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Water loop, never ending air pockets? SOLVED! - Page 2

post #11 of 68
Thread Starter 
Will do, thanks.

I'll switch it back to the stock H60 radiator tomorrow and see how it goes. The first time I switched back to the H60 it worked much better than the GT 240, but temps were still much higher than a stock H60. But, that was using a HUGE reservoir.

Just in case anyone is wondering, I'm using a total of maybe 4 feet of tubing. 2 feet per hose with a total of two hoses. The bottle I'm using for the reservoir is 16.9oz. All 1/4 inch tubing.


Edit:

Another random oddity. If I load prime and let the CPU get to around 48-50c, I can fill the exhaust hose on the block/pump and Its hot all the way to the radiator. The top tank (where the barbs are) is hot where the hose is, but the radiator is cold at any other location?

If I shake the radiator around and tilt it a few times, the rad instantly heats up to normal and temps drop dramatically. The only issue with this is, no air comes out. If I shake the radiator I cannot hear any sloshing. I've shook, tilted and tapped and no air comes out.
I can pretty much repeat that process over and over until I'm blue in the face, but no air ever comes out.
Edited by *ka24e* - 3/13/12 at 5:50am
post #12 of 68
Your problem is the thing called pressure... u get all those air bubbles when u start ur loop cause there is a pressure on tubings when water comes out of the pump, so tubing expands... than u have empty space left inside of ur loop. there is the same thing happening in a normal loop with res, when u start ur pump water level in res goes down even though it is a closed system.
I dont think u can have a loop without at least some kind of res or t line.

And i belive that h60 and other r filled with water under slight pressure to minimise the effect of tubing expansion due to pressure from the pump.
and about the rad... maybe there is a problem with it cause it shouldnt be cold like that... some kind of fault with the connection of channels inside of the rad?
Zeus
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Zeus
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post #13 of 68
Thread Starter 
Another update:

Spend almost the entire day trying countless combo's an setups, yet achieved absolutely nothing...

I first tried switching back to the 120 rad (stock H60) and temps were a little better than the GT 240. After that, I concluded that the pump must be the source of failure because that's the only component I haven't swapped out. So I went to Lowes and grabbed an 80GPH submersible pump and got back to work.
The pump was noticeably stronger than the H60 pump, and I was pretty sure that was the problem, however I quickly found out otherwise. The pump had great pressure, I saw no air bubbles yet NOTHING was hot while the CPU was running prime @ roughly 47-50c.

The hoses, rad, and res did not feel even luke warm yet the several programs are telling me my CPU is on its way to a melt down.

After that I said F it, and broke down the entire system. I removed the cold plate and pump on the H60 and found a good amount of... gunk. I cleaned everything with 91% alcohol. I also removed the pump rotor and the separator over the micro channels on the cold plate. Essentially, I turned the H60 pump into a water block only. After seeing the gunk built up inside, and removed the pump/separator I figured I was good to go. Yet again I was wrong.

I connected everything back up using the GT 240 and bleed the system. At idle the CPU sits at 34-36c @ 1.28vcore mind you, the stock vcore is 1.375. Once again, nothing was hot yet the CPU was practically on fire. So I switched to the stock H60 120 and gave it a go. This time, the hoses, rad and reservoir did get slightly warm, but nothing compared to the temp of the CPU. As soon as I put in under Prime, temps shoot up to the high 40's in a matter of seconds.


Possible causes:

- Too small of a pump, even with the 80GPH.
- Vinyl tubing possibly.
- Damaged radiator.
- Something else?

Edit:

I wrote Teflon tubing instead of Vinyl tubing. I'm using Vinyl tubing.
Edited by *ka24e* - 3/14/12 at 3:05am
post #14 of 68
I think what your seeing is normal.. 50C is not too high for a CPU.

I have my i7 2600K at 4.2GHz with a vcore of 1.28v and it idles at 32-35 and then full loads at 47-51C depending on ambient temperatures. If i start my Prime it will go from idle temps to about 44C then creep up as the whole water system warms. I dont really notice my rad getting hot either tbh, it only ever (if ever) feels very lightly warm.

Why does it matter that the CPU is at 50C, if you don't mind me asking?
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post #15 of 68
I agree Br0k3nLiNk... 50 C while prime95 on intel CPU is fine...if it can stay that way after a few hours that is...

Those r normal temps for a cpu under water even @ stock...and it take time for rad to get warm (but probably it will not)... do prime95 for some time and u should feel ur rad get warm but not too much like the air coolers do. Just monitor ur temps constantly and if they dont go over 55-60 ini a few hours it s all fine.

And water cooling will not give u better results on stock(maybe few celsius but not much), beauty is that temps stay the same when u OC the hell of ur cpu, and when air cooling would crumble water cools it fine...
Zeus
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Zeus
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post #16 of 68
Thread Starter 
It's not an Intel. Its an Athlon 64 x2 5000+ Brisbane core. With the stock H60, my 24/7 overclock was 3.3ghz @ 1.52v and it hardly ever touched 45c under Prime hours in.
post #17 of 68
Thread Starter 
I just tried putting an ice pack in the reservoir, and it didn't really do anything. The res got colder but the lines never changed, and the CPU temp never changed as well.

I'm thinking of picking up a 200+ GPH pump and trying that? I'm out of options at this point. And btw, this setup has been running non-stop since yesterday at around 9pm. So almost 24 hours its been running.
post #18 of 68
Thread Starter 
Here's a screen of the temps / load. Notice prime is only on the second pass using small FFT's and temps are already very hot. Also notice the CPU is actually UNDER volted and that's with an ice pack in the reservoir.

*The fan is plugged directly into a molex connector, that's why the fan RPM is at 0*

460
Edited by *ka24e* - 3/14/12 at 5:52pm
post #19 of 68
Thread Starter 
Okay, so I went balls to the wall and picked up a 330GPH submersible pump. That's 4.125 times more powerful that the 80GPH pump, and probably 10 times the amount of the stock H60.

This pump has pressure, and lots of it. I first connected it using the h60's 120 radiator. The pump very quickly forced the air out of the system. It did help out tremendously, but the problem is still there. I'm able to run @ 1.52v now, but it's still running a little hot. At idle I'm sitting at 37c, which is a huge improvement over the last setup. But, under load temps shoot up the high 40's in seconds.

After that, I figured I would give the GT 240 a shot. I'm currently running with no fans on the radiator so I can see if there are any changes to the res/rad or hose temperature. I'm not feeling any temperature difference on the exhaust hose of the CPU block, and the reservoir water temp is actually pretty cool to the touch. There are no leaks and I do not see a single air bubble anywhere.

So with that. Why do my temps still climb so fast under load? I seriously doubt the pump is the cause, but surly a 330GPH pump is more than sufficient, yes?

Loop specs:

Total tube length: 4 feet at the very max.
Tube size: 1/2 ID from the pump to rad inlet. 1/4 ID tube from the rad outlet to the water block, back to the reservoir.
Reservoir Size: Roughly 1.5 / 2 Gallons of straight distilled water. No additives.
Location: The res / pump / rad / water block are all at the same height. Nothing is lower or higher than one another.
Edited by *ka24e* - 3/14/12 at 8:31pm
post #20 of 68
Thread Starter 
454


This screen was taken with x2 very large ice packs in the reservoir and x2 120mm fans at 100% on the radiator. I'm using the GT240 btw. Which in a couple minutes, I'll be swapping back to the Corsair 120.

Prime was only on the 3rd test using Small FFT and the core temp was already way too hot. AiBooster indicated 54c by the time I saved the screen and stopped prime. Using 1.52v on the stock H60 (which I have been using 1.52v for months) I never once saw anything about 45c, yet with a 330GPH pump, gutted H60 pump and a reservoir with ice temps are higher. I seriously do not get it.

As usual, even with a huge pump NOTHING gets hot. The hoses, rad, reservoir water are very cool to the touch while the CPU just cooks away. The pump puts out so much pressure/vacuum it literately spins the water in the reservoir in a clockwise motion.
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