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post #1 of 71 (permalink) Old 12-08-2019, 10:27 AM - Thread Starter
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new custom loop temp problems

ISSUE WAS SOLVED LOL THANKS. ,just recently switched over from a corsair h115i to a custom loop with 560mm gtr rad in push pull with 8 noctua 3000rpm fans, d5 pump, 924ml koolance reservoir and heatkiller iv pro block. everything mounted open air bench table. problem is my temps are averaging 11c higher than previously. and with this gear it is very unusual that a 280mm aio performed 11c colder than this current setup. I already tried re applying thermal paste and remounting the block. used kpx first mount and kryonaut 2nd time no difference. also ran the loop for 12 hours over night at max pump speed to bleed air. took about 1.8-2 liters of coolant to fill the loop. used 75% distilled water and 25% mayhems xt1 nuke. going to attach a pic of setup. any ideas on why this is running 11c hotter? ambient temp the same.
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Last edited by l Nuke l; 12-11-2019 at 03:32 PM.
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post #2 of 71 (permalink) Old 12-08-2019, 10:31 AM
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What are the temps on idle ? What are the temps when on full load ?

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post #3 of 71 (permalink) Old 12-08-2019, 11:46 AM
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Water inlet and outlet ports on the block correct?

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post #4 of 71 (permalink) Old 12-08-2019, 12:03 PM
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Try using an additional washers under the mounting springs for more mounting pressure.

But yes, making the flow is properly aligned with the inlet would be helpful.

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post #5 of 71 (permalink) Old 12-08-2019, 12:09 PM - Thread Starter
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Quote: Originally Posted by Turtle Rig View Post
What are the temps on idle ? What are the temps when on full load ?
Idle temps are 30c and 1 run of cinebench r15 max temp is 79c. where previously idle temps on the h115i were 27c and max temp in cinebench was 63c. thats a big difference if you asked me already remounted 4 times. twice with kpx and the other two times with kryonaut. and the last two remounts i made sure the heatkiller
was tightened all the way down. no difference. Dunno what else to do.
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post #6 of 71 (permalink) Old 12-08-2019, 12:11 PM - Thread Starter
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Quote: Originally Posted by Shawnb99 View Post
Water inlet and outlet ports on the block correct?
Koolance claims the reservoir has redundant ports. so i go out of the res into the d5pump with heatkiller top, out of the pump into the heatkiller block (the port with the arrow which i am assuming is the inlet) than out of the block into the rad and out of the rad back into the res.
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post #7 of 71 (permalink) Old 12-08-2019, 12:12 PM - Thread Starter
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Quote: Originally Posted by StAndrew View Post
Try using an additional washers under the mounting springs for more mounting pressure.

But yes, making the flow is properly aligned with the inlet would be helpful.
Gonna give that a shot.
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post #8 of 71 (permalink) Old 12-08-2019, 12:23 PM
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Did you check the cold plate to see if it was perfectly flat?

I'd be suspicious of air bubbles if it checked out ok. I raised my reservoir to the highest point in the loop, opened the vent on top and ran it that way for a while. Surprising how long it took to stop seeing bubbles come up through reservoir.
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post #9 of 71 (permalink) Old 12-08-2019, 12:27 PM
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...I had a similar scenario with a 5960X - custom loop was way more powerful (re. rad space, fans, cooling media volume),but temps were much worse than H150i Pro AIO. It turned out to be the IHS of the CPU, which - hard to believe - was both concave and convex at the same time...the worst I have ever seen. The AIO happened to have a better 'matching fit', but after some serious lapping of the CPU, it finally worked (with the custom setup much cooler than AIO at idle and under load).

With your testbench, you can try another 'trick', which is rotating the CPU block by 45 degrees, than 90 degrees, than 180 degrees and checking each time for idle and load temps. After that, another step would be the spin method > spinning the CPU on its IHS on a flat surface...it really shouldn't spin very much at all if it has a nice flat surface.

Finally, apart from correct loop sequence (in, out etc) mentioned above by others, also make sure that the custom CPU block does not have debris in it, either from a previous setup, or even via a new rad. Every single new rad I ever got had a lot of little black and brown bits in it from manufacturing...lot's of flushing in the bathtub until no more debris comes out...

Good luck
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post #10 of 71 (permalink) Old 12-08-2019, 12:30 PM
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Quote: Originally Posted by StAndrew View Post
Try using an additional washers under the mounting springs for more mounting pressure.

But yes, making the flow is properly aligned with the inlet would be helpful.
I might try that with my EK Block actually.

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