Need more flow, maybe?

[airborne spoon]

I just finished my newest build and have some concerns.

I x EK DDC 3.2 pump

1x 240 rad

1x 360 rad

1x Bitspower CPU block 3700x

1x aquacool GPU block RX5700

 

I have a little spinner flowmeter and it's spinning kinda slow.  I'm idling at 45c and 75c under load CPU, the GPU is idle 30c load 70

 

My pump is PWM but the speed doesn't change from plugged in or not. (Unplugged it should be 100%, plugged should be whatever the fan headder tells it, 50%). I've had the pumps for about 3 years in my old build and the flowmeter was going full tilt and the pump was killing it at 100% no PWM connection. But it only had a block for a RX480 and a 240 rad that's it.

 

I have another pump of the same model and obv I could drain the loop and install that one and see if that moved water any faster, which I'll prob do anyway.

 

But if it is the same could I make a dual pump like this... out on one going directly to the in on the other? Or do they need some separation in different parts of the line?

 

Also EK sells a dual pump using 2 of the ones I have with just a different top block so they are connected as 1 pump. Is there anyone that sells a block like that to convert 2 into one? Pic is what I'm talking about.

[airborne spoon]

I swapped out my other pump and there was no change to the flow speed.

So I figure I now need to rig up a homemade dual pump going in order. pump>pump>block>rad

 

[Deli]

A single DDC pump should be more than enough for only two rads and two cold blocks. Unless something is restricting the flow.

[airborne spoon]

11 minutes ago, Deli said:

A single DDC pump should be more than enough for only two rads and two cold blocks. Unless something is restricting the flow.

Yeah that was my thinking, but here I am

 

I have a bunch bends in the tubing but those bends move water easier than 90° fittings do so that shouldn't be a issue.

I'm running 10mm ID tubing.

 

 

[Deli]

46 minutes ago, airborne spoon said:

Yeah that was my thinking, but here I am

 

I have a bunch bends in the tubing but those bends move water easier than 90° fittings do so that shouldn't be a issue.

I'm running 10mm ID tubing.

I have an SFF build now. But my old rig is just ATX with two rads and two cold blocks like yours. I set the pump at only 2500rpm and that's enough. I tried max speed but made no difference in temp.

 

Your 5700XT run at 70C! That's hot. It should be 50C or below with water-cooling. The CPU is sort of OK, although it's on the high side given the rad space you have. Water flow rate or air flow is the culprit?

 

[Deli]

If the outlet port of the CPU or GPU is hot to touch. It's an indication the water flow rate is too low. It should be only slightly warm, like below 40C.

[airborne spoon]

18 minutes ago, Deli said:

 

Your 5700XT run at 70C! That's hot. It should be 50C or below with water-cooling. The CPU is sort of OK, although it's on the high side given the rad space you have. Water flow rate or air flow is the culprit?

 

I should clarify the temp. The GPU memory is at 70, it ran 98 with the stock air cooler. The GPU temp is 50, it ran around 75 with air.

So the water is definitely lowering temps so I'm thinking I need more water speed

[airborne spoon]

Would this work? I mean all D5 pumps are basically the same so if I take my 2 EK pumps and remove the clear acrylic they look like they'll bolt right up to this so I can make a dual pump.

 

Logically this will speed up my flow, right?

 

https://www.amazon.com/gp/aw/d/B07MJ6YZTT?ref=ppx_pt2_mob_b_prod_image

[Deli]

4 minutes ago, airborne spoon said:

Would this work? I mean all D5 pumps are basically the same so if I take my 2 EK pumps and remove the clear acrylic they look like they'll bolt right up to this so I can make a dual pump.

 

Logically this will speed up my flow, right?

 

https://www.amazon.com/gp/aw/d/B07MJ6YZTT?ref=ppx_pt2_mob_b_prod_image

Do you have DDC or D5 pump?

[airborne spoon]

4 minutes ago, Deli said:

Do you have DDC or D5 pump?

Yeah both the ones I have are the EK DDC 3.2

[For Science!]

6 hours ago, airborne spoon said:

Yeah both the ones I have are the EK DDC 3.2

Was the flow meter always in this configuration (old vs current)? with the flow going against gravity at the point of the flowmeter? IIRC as stupid as to may sound, I think the orientation of the flowmeter had a impact on how much it was able to rotate.

[airborne spoon]

7 hours ago, For Science! said:

Was the flow meter always in this configuration (old vs current)? with the flow going against gravity at the point of the flowmeter? IIRC as stupid as to may sound, I think the orientation of the flowmeter had a impact on how much it was able to rotate.

in my previous build the thing was facing the same direction and would speed up then the fans kicked up. orientation shouldn't logically have any effect on it as the water is still moving at the same speed regardless.

[bowrilla]

Thing with flow is: as long as there is flow (even a little) the system works. The differences between low and high flow loops are on the verge of measuring error. Only at the point of barely any "measurable" flow you will have some higher temps but only on the level of maybe ~5K. Those spinny flow indicators are no measuring instruments. I recommend one of der8auer's latest videos in this regard: https://www.youtube.com/watch?v=MFoWyYGqBxE

 

If that spinny indicator moves noticeably then you have enough flow. You should be more than fine at normal to low-mid revs. Just stay clear of the lowest possible rpm of the pump. 

 

One EK DDC 3.2 PWM 12V pump pushes up to 5.2m head pressure and shifts up to 1000L/h. That's a lot. There is no need for dual pumps for a regular loop.

[airborne spoon]

20 minutes ago, bowrilla said:

If that spinny indicator moves noticeably then you have enough flow. You should be more than fine at normal to low-mid revs. Just stay clear of the lowest possible rpm of the pump. 

 

One EK DDC 3.2 PWM 12V pump pushes up to 5.2m head pressure and shifts up to 1000L/h. That's a lot. There is no need for dual pumps for a regular loop.

The pump is always running at a constant speed of 100% when I plug in the PWM plug the speed does not change nor the noise nor the vibration of the pump.