and 240mm from the setup.

 

I might put the block from my old card on the RX 470 for the hell of it once I know that I won't ever need to pull the 470 out again.

 

 

 

The actual order doesn't really matter much.  Temps within the loop end up fairly uniform with maybe a few degrees difference before and after the rad.