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[Official] XSPC Rasa 750 RS/RX120/240/360 Kit Club - Page 1129

post #11281 of 13773
The air in the rad is stubborn i had to turn mine upside down and tilt it back to get the last of the air out.
post #11282 of 13773
Quote:
Originally Posted by lsxtrkiller View Post

The air in the rad is stubborn i had to turn mine upside down and tilt it back to get the last of the air out.

^

Eventually the air in mine came out, but I could hear "gurgling" for a week after I put my loop together.
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post #11283 of 13773
Quote:
Originally Posted by Los Hog View Post

You dont have to crank down on the springs and the pump will make some noise because you might have air in the system try tilting the case to help remove it

Thanks, I actually tilted it around for a few minutes while leak testing. I stopped when I stopped hearing and seeing the air bubbles hit the reservoir. There's lots of little bubbles stuck to the sides of the reservoir, kinda looks like a carbonated soda. There's also a couple of slightly larger bubbles hanging out just below the acrylic rounded guard that sits right above the intake. I may have to turn the thing upside down to get those out. No extreme tilting seems to work!
Quote:
Originally Posted by lsxtrkiller View Post

From my experience while I personally do not have ap15s installed yet, however my friends computer I just built for him is packing ap15s and a rs360 kit and the ap15s are nearly silent and the pump is louder then then fans. After I got my 240 kit I did some reading and the pumps really do seem to be hit and miss with noise concerned... on that note a pump that is making more noise then another has generally been proven to be pumping just fine other then the noise of course, if its bothering you xspc will take it back if u make them a video, I however found the noise to be of little concern and I have my i7 2600k at 4.5gz and Im only maxing now in the high 40c range after 10 hrs of blending in prime 95 with my rad fans on low (they too damn loud on high). That being said I was getting kinda high temps when I first installed but I discovered there was still quite a lot of air left in the rad, after an hour or so of tilting I got most of the air out and my temps dropped significantly. Also about the post with high temps you may also wana lift the block and make sure the TIM applied correctly, a line in the middle while a good method isnt fool proof, and it may have not spread correctly.

Thanks, I've heard other people say that AP-15s are silent as well, but that has never been the case for me. I don't know if I'm sensitive to their tone or my case just hits resonant frequency with them, but I think they're loud at full speed when mounted to anything, even with the silicone mounts. When I've run them outside the case, they seem quiet enough. I guess I probably just need to do a lot of tilting as my temps are 20c higher than yours at 1.360 vcore @4.8 on the 2700K. After that, I may pull the block and reseat if no improvement. I'd like to run the AP-15s a low as possible.
Quote:
Originally Posted by lsxtrkiller View Post

Also ambient temps are around 21c on average in my house this time of year.

That's about my ambients as well.
Quote:
Originally Posted by rdfloyd View Post

^
Eventually the air in mine came out, but I could hear "gurgling" for a week after I put my loop together.

Maybe I'm hearing gurgling.

Thanks everyone, + rep to all.
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post #11284 of 13773
Quote:
Originally Posted by breenemeister View Post

Thanks, I've heard other people say that AP-15s are silent as well, but that has never been the case for me. I don't know if I'm sensitive to their tone or my case just hits resonant frequency with them, but I think they're loud at full speed when mounted to anything, even with the silicone mounts.

Yeap, agree .. well either that or my 3 fans are broken. When attached to the RX360 even at slow speed they make this horrible whirring sound (by horrible I mean I can hear it .. it's almost like the sound when a HDD starts up but continuous) and when I raise the speed up they start making this whistling sound.

By themselves they appear nicer, no whirling or whistling sound .. it's just in the case attached to the rad.

I'm having trouble finding the static pressure stats for them but when I compare my Nexus Real Silent PWM for noise it's totally different, no whirring or whistling sounds. I just don't want to loose performance if they're THAT much better (the 3 AP-15s are by far the loudest things in my system).
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post #11285 of 13773
honestly unless you are doing hard core folding, or rendering sound shouldnt matter because the only other thing that should stress your CPU hard enough would be gaming and at that point the sound really doesnt make a difference.

Maybe you need a fan controller
post #11286 of 13773
I posted here a few days ago looking at water cooling a single 7970 and i5 750... Got thinking and how would a rx360 rad with a rx240 rad cool 2 EK blocks on 7970's and a xspc cpu block on my i5 750 @ 4.4 ghz. I am thinking I would have enough rad Surface to dissipate the heat, just is the XSPC X2O 750 Dual 5.25” Bay Reservoir Pump up to the challenge ? rolleyes.gif

Fitting all of this in or around a Antec 1200 is not ideal lol. I may just get a rx360 kit and water cool the cpu and wait till I can get a better water cooling case ( 800D .. ect ) smile.gif

Thanks guy's ! smile.gif
post #11287 of 13773
Quote:
Originally Posted by rdfloyd View Post

Sounds like cavitation. It'll go away after a while (mine did). Keep rotation your case around to speed up the process. I'd say give it a week and post back if it doesn't go away. XSPC was very quick to reply to me when I was having pump trouble. Most people on here got new pumps within a week (without having to return the old pumps) once theirs went bad.


So is the cavitation caused by air in the water that is coming out of solution when it hits the pump? I think my water still is pretty aerated, it would make sense to since every couple days a small bubble builds up under the plexi pump shield. Temps are great so far, <55c on an FX-8150 @4.8GHz
post #11288 of 13773
Quote:
Originally Posted by pirates712 View Post

So is the cavitation caused by air in the water that is coming out of solution when it hits the pump? I think my water still is pretty aerated, it would make sense to since every couple days a small bubble builds up under the plexi pump shield. Temps are great so far, <55c on an FX-8150 @4.8GHz

I saw an excellent GIF image on here explaining cavitation. The best I could find was this. I'm pretty sure that discharge cavitation is the cause for the "rattle" that you hear. I don't study fluid dynamics until next Fall, so that's the limit of my knowledge.
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post #11289 of 13773
I'm just wondering why it's cavitating. Shouldn't it not cavitate?

btw, what major do you study fluids for? I'm studying computer engineering.
post #11290 of 13773
Quote:
Originally Posted by pirates712 View Post

I'm just wondering why it's cavitating. Shouldn't it not cavitate?
btw, what major do you study fluids for? I'm studying computer engineering.

It shouldn't, but air gets trapped in the pump causing the cavitation. If you run the pump for long enough, most of the larger air bubbles will be pushed out. The only real way to get rid of them is to start and stop the pump until all of the air is out.

Studying Applied Physics with an engineering track. I would love to study computer engineering, but our computer science department is junk and totally theoretical.
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