AIO Cooling underperforming

Guarana [BAWLS]

[H]ard|Gawd
Joined
Oct 3, 2001
Messages
1,816
I've got a 6700k (Still stock, after BIOS flash and complete gutting/cleaning/rebuild) sitting under a Corsair H1156i 280mm Cooler.

Arctic P14 PWM fans on them. (Good SP fans)

If I stress test the CPU, I can thermal throttle it, at stock speeds. Which is obviously not what a 280mm AIO should do.

Block is screwed down tight, I put on fresh paste before rebuilding. I even put washers on the backplate, due to the looseness of it.

I know it's making decent contact, because at Idle, it's at most 1-2C over Ambient. (Granted Ambient is about 31C right now, but still. I shouldn't be hitting 100C at stock.)

Any thoughts?

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wadec22

2[H]4U
Joined
Jul 26, 2005
Messages
3,840
1-2C over ambient at idle does not necessarily indicate good contact. unfortunately, I about guarantee it's a contact issue. i just got done re-building/cleaning/updating my rig. i had a similar situation with my corsair h105 on my gpu. idle and even light benches were pretty good (like user bench that only briefly stresses the gpu). then when i got into gaming with my friends last night, temps spiked about 10C higher than they had previously. even though they were pretty good, i pulled it all apart, re-applied paste, re-seated - all is well again. almost always a contact issue with AIO, and always irritating as hell.
 

Guarana [BAWLS]

[H]ard|Gawd
Joined
Oct 3, 2001
Messages
1,816
^^ that or air in the pump
if there's air, I can't do much about it in a corsair. womp womp.

1-2C over ambient at idle does not necessarily indicate good contact. unfortunately, I about guarantee it's a contact issue. i just got done re-building/cleaning/updating my rig. i had a similar situation with my corsair h105 on my gpu. idle and even light benches were pretty good (like user bench that only briefly stresses the gpu). then when i got into gaming with my friends last night, temps spiked about 10C higher than they had previously. even though they were pretty good, i pulled it all apart, re-applied paste, re-seated - all is well again. almost always a contact issue with AIO, and always irritating as hell.
Well, I can always remove and reapply. Time to try again.
 

Guarana [BAWLS]

[H]ard|Gawd
Joined
Oct 3, 2001
Messages
1,816
wadec22 pendragon1
Looks like you were right.

Removed the almost 2 dozen screws and nuts needed to get the block off. (I love this Phanteks Case, but OMFG does it have a lot of screws)
Paste contact looked really good when I removed it. Cleaned and reinstalled.
Got it down to around 80C. I suppose that's all I can ask, in a room that's over 30C right now, lol. (Yeah, custom curve, so at 70c the corsair goes to 100%)
 

somebrains

Gawd
Joined
Nov 10, 2013
Messages
1,008
I flipped my h115i so the tubes were at the bottom instead of on top.

I've also let the Mobo control my fan curve and left the pump 100%

Hit days I have to pull off the front of a define C bc it impacts airflow and any cooler ramps just a bit higher.
 

MaZa

2[H]4U
Joined
Sep 21, 2008
Messages
2,957
Also it is better to have AIO on the intake if possible. GPU's run hot and make the air inside the case really warm during gaming and that has a very negative effect on CPU temperatures. Other way around CPU has much smaller effect on the GPU temperatures.
 

freeagentt

Weaksauce
Joined
Dec 5, 2018
Messages
117
That's a natural caveat of using an AIO. You get ok CPU performance, but the rest of your system takes a hit. Just because of the airflow alone. I still took a hit using 120x38s which had all the SP and AF. 30c ambient, 80 load? Its up there.. but its probably closer to 40c in your case..
 
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