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Temperature Question

post #1 of 8
Thread Starter 
About a month ago I finished my first Water-cooling loop. It is Res -> Pump -> Rad -> CPU -> Res, with no GPU at the moment. The Rad is an alphacool nexxos 420 currently with 3 fans in pull, and the CPU is a 377k @ 4.5Ghz.

My question is about temperatures. What kind of temps should I be expecting? I thought I would be getting mid 20s or lower but it seems to hover around mid to low 30s. I used AS5 TIM and the room is air conditioned.

I have a few thought, but no real idea hypothesis as to what the problem is.
  1. Too much/not enough TIM
  2. Not enough ventilation/air movement
  3. Too much water in system (?)
  4. The air cooled 7970 is warming up the air too much before it goes through the rad.

1. I used the standard line method when applying the AS5. Well past the burn in period. Should I consider reapplying?

2. Air is fed into the case from the front by 2x Corsair SP120 High Performance, and exhausted through the radiator by 3x NZXT 140mm. I would think that this is enough, but I am not 100% sure.

3. The system is using about 5ft of 1/2" tubing, a 420 rad, and an EK-RES X3 400 filled about 3/4 of the way up. Is having too much water a thing? Could there be a point where the amount of water overwhelms the potential cooling of the radiator?

4. This is the one I am leaning the most towards. My 7970 is currently air cooled. Could it be warming up the air brought in by the intake fans to the point where it is not removing enough heat when it gets to the rad?
post #2 of 8
Are those temperatures load or idle? If they're load, those are amazing temps. If they're idle, well, get your load temps and we'll see.

I know you said your room is air conditioned, but having the exact ambient temperature would also help.
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post #3 of 8
- Ivy Bridge will idle higher than previous chips because it has poor TIM inside instead of being soldered.

- AS5 has fallen a ways down the TIM charts, you could drop temps by using a better TIM, but I doubt that would affect idle temps.

- You should use the rice grain TIM application method; the line method usually ends up with too much paste.

- You should use your radiator fans as intake, not exhaust; this way you are getting fresh air. This is especially true if your video card is not a rear-external exhaust type.

- There's no such thing as too little or too much water. The greater your water volume, the longer it takes to reach equilibrium; it does not affect the cooling performance.
post #4 of 8
i also have an ivy bridge, do these temps look alright, im unfortunatly cooling 2 gpu's and cpu of one nexxos monsta 240, but i am building an external rad box soon.


ratings and advice would be awesome guys smile.gif
    
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post #5 of 8
Quote:
Originally Posted by its-butters View Post

i also have an ivy bridge, do these temps look alright, im unfortunatly cooling 2 gpu's and cpu of one nexxos monsta 240, but i am building an external rad box soon.


ratings and advice would be awesome guys smile.gif

that seems very good. you have lga 2011 and 2 gpus on a 240 rad.
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by andom View Post

Are those temperatures load or idle? If they're load, those are amazing temps. If they're idle, well, get your load temps and we'll see.

I know you said your room is air conditioned, but having the exact ambient temperature would also help.

I'll get some solid 3DMark and ambient temps when I get home but off the top of my head the idle temps are the low 30s and the load temps are mid to high 30s and the ambient room is mid 20s C.

Quote:
Originally Posted by Electrocutor View Post

- Ivy Bridge will idle higher than previous chips because it has poor TIM inside instead of being soldered.

- AS5 has fallen a ways down the TIM charts, you could drop temps by using a better TIM, but I doubt that would affect idle temps.

- You should use the rice grain TIM application method; the line method usually ends up with too much paste.

- You should use your radiator fans as intake, not exhaust; this way you are getting fresh air. This is especially true if your video card is not a rear-external exhaust type.

- There's no such thing as too little or too much water. The greater your water volume, the longer it takes to reach equilibrium; it does not affect the cooling performance.
- Yeah, I am figuring that. I am considering de-lidding, but that's for a different thread.
- The block came with Geild extreme or something like that, I guess I should use that and the rice grain method If I end up reapplying.
- I should get some ambient system temps to see what the air temperature in the case is, it may not much different than the temp at the CPU. But of it is, I'll flip the fans over.
- Awesome, good to know.


I am going to post some specific idle and load temps after work. But I do think that my idle temps are floating in the 30s.
post #7 of 8
Quote:
Originally Posted by hammertime850 View Post

that seems very good. you have lga 2011 and 2 gpus on a 240 rad.
yeah its just a tad noisy atm so hopefuly when i get the other rads in the rad box i can drop the rpm on the fans considerably.
    
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intel 3970x AsRock x79 extreme 11 EVGA 680 EVGA 680 
RAMHard DriveHard DriveHard Drive
G.skill ripjaw z samsung 840 pro corsair force Western digital black 
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samsung bluray read and write custom waterloop, CPU and dual VGA 240 nexxos m... Windows 8 (classic shell) panasonic 60" plasma  
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logitech G510s Seas-Sonic 1250x fully modular CoolerMaster Cosmos 2 Rat 9 cyborg wireless 
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sony 1250W 7.1 surround sound 
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intel 3970x AsRock x79 extreme 11 EVGA 680 EVGA 680 
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G.skill ripjaw z samsung 840 pro corsair force Western digital black 
Optical DriveCoolingOSMonitor
samsung bluray read and write custom waterloop, CPU and dual VGA 240 nexxos m... Windows 8 (classic shell) panasonic 60" plasma  
KeyboardPowerCaseMouse
logitech G510s Seas-Sonic 1250x fully modular CoolerMaster Cosmos 2 Rat 9 cyborg wireless 
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sony 1250W 7.1 surround sound 
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post #8 of 8
Thread Starter 
These are my idle temps. Yeaah, so unless anyone thinks that it is a heat displacement issue, I think that my first bet is to reapply TIM.

The waterblock came with Gelid GC Extreme TIM, and according to this source it is pretty good, so I will be using that.

Any other input? My temps are pretty ****ty, especially considering its-butters has a 4 degree lower temp with a smaller rad, sli 680s and a SBE processor.
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