The Hum...

Greebo · 14 Oct 2016 at 10:09

Evil_Monkey said:
Yes it is a pwm pump. Tried altering the speed via software but it doesn't sound to be having any effect. I'll try manually adjusting it next.

I assume its set to 2 but it could also be 5... Not sure. Hard to reach with a screwdriver in its current position.

http://imgur.com/a/6idkO

Look like 5. Turn it anti clockwise. if it only moves so far it was on 2. If you can move the bit which points to 5 all the way round to 2 then it wasnt.

Evil_Monkey · 14 Oct 2016 at 10:21

String said:
I don't think that's PWM and yes it looks to be at 5, which will explain the noise.

I'm an idiot. Problem solved.

I had tried adjusting pump speed but I did it via software which clearly wasn't working.

I looked at the pump setting on the pump before installation and assumed it was set to 2, but it was in fact 5.

Now at 2 and the damn thing runs almost silent.

Thanks for the input everyone.

Dirk Diggler · 14 Oct 2016 at 10:30

Evil_Monkey said:
I'm an idiot. Problem solved.

I had tried adjusting pump speed but I did it via software which clearly wasn't working.

I looked at the pump setting on the pump before installation and assumed it was set to 2, but it was in fact 5.

Now at 2 and the damn thing runs almost silent.

Thanks for the input everyone.

You're welcome. Glad you got it sorted.

Greebo · 14 Oct 2016 at 12:15

WHy does your water bubbles not even move in reservoir in your vid though?

Evil_Monkey · 14 Oct 2016 at 15:17

Greebo said:
WHy does your water bubbles not even move in reservoir in your vid though?

I'm assuming the water is flowing the most through the bottom of the reservoir which is why there are no bubbles there.

They've only stuck around higher up the res. The water itself flies through the loop (not surprisingly as it was on full whack!).

These are my temps playing gta5 (red = cpu core 1 and green = gpu).

Seems fine as far as I can tell:
http://imgur.com/a/YfXZh

CPU's a little hotter than I was hoping on stock but not exactly sure what's considered normal for an i7. Was running an AMD 8320 previously.

Greebo · 14 Oct 2016 at 16:24

if thats under load its fine. They take a lot of cooling.

Evil_Monkey · 14 Oct 2016 at 17:31

Greebo said:
if thats under load its fine. They take a lot of cooling.

Yeah, get similar temps on Cinibench so it doesn't get much hotter. Will need to re-run now the pump's not on setting 5 but I'm not seeing any massive difference at the mo.

Dirk Diggler · 14 Oct 2016 at 17:34

Evil_Monkey said:
Yeah, get similar temps on Cinibench so it doesn't get much hotter. Will need to re-run now the pump's not on setting 5 but I'm not seeing any massive difference at the mo.

Pump speed matters very little in my experience.

Greebo · 14 Oct 2016 at 17:50

String said:
Pump speed matters very little in my experience.

It only matters if trying to eek out the very last few Mhz from your cpu or gpu.

difference between 2 and 5 on mine is about 2 to 3 degrees under load.

But when you are at 31C, does it matter?

Dirk Diggler · 14 Oct 2016 at 17:58

Greebo said:
It only matters if trying to eek out the very last few Mhz from your cpu or gpu.

difference between 2 and 5 on mine is about 2 to 3 degrees under load.

But when you are at 31C, does it matter?

Agreed. I've seen bigger gains by increasing radiator fan speed.

Evil_Monkey · 14 Oct 2016 at 22:10

Makes sense, I can't see how pump speed would matter much, true it spends more time heating up, but it also spends more time cooling off in the radiators...

On another note it's very weird seeing the GPU at <50.c in a game when it's whisper quiet. Beats the hell out of the 90.c I used to get with my 7970 on air. Got to love water cooling.

Dirk Diggler · 14 Oct 2016 at 23:04

Evil_Monkey said:
On another note it's very weird seeing the GPU at <50.c in a game when it's whisper quiet. Beats the hell out of the 90.c I used to get with my 7970 on air. Got to love water cooling.

Yea, it's definitely worth the time and effort and dare I say it, the cost. I've got 2 * 980ti and an overclocked chip and its whisper quiet at full pelt, even after a couple of hours. I had it all on air and the heat and noise was unbearable.

Greebo · 14 Oct 2016 at 23:13

Agreed. Wtercoolinh, if doing right, isnt easy or cheap but my system in "quiet" mode with pump on level 2, fans running at 350 rpm keeps my titan under 40C and my cpu under 60C which is fine for gaming.

rack up the fans to 750 rpm and the titan drops to 31C