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Liquid Cooled NES-PC - Page 2

post #11 of 60
Thread Starter 
Replacement Mobo came in the mail today. Thanks, Amazon! I used different screws and was more liberal with the CPU grease this time. Idle CPU temps ran at 30C and Prime95 ramped them up to 60C. Better than before. CPU temps ramped up to 80C while stressing the gpu in furmark, though. Then I noticed the pump wasn't running. I tested the pump for the next 40 minutes. It started and stopped periodically. I hooked it up to a separate PSU. The pump ran solid for a couple minutes, then died entirely. Ughhhh!

I have a few problems to work out now:

The pump. Was it air bubbles or what? The pump ran ridiculously loud at full speed, but was nearly inaudible turned all the way down. I wouldn't know the difference between a noisy pump and air bubbles. Ill see how it goes with the replacement.

My GPU came before the CPU in the loop. I didn't think that it would make that big of a difference which was first. Maybe the pump had stopped and that's why it didn't run well. Or could I still have problems with the CPU block? I'm not too excited about troubleshooting that one.

I would appreciate input from you veterans. Everything fits and the GPU runs so cool, I don't see why the CPU shouldn't follow suit.
post #12 of 60
Thread Starter 
Note: I decided to postpone cable management till everything was running and in the box.

The pump came in the mail. However, I've been sidetracked by a GPU project for this build. Yesterday, I added a picoPSU 120WI to the case. It is spliced into the 330W adapter that also powers the MoBo. The picoPSU provides the additional 6-pin power to the new graphics card, a GTX 660. So far, the system has run well (temporarily air-cooled) in Furmark and Prime95. While running the GpU at load in Furmark, the entire system draw is about 200W.

The ToDo list for this weekend:

-undervolt the GPU. The 660 runs considerably hotter than the 7750 that I was using. Under volting will reduce heat (and water loop delta).

-attempt to fit all the new components in the case. I used a cardboard cutout to test the fit of the new GPU. Now it's time to try out the real thing.

-re-tube the water loop with the CPU first in series. Also, add a t-line with the manifold that came in the mail. Previously, I tried the bathtub method and that may have killed my pump.

-benchmark temps. If temps are too high, I can underclock the gtx 660. Even underclocked it will be an improvement from the 7750.

-manage power to picoPSU. Currently, it is running any time the power adapter is connected. A 12v relay will fix that, though, sending it a Power_On signal only when 12V is running through the MoBo.
Edited by ettescott - 3/1/13 at 1:23pm
post #13 of 60
Thread Starter 
Ugh!!!!!! I feel like I'm so close but the GPU power situation simply isn't working. It worked at first. Furmark ran just fine, etc. Just enough to get my hopes up. Then intermittent momentary mouse freezes and 'driver stopped responding' messages. I even played some Skyrim and AC3 on highest settings. But reliability has just gone downhill. Eventually, I noticed a high pitched squeak from the picoPSU 120WI when the card was at load. Whenever the card dropped out (and the 'driver...restarted' message came up), the noise stopped. The system became responsive in conjunction with the noise resuming. I decided that the 120WI specs were at 12V input and it perhaps didn't support enough current at 19V.
I ordered a picopsu 160XT w/ 12V 12A adapter, and the PicoPSU exhibited a similar noise at load, but similar instability issues persisted. I then tried wiring the 12V brick directly to the GPU. Instability again....

I apologize for anyone following the thread, but I'm kinda stuck on this GPU power thing. I really really really want it to work and all the numbers add up. Ill only move on and back to the 7750 if I can discover the problem, or a significant amount of time has passed.

Here's the possibilities for my instability issues:
-The GPU isn't receiving enough power. Either the 12V power brick can't deliver enough power or the picoPSU's simply can't do it, even though they all advertise about 10A on the 12V rail. Maybe the brick or Pico can support the current draw, but the connections being used don't.
-Dual PSU discrepancies. The card draws power from both the slot and the 6-pin connector. Perhaps the GPU can't handle slightly different inputs? But I've seen dual gpu setups, so that doesn't seem to jive.
-maybe my card was damaged with the first picopsu? That would mean any other troubleshooting is just running me in circles.
-maybe the problem is at the slot. The motherboard is advertised as only supporting 25w at the slot. However, I know of one person that has an 80w card running on the same mobo with various 12V headers on the mobo spliced into the 6-pin power.


Ughhhhhh......

Update: with the 12V brick plugged straight yinto gpu, the gpu itself makes a noise when in use. Uh oh.

Edit: that gpu noise is normal for high end gpu's. It has to do with voltage regulation. Increasing core speeds can make the noise higher pitched and less obvious, or so im told. Ill play with the speed/noise after the build is fnshed.
Edited by ettescott - 3/17/13 at 8:01am
post #14 of 60
Thread Starter 
Success!!! Returned the GPU and the replacement arrived in the mail today (Amazon, will you marry me?) 19v brick is hooked up to the Mobo and the 12V brick is wired up to the GPU. No system instability so far. Skyrim is at a whole new level of eye candy, as well biggrin.gif.
I have a wide input 12V regulator in the mail from china. Hopefully it will work so that ill only need the one 19V brick. Even if it doesn't, ill stick with the two brick scenario, because I like the upgraded graphics too much.

Here's the ugly looking setup up for testing (cooled on air).


The 12v step down regulator that's in the mail.



Next on the list:

-More stress testing (on air)
-custom water loop
-stress testing on water

I probably won't get to the dirty work for the water loop till this weekend.
post #15 of 60
Dude, this is amazing. I'm subbed biggrin.gif also, your question about the GPU coming first in the loop, it doesn't matter. The water is moving so fast in the loop that it is virtually the same temperature everywhere in the loop, at worst varying 1 degree Celsius (in a large loop). Again, this is amazing. I can't wait to see final pics!

Also, forgive me if you already stated this in one of your earlier posts, but are you going to keep the radiator external or try to stuff it in there with the rest of the components?
The Urban
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The Urban
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post #16 of 60
Thread Starter 
The rad will be inside the case, along with the fan. The fan will stick out the bottom by just a few millimeters. It all fit when I finished the custom loop the first time, but because of pump and other issues I didn't take pics. I'm excited to get this put together!

edit: About the loop and cpu temps. My CPU block came with scratches on bottom. Not gouges, but still they are scratches. Thermal grease will easily fill those up, right? I'm just worried that my CPU block was the reason the CPU temps were so vulnerable the first time.
Edited by ettescott - 3/7/13 at 5:34pm
post #17 of 60
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Philip J. Fry
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Samsung 850 Evo 250GB Western Digital Caviar Black1TB NZXT Kraken X41 Windows 7 Ultimate 
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Which one? :P 
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Philip J. Fry
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Turanga Leela
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CPUMotherboardGraphicsRAM
i5 4690K 4.2ghz 1.15v Asus Z97I-Plus EVGA GTX1070 ACX 3.0 HyperX 16gb 1866mhz 
Hard DriveHard DriveCoolingOS
Samsung 850 Evo 250GB Western Digital Caviar Black1TB NZXT Kraken X41 Windows 7 Ultimate 
MonitorMonitorMonitorPower
ASUS VN247H-P ASUS VN247H-P ASUS VN247H-P SPI Magna Gold 750w 
CaseMouseMouse PadAudio
Corsair Obsidian 250D Zowie EC1-A Steelseries QCK XXL Fostex TH-X00 Mahogany 
AudioAudioAudio
Fiio E10 Olympus Modmic 4.0 Beyerdynamic DT770 80ohm Removable Cable Mod 
CPUGraphicsRAMHard Drive
Intel Core i5 M 480 Nvidia GeForce 310M 4gb Samsung ram 640gb Samsung HM641JI 
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Which one? :P 
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post #18 of 60
It seems to me like small scratches wouldn't make a difference with thermal greese, but I'm not too sure. Honestly I'm not very experienced with watercooling myself, just the basics. I would check some of the devoted watercooling threads around here and see what some of those more experienced people have to say thumb.gif
The Urban
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1TB 5400rpm DVD+RW Multi Combo Disc Drive Windows 8 64bit 15.6" 1920x1080p 
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The Urban
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Lenovo Y500
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post #19 of 60
Thread Starter 
Wishing this was more than concept art...
post #20 of 60
Quote:
Originally Posted by ettescott View Post

Wishing this was more than concept art...
That would be really easy to do yourself. Buy a silver wireless controller, but red abxy buttons and get black paint and properly tape off the stuff. Or get someone else to do it for you, plenty of controller modding/custom painting services out there tongue.gif
 
Philip J. Fry
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Turanga Leela
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CPUMotherboardGraphicsRAM
i5 4690K 4.2ghz 1.15v Asus Z97I-Plus EVGA GTX1070 ACX 3.0 HyperX 16gb 1866mhz 
Hard DriveHard DriveCoolingOS
Samsung 850 Evo 250GB Western Digital Caviar Black1TB NZXT Kraken X41 Windows 7 Ultimate 
MonitorMonitorMonitorPower
ASUS VN247H-P ASUS VN247H-P ASUS VN247H-P SPI Magna Gold 750w 
CaseMouseMouse PadAudio
Corsair Obsidian 250D Zowie EC1-A Steelseries QCK XXL Fostex TH-X00 Mahogany 
AudioAudioAudio
Fiio E10 Olympus Modmic 4.0 Beyerdynamic DT770 80ohm Removable Cable Mod 
CPUGraphicsRAMHard Drive
Intel Core i5 M 480 Nvidia GeForce 310M 4gb Samsung ram 640gb Samsung HM641JI 
OSOther
Windows 7 Home Premium Samsung QX410 Laptop 
Keyboard
Which one? :P 
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Philip J. Fry
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Turanga Leela
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CPUMotherboardGraphicsRAM
i5 4690K 4.2ghz 1.15v Asus Z97I-Plus EVGA GTX1070 ACX 3.0 HyperX 16gb 1866mhz 
Hard DriveHard DriveCoolingOS
Samsung 850 Evo 250GB Western Digital Caviar Black1TB NZXT Kraken X41 Windows 7 Ultimate 
MonitorMonitorMonitorPower
ASUS VN247H-P ASUS VN247H-P ASUS VN247H-P SPI Magna Gold 750w 
CaseMouseMouse PadAudio
Corsair Obsidian 250D Zowie EC1-A Steelseries QCK XXL Fostex TH-X00 Mahogany 
AudioAudioAudio
Fiio E10 Olympus Modmic 4.0 Beyerdynamic DT770 80ohm Removable Cable Mod 
CPUGraphicsRAMHard Drive
Intel Core i5 M 480 Nvidia GeForce 310M 4gb Samsung ram 640gb Samsung HM641JI 
OSOther
Windows 7 Home Premium Samsung QX410 Laptop 
Keyboard
Which one? :P 
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