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[Official] Antec Kühler H2O 620 & 920 Owners Club - Page 134

Poll Results: Which Antec cooler do you own?

 
  • 54% (150)
    Antec Kühler H2O 620
  • 45% (127)
    Antec Kühler H2O 920
277 Total Votes  
post #1331 of 6023
On the 620, the fan is controlled by the motherboard I'm pretty sure. So yes if you have it to auto or you set a target temp and fan speed, the fan will ramp upas CPU heats up. That sounds normal, but the pump should be on a "Full on" or "On" setting or plugged in the the PWR_Fan header if it can reach. usually that one is always on. Really why I feel something is up, is the grinding.

I built a system for a friend and he used a 620. It sounded very quiet to me while I had it overnight for overclocking and stress testing. Especially the pump.

If you really want to hear the pump and all the resonances it makes, place your tower on your desk and place your ear over the back of the CPU socket on the case. You can place some of your head on the case and feel the pump work. Weird but it works. It should be humming, not clicking or grinding.
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post #1332 of 6023
The fan can plug into the pump and the pump is meant to change the fan speed depending on the liquid temperature. The fan is only a 2 pin, so I don't think my mobo would control fan speed if it was plugged into the cpu fan header, as I think it can only control fan speed via pwm if the smart target is enabled.
For the time being I've plugged the fan into a separate header and set it to run at 50% in the bios. I can actually hear myself think now and temps are only a few degrees higher.
The grinding has got pretty bad now, although it was slightly better when I turned my pc upside down. So if I have time I might rotate the pump 180 degrees.
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post #1333 of 6023
I'll make a video of mine. Maybe that 'll help. I pretty sure it's the correct working sound.



It may sound a little like the other video someone posted but it is NOT the same. smile.gif

Easily compare with this (BAD sound):


Edited by adi518 - 1/20/12 at 10:34am
post #1334 of 6023
I haven't got anything to take a video with. The noise seems to come and go. It's either silent, quiet grinding or really loud grinding.
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post #1335 of 6023
RMA it.
post #1336 of 6023
I have messaged the place I bought it from, but they test everything and if they don't hear the noise and say nothings wrong I'll get charged quite a lot of money. This could happen as the noise isn't always there.
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post #1337 of 6023
Mine sounds like that sometimes too, but it seems to be fine. It comes and goes I know this because, at first I'd get my ear right up in there like a nosy neighbor. The way I see it, is if it goes just like a fan could my CPU will hit TjMAX and shut down and then I'll RMA it, but till then it's moot. Some exact same model HDD's make more noise than others. I would never inconvenience myself by RMA'ing a noisier HDD (of course there could always be an exception to the policy). I'm just saying.
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post #1338 of 6023
The grinding noise is really loud though, so it gets very irritating when I'm trying to concentrate. If I end up RMA'ing it I might just try to get a refund and try something else, as knowing my luck I'll probably get a third faulty one.
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post #1339 of 6023
Quote:
Originally Posted by bmgjet View Post

Have had a antec 620 for a while, Recently upgraded it to a antec 920.
The 920 was only 2C better then my 620 which had 2 fans in push/pull and lapped.
So I lapped the 920 and now its 4C better.
Any way here it is.
2X 620's cooling my gfx cards.
1X 920 cooling my cpu.
700

Nice. So how did you go about lapping the 920? Did you have to take it apart first? Did you do it "normally" by moving the pump across the sandpaper/glass plate or did you did you have to keep the pump stationary and move the glass plate instead? I've recently gone from a push/pull 620 to a 920 myself. My cpu is lapped but the 620+920 are quite convex and I probably won't be able to leave well alone and have to start tinkering again...
post #1340 of 6023
Exactly the same way I did the 620s.
wet 1000, 1200, 2000
soapy 2000,2200

I taped the radiator and cords on to my arm then did it on a mirror moving the block.
Left it fully assembled.

The 620's were a lot worse and they were concave.
The 920 wasnt so bad but it was still a bit convex just off the center of it. Only took about 100 passes each direction with the 1000 grit to get it sanding all of the block evenly.
Where the 620s took at least 500 passes. Then just did 50 passes each direction with the 1200 and 2000 wet.
25 passes with the 2000 soapy and 10 passes with the 2200 very soapy

Then to clean it up I just dunked the coper bit only into some water and air compressed it dry. Then finished up by cleaning with iso wipes to remove any traces or oil from the air compressor before reinstalling it.


I thought about pulling it apart but Antec said id lose my warranty then where with lapping it. It will be fine as long as its not a nasty excessive job and it didn't cause it to fail by stressing the pipes or attachments.

What kind of drop did just lapping the CPU do, I need to find another 4-5C less to be able to run 5ghz 24/7 and not worry about temps during hot days.
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