USB - Yes you can connect the High Flow next via USB2.0. This is the newer and preferred method. Aquabus is an older, slower serial connection that is primarily used with Aquaero controllers. It is slow and has limited bandwidth. If you want your High Flow next to show up in Aquasuite (which you definitely want), you have to connect it's USB cable to a mobo USB header. I am pretty sure that firmware updates have to be done over USB. If you don't have enough USB2.0 headers on the mobo, get a HUBBY7 internal USB2.0 hub. .

Sensor noise - I assume you are referring to the High Flow next flow sensor. I don't have a High Flow Next or a D5 pump (yet) so I can't give you a definite answer. I know that the older flow sensors tended to make a ticking sound but I don't know if the High Flow also does this. Flow rate, within reasonable limits, does not really affect temps very much. I would get everything hooked up and try some different pump speeds. If you can run the pump at a lower speed and your temps are still OK, then use that speed. Some people like to control pump speed dynamically based on temp data. This is not going to improve your temps very much if at all so I don't see the point in doing it. I suspect constantly varying pump speed is probably harder on the pump too. I would try running at max for a bit then check your coolant temps. Then reduce the speed by 10% and check temps again. Keep doing that until temps start to increase. Increase the speed by 10% and call it done.

I just connected all my devices (D5, HFN, LeakS) by USB, I don't even use Aquabus.

I have flow of about 240 L/h and if you are very close then you can hear a ticking, its very quite though, I don't remember exactly the speed but when it was slower it was totally silent.

I have my pump at constant 67% to get 240 L/h I just leave it there all the time, so I am also of the opinion that its not worth it to make a variable pump speed. However, my research was that above 227 L/h doesn't really have any significant benefits, the temperature difference across my rad is 1 °C, and the chilled water is 8 °C over ambient. I think that running the pump at 100 % can shorten the life, although D5's seem to be very reliable in general, so 67% was just a round 2/3rd

oh way below that flow is still overkill
GPU temp increases drastically below 80 ish L/h for me, but that varies depending on what GPU block you have. very bad ones like Corsair may need more flow to perform decently.
For me above 100L/h up to the max flow of the pump (~210L/h) i may gain a degree, or two with some luck.
So yea, no ticking at those speeds (across the board for me anyway on HF2, no noise).
Orientation will play too (always horizontal), and if you have bends close to the flowmeter it may disturb it.

Bottomline : it varies from build to build. if it ticks, contact support :p

I would say at 2000 rpm then it would drop to that inaudible level, with my fans at 850 rpm I can't hear it with the pump 3969 rpm/67%.

I ran the pump with the flow meter by themselves then you could really hear that its mainly the rate, I can imagine if you had 90's on each side then it could be different, also from Igor's Lab this effected the accuracy also.

D5 have some noisy speed ranges. when i was using them there were spots where they resonated with the case. I remember 55%, 65%, 77%.. and above it's just noisy because of speed itself.
but if i stayed away from these dodgy spots, the pump was always quiet.
It's definitely flow that causes ticking, but on every occurence in the forum, it was requested from aquacomputer that people contact support because the ticking should not happen, certainly not at moderate or low flows.

You probably still have high flow despite the XR5 being somewhat restrictive. I have 3 equivalent rads in my loop (hardware labs, OEM for Corsair's) and the flow tops at 220L/h with 3 waterblocks.

If your main goal is silence, you can definitely add radiators to further reduce fan speed and still get decent temperatures.

the PWM connector is only an output :
"The signal output can also be configured to generate a flow signal for another connected device or a fan speed signal for the motherboard (100 l/h resulting in 1000 rpm)."

You'll need a fan controller to... control the fans '
If you already have a deepcool hub you can just connect it to the motherboard and use its software to do the fan curve, but you('ll need to add a temperature sensor to the loop.
Otherwise you'll need a Quadro, since you don't require lots of PWM channels. It's a lot more affordable than Octo.

But if you only want to use a basic fan curve based on water temperature, the motherboard is enough. You'll need a Quadro only if you want to use more advanced control, like to auto adjust the curve for your room temperature (fan control based on water temp minus ambient temp)

my 2 cents : if you go motherboard control, the High Flow 2 may be more handy since it has temp sensor output and PWM output for flow (no USB)
If you go HF Next, all USB, then it's probably better to go full Aquasuite control and get a Quadro. You'll have flow and temp readings from the HFN, all useable in AS for fan control.
Then you'll have more temperature inputs too if you want to use virtual sensors for better fan control as i said above, and even some useless but fiun stuff like power dissipation measurement etc etc (and quadro has one RGB channel on top.)

With regards to output as alarm options are:




as Remayz said its not clear how your fan hub would know from the HFN what to do. Since I have the D5 Next, I connected my 6 fans (9 W) to this since it can do up to 25 W, the D5 also has a temp sensor so I run the water fan curve off that.

I did plan to do something like you so I had bought 53067 since my motherboard has a 2 pin header then I could use this 2 pin input the the onboard fan controller.

I don't think the new devices are designed to talk to each other on a hardware level, the aquero can do it I believe via aquabus as you said.


What I did is connect all the fans to the D5N since this has a fan plug, the D5N also has temp sensor in the water so I use this as the signal to control the speed.

If you want the quadro to do it in hardware then you can connect a sensor to the quadro directly then this sensor would be the input to controller

From Aquasuite, then any sensor can be the input, but you have to have software running.

Sorry, I was confused as well .

Yes, HFN doesn't have fan output so you'll need the Quadro for that. You could make a software sensor on the Quadro from the temp sensor in the HFN if you didn't want full hardware control, since aquasuite is needed for soft sensors.

I used the GPU temp from HWInfo to control the fans speed on Quadro

I recall a discussion about the temp sensor in the D5 Next not being accurate because it is influenced by waste heat from the pump electronics. I think an actual temp sensor in the flow path that is not inside the D5 Next is probably going to be more accurate. I am not sure if the temp sensor in the High Flow Next also has accuracy limitations.

Zitat von »Speedy-VI«

I recall a discussion about the temp sensor in the D5 Next not being accurate because it is influenced by waste heat from the pump electronics. I think an actual temp sensor in the flow path that is not inside the D5 Next is probably going to be more accurate. I am not sure if the temp sensor in the High Flow Next also has accuracy limitations.

It was discussed HERE.
The sensor in the high flow next appears to function acceptably with coolant flow, as the bias is overwhelmed by the coolant.
The issue is more in using the automatic external sensor calibrations

Zitat von »InfoSeeker«

Zitat von »Speedy-VI«

I recall a discussion about the temp sensor in the D5 Next not being accurate because it is influenced by waste heat from the pump electronics. I think an actual temp sensor in the flow path that is not inside the D5 Next is probably going to be more accurate. I am not sure if the temp sensor in the High Flow Next also has accuracy limitations.

It was discussed HERE.
The sensor in the high flow next appears to function acceptably with coolant flow, as the bias is overwhelmed by the coolant.
The issue is more in using the automatic external sensor calibrations

OK I was mixed up. It was the sensor in the HFN that is affected by waste heat from the electronics. I thought it was the D5 next so thank you for correcting me.

Zitat von »sebastianer«

Hi
Sebastian

I saw an answer once,
aquabus is an old channel reserved for linux-like operating systems, is it correct?
Most peripherals can be connected to a PC via USB 2.0 for firmware upgrades and communications.
HUBBY7 is a part with USB2.0 expansion function, which can connect seven USB2.0 peripherals.
in addition,
Some peripheral sensors must use aquabus to communicate. For example,
electronic temperature sensors such as Calitemp still rely on aquabus ports to connect to aquaero 5/6 XT or LT.
I installed four calitemp sensors, which are used in the water inlet of CPU and GPU. and water outlet.
Temperature data is very accurate. Other than that : USB2.0 is a must, but aquabus is not.