Loop temps seem okay?

Snookums · 25 Dec 2015 at 21:50

Just finished building my first loop today, one slight issue with one of the fittings leaking when at a certain angle, gonna have to order a new one ASAP. Other than that all seems good.

ATM it is just my cpu on 2 240mm rad, rans running at 0.75 pwm/degree and the pump is at 2 pwm/degree load temps whilst running prime are around 61 and idle temps 48. Do these seem right? They seem a little high

My 2700k is running at 4.5 can't remember volts off the top of my head but one air I was hitting 78 at load the cooler was a raijintek themis.

Edit: Seems my pump is running at 1200 rpm, no matter what i do it wont change, but i had it at 100% when filling the loop, any ideas?

Pump is an EK 140 D5 Revo PWM

Disco_P · 25 Dec 2015 at 23:26

Without specific specs they seem fine. My only concern is that the load and idle temps are so close together.

As a Christmas present I have been running prime on my 2550K at 4.6Ghz 1.39V all day. Water temps have stabilised at 30C however the CPU runs at 70C. AFAIK these deltas are about right as the heatspreader on the CPU is actually fairly inefficient.

For the pump - what model is it? Personally I run my D5 at the lowest with a 240mm, 360mm and 2 blocks. The only difference turning it up makes is that the water temps become more even throughout the loop.

Snookums · 25 Dec 2015 at 23:38

I did add the pump model to the OP

I've taken the OC off for now whilst I test, I'm getting 33 idle, 45 load, with the fans on highest PWM (2.5) this is really quite load but the pump even when setting it to 2.5 pwm in bios stays at 1200 rpm no matter what.

Disco_P · 27 Dec 2015 at 11:40

At minimum pump and fan (FQ121WC at 600rpm) speeds I get about the same temps at stock on my 2550K. Case is a H440 so horrible airflow.

Snookums · 27 Dec 2015 at 13:35

Maybe I just had too high hopes for my temps. Felt like 2 240 rads would yield much better temps. Oh well better and more silent than before though. Might invest in better rad fans

Disco_P · 27 Dec 2015 at 15:23

What fans are you using at the moment?

I'd definitely recommend grabbing one of the xspc temp probes that use the g1/4 fitting. Mine is plugged into my res so I know what temp water my CPU is recieving.

At stock, watercooling with lots of rads won't seem worth it as even if you keep water temps at ambient then the CPU will still be at 60C+. But you start throwing lots of volts at it and keep fans nice and slow and you'll see that temps won't get much higher as the water is still being kept very close to ambient.

Snookums · 27 Dec 2015 at 18:23

At the minute I only have akasa piranha in, they seem to be pulling a decent amount of air in. My front rad has quite high FPI.

I'll buy a few things I want to add next time I go in the loop

tyler_jrb · 27 Dec 2015 at 20:19

seems fine only thing i can say is the pump is running a little slow. 1200rpm is lower than setting 1. i beleive the max for these pumps is around 5000rpm so id certainly step that up a bit but it would only really make a couple of degrees difference. Id say around 2-2.5k rpm. You should be able to put the pumps PWM header into the CPU header or CPU OPT header and control the speed in the bios.

But as ive posted before the only thing really thats going to help is cooler water temps. For a CPU block there is a lot of material in the way before the die to cool it down so really there is only so much cooling it can do. As you have [water-cooling plate-TIM-IHS-TIM-Die]. A GPU for example is just [water-Cooling plate-die]. So that can cool much more efficiently.

OracIe · 27 Dec 2015 at 22:06

Your load temps seem OK to me but your idle seems a little on the high side...I would expect at least 5~10C cooler depending on ambient.

Snookums · 27 Dec 2015 at 23:30

My idle temps are what was worrying me most, But I've put my overclock back up to 4.5 and my idle temps havent changed and neither have my load temps. Which I'm happy about.