Slippery Waterblock?!!! Antec Kuhler 650

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Mohamed_Hussein

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Mar 19, 2016
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After I tried everything the temps are so high.

I first removed the waterblock and found that the paste wasn't enough. So I added more paste and the temps dropped to 40C idle / 65C load.
Then they started rising uo again, and by pressing down the pump the temps decreased real time! Then the waterblock slipped a bit under my hand and the temps rose even higher (I could even twist it a bit inside the bracket). The bracket is screwed to the max in my mobo and is rock solid still.

I'm confused. This 650 model has the pump head fixed into the bracket (unlike the 620) howcome I could twist and move it? Is it toouch thermal paste? Or just the pump got loose from the bracket? How can I keep it pressed down much more? I can't tighten the screwes anymore, they are already tight!
 
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weberdarren97

Glorious
Aug 10, 2015
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I thought the pump on that model was a turbine that's integrated into the fan... Either way, the waterblock is loose and applying pressure instantly lowers temperatures.

I know you said that you checked everything, but have you made sure that you're using the right screws? Many coolers use different types/lengths of screws for Intel than they do for AMD.
 
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Mohamed_Hussein

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Mar 19, 2016
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Oh I'm sorry, I meant the heatsink bot the pump .. my bad.
Yes the screws and the bracket are the LGA 1366 brackets and they are the same I used to mount this before. When I put it on my other Xeon orocessor it kept it under 23C idle, and I did not have any issues installing it!
 
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weberdarren97

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Aug 10, 2015
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Did the motherboard have any pads or spacers behind the socket that you may have removed when mounting the cooler? Not all boards have these. However, if your board did have these, they were there for a reason.
 
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Mohamed_Hussein

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Mar 19, 2016
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My motherboard is an Intel S5520SC. The backplates for this mobo are fixed and cannot be replaced. I didn't mess with them and I didn't remove the mobo to install the cooler.
I never touched that either way. The thing is, all I did was removing and putting back the coolers (switching places with both 620 and 650 for better airflow). The heat problem happened immediately and kept happening after several retries of mounting/dismounting.
 
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weberdarren97

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Aug 10, 2015
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I'm stumped.
 
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Mohamed_Hussein

Commendable
Mar 19, 2016
36
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1,530
Well it's worth mentioning that this particular model came with pre applied thermal compound. It was sticky and felt like thin rubber.
When I switched the coolers beteeen the processors I had to completely wipe it out and added Coolermaster compound instead. The latter is "creamy" and slippery. But this never caused an issue with the older 620. Can this be some sort of a cause?
 
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weberdarren97

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Aug 10, 2015
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Was it a thermal pad?

https://www.google.com/search?q=thermal+pads&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi0-bThjLbSAhWBeCYKHeAPBTkQ_AUICSgC&biw=1680&bih=957#imgrc=3hpPPM1TgBTdYM:
 
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weberdarren97

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Aug 10, 2015
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No problem.

Just as a heads up... If they ask some ridiculous price like over $10, moddiy.com carries high quality thermal pads without the price premium. Once you know the thickness, I can find you one that will work for you. Of course, if Antec will just send you another without charge, there's no need to spend money at moddiy.com.
 
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