Flow rate impact on temprature?

0ld_Chicken · December 20, 2015

I think I might get the biggest drop in temp, by changing radiators, as I'm trying to have a silent setup.

The EK rads dont seems to like low speed fans, based on numbers I have found.

That along with a better fan and pump solution (my motherboard seems buggy as the 2 pumps plugged into the cpu header, dont seem to run at the same speed), would probably be the best I could do.

http://www.xtremerigs.net/2015/02/11/radiator-round-2015/5/

as far as I can tell (these are the 360 versions, not 480) but the xtx at least is a great performer all across the rpm spectrum. I'd like to think that EK's fans would perform well on their own rads but I dont know to be honest. I have one 1800? rpm vardar and wasn't too impressed with its performance/noise compared to my other fans and I'm not using it currently. However, with you having 2x480 rads and push/pull, I dont think that any fan is going to provide a noticable difference in performance. I can't really imagine what 16 high speed vardars sound like though!

Could the pumps be running at different speeds due to different amounts of restriction in the seperate loops? and are you using one on the cpu header and the other on the cpu2 (opt) header or using a splitter off of one header?

OddsCrazyStuff · December 20, 2015

http://www.xtremerigs.net/2015/02/11/radiator-round-2015/5/

as far as I can tell (these are the 360 versions, not 480) but the xtx at least is a great performer all across the rpm spectrum. I'd like to think that EK's fans would perform well on their own rads but I dont know to be honest. I have one 1800? rpm vardar and wasn't too impressed with its performance/noise compared to my other fans and I'm not using it currently. However, with you having 2x480 rads and push/pull, I dont think that any fan is going to provide a noticable difference in performance. I can't really imagine what 16 high speed vardars sound like though!

Could the pumps be running at different speeds due to different amounts of restriction in the seperate loops? and are you using one on the cpu header and the other on the cpu2 (opt) header or using a splitter off of one header?

The strange thing is that my motherboard wont show me the speed of pump 2, cpu2 opt, but since its the gpu loop, so should it be less restrict gives its only 1 block and 2 radiators (for sli later) in it. Even when the motherboard pushes it to 100% speed, so is pump 2 slower. My guess is that I manage to do something when I sleeved it or my motherboard is a bit broken (evidence by the 100+ sensor).

The Vardar fans are nice and quiet at there low speed, even with all 31 of them. They are noisy at high speed, but I choose the ER model, since it could go down to 500RPM, while still having high speed available.

0ld_Chicken · December 21, 2015

The strange thing is that my motherboard wont show me the speed of pump 2, cpu2 opt, but since its the gpu loop, so should it be less restrict gives its only 1 block and 2 radiators (for sli later) in it. Even when the motherboard pushes it to 100% speed, so is pump 2 slower. My guess is that I manage to do something when I sleeved it or my motherboard is a bit broken (evidence by the 100+ sensor).

The Vardar fans are nice and quiet at there low speed, even with all 31 of them. They are noisy at high speed, but I choose the ER model, since it could go down to 500RPM, while still having high speed available.

I think that a lot of motherboards show odd temperatures with some of the monitoring software. My new z97 classified shows a constant 58°c temperature in speedfan and nowhere else, not sure what it is supposed to be for but I'm not the least bit concerned. It stays at 58°c from the second I can get speedfan open and it will not go up or down no matter what kind of stress or airflow I run through it. My last mobo (z97-a) had a couple of temps that varied wildly from 0°c to 100°c and I just had to shut those temps off from being monitored.

Can you just move the GPU pump to a totally different fan header?

Does that gpu loop pump still change speed? or does it just not report the RPM's anymore?

Benji_w · December 21, 2015

How much does flow rate impact temperature?

My EK D5 PWM pumps (dual loop) are connected to the CPU header, but it seems they run 25-30% most of the time.

So I'm just wondering how much that effects the temperature.

Higher flow rate should lower temperatures, I would assume.

Actually... there's probably a sweet spot.

1 GPM is usually the sweet spot.

OddsCrazyStuff · December 21, 2015

1 GPM is usually the sweet spot.

And how do you calculate that?

I think that a lot of motherboards show odd temperatures with some of the monitoring software. My new z97 classified shows a constant 58°c temperature in speedfan and nowhere else, not sure what it is supposed to be for but I'm not the least bit concerned. It stays at 58°c from the second I can get speedfan open and it will not go up or down no matter what kind of stress or airflow I run through it. My last mobo (z97-a) had a couple of temps that varied wildly from 0°c to 100°c and I just had to shut those temps off from being monitored.

Can you just move the GPU pump to a totally different fan header?

Does that gpu loop pump still change speed? or does it just not report the RPM's anymore?

The problem is that I dont have another fan header. Too many fans overall.

But I tried switching them and then it could not find nether of the pumps, so guess cpu2 opt is broken and pump2 is broken... At least when it comes to signal.

So guess I need to get a new control system for the fans and pumps, like the Aquaro, then see if I need to change one or both pumps (ddc might be better then d5 for my loop).