Water cooling pump

nitram1962 · Nov 30, 2016

Hi i have built a rig with watercooling but it seems to run hotter than when it was air cooling i.e idling at 50deg with i5 4670k haswell, any way my question is would i get better cooling with my pump running fast or slow? thanks.

n0ns3ns3 · Nov 30, 2016

not much. for example running D5 pump beyond 60% is pointless from cooling performance perspective.
rad surface is the most important.
what components you used to build the loop ?

nitram1962 · Nov 30, 2016

n0ns3ns3 :

Hi thanks for reply i am using a d5 pump my rad is 240mm long and 46mm thick with 2 x 120 fans behind blowing through

n0ns3ns3 · Nov 30, 2016

there are two major D5 variants.
one is Vario with manual speed control and PWM.
for a single rad + CPU and GPU blocks, ~2500 RPM (around 2 on manual and 40% on PWM) is usually enough.

nitram1962 · Dec 1, 2016

n0ns3ns3 :

I am using the d5 with the variable speed dial on the bottom.

n0ns3ns3 · Dec 1, 2016

same as mine. make it 2 or 3. really no need more.

nitram1962 · Dec 1, 2016

n0ns3ns3 :

Done that but still running to warm, cant understand why, the tubing doesnt seem to feel that warm

n0ns3ns3 · Dec 1, 2016

well ... are you sure you mounted the CPU block correctly ?
like you can to put the pump on max speed, no problem just to be sure. but most probably you have the problem somewhere else because even with very slow flow, the idle temperature of CPU should be close to ambient.

nitram1962 · Dec 2, 2016

n0ns3ns3 :

I've re-seated the block twice because that was my first thought, it seems ok but does rise in temp very quickly when i prime 95 it.
The block says it's compatible with 1150 socket and i've asked the supplier and he showed me a pick of his rig using the same block.

n0ns3ns3 · Dec 2, 2016

prime95, especially small FFT is causing unrealistic load on your CPU.
my 4770K gets to ~85C.
On idle, the CPU temp is hoovering around 30 (1.295v constant).
what is your CPU block ?

nitram1962 · Dec 2, 2016

n0ns3ns3 :

I also used a program called burn in which is not so harsh and that still went passed the 72 deg mark, the block is cz horde Intel water block

n0ns3ns3 · Dec 2, 2016

well, it can be many things, but flow is not the one to blame. Except the case where it is blocked buy something.
If you tried to set the pump on max and it didn't change anything, you really should look elsewhere. Because D5 on 3 is way more than enough for a single rad and single block. On 5 it moves insane amount of liquid.
it can be something with the CPU block, it can be that the radiator is not doing good job or may be some of the rad passes are blocked.

nitram1962 · Dec 2, 2016

n0ns3ns3 :

Thanks for reply this is all a new build as far as the water cooling goes so cant see it being a blocked rad the only thing i can think of trying next is to put the fan on the bottom where the main flow of air is and if that doesn't work then in my opinion it must be the water block.

n0ns3ns3 · Dec 2, 2016

you can test the flow in the following way:
1. take your computer to bath or any other place where you can play with water
2. disconnect the PSU from MB, GPU, disks and whatever else, leave just the pump connected (fans can be connected too)
3. fill the loop
4. than disconnect whatever goes to the reservoir and connect another tube that goes to some large can/bucket of water (preferably a gallon).
5. Start the pump (short the green wire on 24pin psu connector with any black wire on the same connector).
your will see the flow. if it is the same as open tap, you are fine. good flow is about 1 gallon per minute.
As for your CPU block, i'm not familiar with this manufacturer. it might be that it's shitty, may be it is defective in some way and does not make good contact with CPU or may be it is not mounted correctly.
The radiator can be blocked from manufacturing. I hope you flashed it with warm water before use as there is always some sh*t from manufacturing. it can block the micro channels in CPU or even passes within the rad. the way to find it is to take everything apart (including dissasemble of CPU block) and wash it.
if you will end up in buying new CPU block, check those kryos NEXT - i like the vision variant though it's a bit expensive:
https://shop.aquacomputer.de/index.php?cPath=7_11_12_2694&XTCsid=9lm5saia9vn4c3m9e0efljicjdqg90pa

nitram1962 · Dec 3, 2016

n0ns3ns3 :

you can test the flow in the following way:
1. take your computer to bath or any other place where you can play with water
2. disconnect the PSU from MB, GPU, disks and whatever else, leave just the pump connected (fans can be connected too)
3. fill the loop
4. than disconnect whatever goes to the reservoir and connect another tube that goes to some large can/bucket of water (preferably a gallon).
5. Start the pump (short the green wire on 24pin psu connector with any black wire on the same connector).
your will see the flow. if it is the same as open tap, you are fine. good flow is about 1 gallon per minute.
As for your CPU block, i'm not familiar with this manufacturer. it might be that it's shitty, may be it is defective in some way and does not make good contact with CPU or may be it is not mounted correctly.
The radiator can be blocked from manufacturing. I hope you flashed it with warm water before use as there is always some sh*t from manufacturing. it can block the micro channels in CPU or even passes within the rad. the way to find it is to take everything apart (including dissasemble of CPU block) and wash it.
if you will end up in buying new CPU block, check those kryos NEXT - i like the vision variant though it's a bit expensive:
https://shop.aquacomputer.de/index.php?cPath=7_11_12_2694&XTCsid=9lm5saia9vn4c3m9e0efljicjdqg90pa

Hi i did flush it out when i had it by filling it with water and shaking it then emptying out but nothing came out, i just done another test on the system with burnin test and from idling at 50deg it took 2mins 22secs to reach 72deg any thoughts?

n0ns3ns3 · Dec 3, 2016

72 is meaningless. If I start prime95 small FFT or linx test, the CPU will jump to 70+, but it will stay there.
It's safe to reach 90C. But 50 idle is way too much for i5. especially if you say that it was better with air cooler.
if you are sure there is a flow in the loop of at least gallon per minute, it can be bad (either defective or by design) CPU block.

nitram1962 · Dec 3, 2016

n0ns3ns3 :

72 is max temp as i understand it for what intel recommend for i5 4670k haswell, i think i will go back to stock cooler and scrap the water cool loop, but thanks for your help.

n0ns3ns3 · Dec 4, 2016

don't scrap it completelly.
you have excellent pump. Just get a good CPU block like EK Supremacy or the one i posted earlier whenever you can.
liquid cooling is superior, just much more expensive.
regarding the temp. 72C is the max package temp measured in lab between the IHS and cooler at 22C ambient. it's about 77C for cores and even then it's not an absolute max. in other words, you are fine hitting even over 77C for cores as long as it is not the constant temp for hours.

nitram1962 · Dec 5, 2016

n0ns3ns3 :

Shame i cant prove water block is faulty It cost me £40.00 is that cheap for a water block or is it worth me trying to get a refund?

n0ns3ns3 · Dec 5, 2016

you can if the block can not be mounted correctly or if the contact surface is not flat enough.
1. dismount the block, clean the CPU and block
2. put a dot of thermal paste on the center of the CPU, mount the block.
3. remove the block again and check how the paste is spread on both CPU and block. both should have no clean spots.
If you validate that it is mounting correctly, verify that the liquid is flowing through the block correctly (you should see no air pockets).
the block seems to be of modern design, yet not the most advanced. due to the presence of micro channels and obviously inlet and outlet, i'd try to mount it in different orientations.
the actual CPU die is vertically oriented rectangle beneath the IHS that is less (or about) 1CM wide.
So try the following orientations and check the temps:
1. inlet below outlet
2. inlet on the left
3. inlet on the right (should be similar to above)
4. inlet on top. might give different results from the step one due to the layout of CPU components. AFAIR, the GPU core is on top, than the cores 0 to 3 below it.
how to identify the inlet: i'm not sure what model you have, but if it is this one http://i.ebayimg.com/images/g/bPkAAOSwPcVVqava/s-l1600.jpg
the inlet is on the left. it's always the port that directs the liquid to the center.
It is very important to have the flow through the block in correct direction. My guess that orientation 1 will give the best results.
If you are not sure which port is which, post a pic of your block, will try to help.

nitram1962 · Dec 5, 2016

n0ns3ns3 :

you can if the block can not be mounted correctly or if the contact surface is not flat enough.
1. dismount the block, clean the CPU and block
2. put a dot of thermal paste on the center of the CPU, mount the block.
3. remove the block again and check how the paste is spread on both CPU and block. both should have no clean spots.
If you validate that it is mounting correctly, verify that the liquid is flowing through the block correctly (you should see no air pockets).
the block seems to be of modern design, yet not the most advanced. due to the presence of micro channels and obviously inlet and outlet, i'd try to mount it in different orientations.
the actual CPU die is vertically oriented rectangle beneath the IHS that is less (or about) 1CM wide.
So try the following orientations and check the temps:
1. inlet below outlet
2. inlet on the left
3. inlet on the right (should be similar to above)
4. inlet on top. might give different results from the step one due to the layout of CPU components. AFAIR, the GPU core is on top, than the cores 0 to 3 below it.
how to identify the inlet: i'm not sure what model you have, but if it is this one http://i.ebayimg.com/images/g/bPkAAOSwPcVVqava/s-l1600.jpg
the inlet is on the left. it's always the port that directs the liquid to the center.
It is very important to have the flow through the block in correct direction. My guess that orientation 1 will give the best results.
If you are not sure which port is which, post a pic of your block, will try to help.

Hi the link you put in the post is the same block that i have, if you want or need me to post a pic of my rig i can do that.

n0ns3ns3 · Dec 6, 2016

Sure, pictures always help to understand better.
Just do the thermal paste spread test + different orientation. also make sure that liquid goes into the CPU inlet port.
It is time consuming (would take me 3-4 hours to do that) but totally worth to try.

nitram1962 · Dec 6, 2016

n0ns3ns3 :

nitram1962 · Dec 6, 2016

n0ns3ns3 :

This is a pic of my rig hope this is a bit more explanatory.

n0ns3ns3 · Dec 6, 2016

Looks cool

I see the problem to rotate the block with all those bends. Really nice work. I don't see them in the pic, I just hope the fans are attached to the rad

Do you have a piece of flex tube to do the rotation of the CPU block ? (90 degree counter clockwise)

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