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Aquarium chiller yes or no? - Page 15

post #141 of 216
Quote:
Originally Posted by FlashG View Post

......I am fighting with my bigNG, trying to get it working under Win 7 (any hints would be welcome)... so there is still a LOT of work to do. I will post results and more pics as I go along...

FlashG
The controller software for the bigNG (Navigator 2.9) does work with Win 7... with my rig, the secret was switching from the internal USB to the external USB... works like a charm

FlashG
    
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post #142 of 216
Just get as much flow as you can. Too much flow will never hurt temps (baring turbulence causing air pockets).
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post #143 of 216
Well, this is what I was aiming for: a top 200 in HWBOT.

This is nowhere near as fast as I can get the proc to go and I do need to play with flows, fanspeed and voltages. It seems that the aquarium chiller can take 2C off my fluid temp. Not off th entire loop, but off the temp of the fluid returning from my rad going to my proc.... what that is worth is subjective.

Now I'm going to try and find the sweetspot for flows (Ex. if the fluid flows through the chiller too fast, temp drop isn't as low... it also seems like if the fluid flows through the cpu block too fast, idle temps increase).

I think I need to do a few runs with prime95 with and without the chiller to see where that flow sweetspot is.

FlashG
ps - yes, a 1/3 hp compressor unit may have been the better choice ... but turing the house A/C down to 17C is much easier

    
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post #144 of 216
Quote:
Originally Posted by FlashG View Post

Now I'm going to try and find the sweetspot for flows (Ex. if the fluid flows through the chiller too fast, temp drop isn't as low... it also seems like if the fluid flows through the cpu block too fast, idle temps increase).
Wrong Wrong Wrong, too much flow NEVER hurts temps. It's a loop not a river, temps will equalize in the end, it becomes a mater of how fast heat can be pumped out of the loop by the cooler. Faster is never worse, though there is a point where faster will no longer help your temps.
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post #145 of 216
Well, I've been playing with it for a few weeks now, and the more I play with it (the aquarium chiller!!!), the more impressed I am.

Without Hyper-Threading, I can take 3 to 4 degrees off the normal operating temp of the coolant going straight to the CPU... no matter how much load I've been putting on the system, it is 3 to 4C lower PLUS I just found I can take this coolant to 3 to 4C lower than room temp too!!! Straight away at start up, I can idle the system and the temp will drop to below room temp. Best I had was down to 20C with 24.5 room temp!!! Since I am into benching (not 24h burns... short classifal benches), this is a big deal to me. I would deft do it again.... but of course, bigger IS better and I might have gone for a more powerful chiller... but then it would have to been compressor based, and would be noisy.

BTW, I had been setting the chiller to 15C.... assuming that I would never make it that low anyway... and assuming the chiller's control circuit simply ran the peltier at the same 'wattage' and simply triggered a kill circuit when/if the temp was reached. For fun once, I set it to 4C, which is the lowest possible. This is when I realised I COULD pull the processor flow loop to below room temp. Turns out if you set a lower threshold temp, the peltier runs colder (more current)!!!!! Anyway, I think the answer to the Yes/No question is Yes... because I would do it again.... but of all the things I purchased for this rig, the unlocked xeon i7 (w3580) is the BEST!!! It is super cool and very efficient!!!

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post #146 of 216
Quote:
Originally Posted by FlashG View Post
Well, I've been playing with it for a few weeks now, and the more I play with it (the aquarium chiller!!!), the more impressed I am.

Without Hyper-Threading, I can take 3 to 4 degrees off the normal operating temp of the coolant going straight to the CPU... no matter how much load I've been putting on the system, it is 3 to 4C lower PLUS I just found I can take this coolant to 3 to 4C lower than room temp too!!! Straight away at start up, I can idle the system and the temp will drop to below room temp. Best I had was down to 20C with 24.5 room temp!!! Since I am into benching (not 24h burns... short classifal benches), this is a big deal to me. I would deft do it again.... but of course, bigger IS better and I might have gone for a more powerful chiller... but then it would have to been compressor based, and would be noisy.

BTW, I had been setting the chiller to 15C.... assuming that I would never make it that low anyway... and assuming the chiller's control circuit simply ran the peltier at the same 'wattage' and simply triggered a kill circuit when/if the temp was reached. For fun once, I set it to 4C, which is the lowest possible. This is when I realised I COULD pull the processor flow loop to below room temp. Turns out if you set a lower threshold temp, the peltier runs colder (more current)!!!!! Anyway, I think the answer to the Yes/No question is Yes... because I would do it again.... but of all the things I purchased for this rig, the unlocked xeon i7 (w3580) is the BEST!!! It is super cool and very efficient!!!

FlashG
What is the max core temperature at 4ghz? (and at what coolant temp and what ambient temp)?
Thanks.

BTW, looks like you are having fun! Enjoy what you are doing. Keep going!
Edited by windfire - 1/21/10 at 6:26am
post #147 of 216
Whatever it is, it's not worth it. He's already in the price range of phase change and his temps are higher than a decent TEC would provide...
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post #148 of 216
I wanna know what max core temps are running Linx at 4.5GHz?

Also, it'd be cool to know how high you are able to clock that 3580? Unlocked i7... Very nice.
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post #149 of 216
those things are super expensive...For the same price you could order a chiller or a phase unit from someone here
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post #150 of 216
Quote:
Originally Posted by FlashG View Post
Well, this is what I was aiming for: a top 200 in HWBOT.

This is nowhere near as fast as I can get the proc to go and I do need to play with flows, fanspeed and voltages. It seems that the aquarium chiller can take 2C off my fluid temp. Not off th entire loop, but off the temp of the fluid returning from my rad going to my proc.... what that is worth is subjective.

Now I'm going to try and find the sweetspot for flows (Ex. if the fluid flows through the chiller too fast, temp drop isn't as low... it also seems like if the fluid flows through the cpu block too fast, idle temps increase).

I think I need to do a few runs with prime95 with and without the chiller to see where that flow sweetspot is.

FlashG
ps - yes, a 1/3 hp compressor unit may have been the better choice ... but turing the house A/C down to 17C is much easier
For many typical watercooled systems, a faster flow rate is not always better(see attached graph). But since you have a GTX480 and a chiller, perhaps this characteristic does not apply to yours. But regardless, I think it is good to do experiments with various flowrates and see what happens.
I suppose the sweet spot may be slightly different when your system is at idle and when it is at full loading. I am interested to see your findings.
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