Advice needed

Jimbo0115

Jimbo0115

Jimbo0115

Associate
Joined
27 Dec 2020
Posts
3
Hello everyone first post in the forum I am completely new to water cooling would anyone advise me on a few things.

What should the flow rate be though my loop? Iv tried to look online for answers and can't seem to find any solid information. I am running 3 ek 360 rads 60 mm bottom. 40mm top. 30mm side. With the ek lian li o11 xl distro with a d5 pump. Iv got an ek water block on gpu and a ek mono block on cpu. My gpu is 3090 and cpu is 5950x. Think the Monoblock is the most restrictive part of the build my tubing is 12 mm acrylic if I have my d5 pump running at 70% speed the flow is 110 but if turn it down to 50% the flow is 60 I don't really understand what speed the pump should run at. Gaming today for around 5 hours with noctua fans running at 1000rpm and pump at 70% what highest temperature on cpu was 73c and gpu was 56c the water temperature went upto 45c is this an ok temp for the liquid to be its been a warm day and my pc has been on all day. Sorry if I sound silly asking such simple questions.Any help or suggestions would be much appreciated.
 
45c water is definitely on the warmer side. I think that common wisdom is that you want half a gallon per minute or more. I assume that your figure of 110 is litres per hour, which is in that range. Ideally run tests at different speeds on the same day and see what the water temp stabilises at.

Personally I have my pump at 100 percent as I can't really hear it anyway. The computer is behind the TV so I also run the fans at 1,400 and it's inaudible unless I have sound turned down very low. My water temp is generally low 30s with GPU low 40s or high 30s. But admittedly I'm just being OCD. The stability improvements are there, but not gonna get you more than a few MHz.
 
Think about water flow
As how much time water spend in the water block and radiator
With low flow the water will spend more time in the water block and and become hotter
Same applies with radiators but the other way around
The advice is to run the pump as fast as you can and keep it silent for maximum cooling
Low RPM on the pump will increase temperature on components
 
https://www.youtube.com/watch?v=MFoWyYGqBxE

flowrate has little effect. As said above, the water spends the same percentage of time in each component irrelevant of flow rate. So long as the flow isn't too slow, any rate you like. Too fast is not a problem.

If I were you, I'd turn up the pump until you can hear it, then down a little til you can't.

45C water temp would worry me a little. I'd want that well below 40.
 
Jimbo0115 said:
Hello everyone first post in the forum I am completely new to water cooling would anyone advise me on a few things.

What should the flow rate be though my loop? Iv tried to look online for answers and can't seem to find any solid information. I am running 3 ek 360 rads 60 mm bottom. 40mm top. 30mm side. With the ek lian li o11 xl distro with a d5 pump. Iv got an ek water block on gpu and a ek mono block on cpu. My gpu is 3090 and cpu is 5950x. Think the Monoblock is the most restrictive part of the build my tubing is 12 mm acrylic if I have my d5 pump running at 70% speed the flow is 110 but if turn it down to 50% the flow is 60 I don't really understand what speed the pump should run at. Gaming today for around 5 hours with noctua fans running at 1000rpm and pump at 70% what highest temperature on cpu was 73c and gpu was 56c the water temperature went upto 45c is this an ok temp for the liquid to be its been a warm day and my pc has been on all day. Sorry if I sound silly asking such simple questions.Any help or suggestions would be much appreciated.
Click to expand...

For your to compare 2 x 30mm magicool 360 rads 1 x 60mm EK 360 rad CPU i7 6950x idling, RTX3090FE mining 24/7 for the last 48 hours accept for when Naval Action was running but I didn't sop the mining just left it going, D5 x-res combo at full speed (cant hear it) fans at 1680 which are audible but not annoyingly so.
CPU 25c GPU 35c mem junction 72c water temp 28.3c flow rate 231Lph

temps were a fair bit higher when my flow rate was lower due to a gunked cpu block jet plate
 
Flow rate does have some degree of usefulness, mainly as an indicator of how well your loop is flowing. It's often the first sign that your blocks are getting clogged by particles and need a clean-out.
As a rough value, my loop at 5000rpm has a flow rate of 249lph.
What are you using to measure your flow rate?

Also, as I understand it, the 59xx series tends to run pretty hot anyway. O/Ced to 4.6GHz, my 5960X runs around 45-50ºC just on idle... and yet even under load I rarely see water temps over 35ºC.
 
Something not quite right.
Maybe the order you're running your loop may help optimize your rad performance. Mine goes pump to bottom XE as intake, 3090, top PE as exhaust, CPU, side PE as intake. Loop order doesn't matter much, but having the biggest offender (GPU) heat exhausting, without affecting the air cooling the other rads is a must. The top exhaust most of the heat, and the side and bottom drop the temperature even more.
Fan speed, specially for the XE would be night and day. Not so much on the slimmer rads.
Was against push and pull, but worked a treat on the XE.
Other thing is Monoblock. Tried in the past, but adding the heat from the VRM which would be fine with reasonable airflow would only impact for no reason your temps.
Getting a maximum delta of 6C, usually 5ish during games.
 
You must log in or register to reply here.
Back
Top Bottom