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Custom Water Loop Overkill?

post #1 of 16
Thread Starter 
Would it be overkill to add a second radiator to my custom water loop?

I just got this kit and installed it yesterday:
http://www.frozencpu.com/products/21235/ex-wat-270/XSPC_Raystorm_750_EX240_Universal_CPU_Water_Cooling_Kit_New_Rev_4_Pump_Included_w_Free_Dead-Water.html?tl=g59c683s2174 [frozencpu.com]

Unfortunately, I'm not seeing the desired performance I was hoping I'd get.

Current loop direction goes as:
Pump/Reservoir >>> CPU >>> Radiator >>> Pump/Reservoir

AMD FX8350 @ 4.4ghz - 1.35v

While running prime95, it will hit 62c. Which is not where I want to be when it's stress testing. I was hoping the water cooling kit would stabilize somewhere in the 50c-60c range while stress testing. My goal is to reach 4.8ghz stable clock. To do so, I will have to bump up the voltage, obviously. I used the XSPC thermal grease that came with it. And I may have applied a little too much, so I will be reinstalling the loop tonight. I'm picking up a new case from Frys so it will allow me to mount everything internally, currently my radiator is externally mounted.

So my question are:
Will adding a second radiator help cool the CPU even more?
http://www.microcenter.com/product/391772/MCR120-QP_Heavy_Duty_Single_120mm_Radiator [microcenter.com]
* This is the one I plan to add. That's if my tubing fits the barbs. Back mounted.

Will adding a push/pull fan configuration on the radiator help cool the CPU even more?

Will changing the order of flow help cool the CPU even more?
Pump >>> Radiator >>> CPU >>> Pump

Any help is much appreciated. Thanks.
post #2 of 16
The order of the loop makes absolutely no difference, especially with only one block in your loop.

Adding push/pull will not only increase your cooling, it will allow you to run your rad fans slower for noise if you wish. But on a thin rad, the gain of push/pull is not as noticeable.

I wish you had some way of measuring your coolant temperature. That would reveil a great deal about the health of your loop. At what speed are you running your rad fans?

It's cool to add more raddage but make sure they are both pulling air into your case, or both pushing air out. Otherwise, one rad is feeding off the other rad's warm exhaust and gets greatly crippled that way.
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post #3 of 16
Quote:
Originally Posted by PepeLapiu View Post

The order of the loop makes absolutely no difference, especially with only one block in your loop.

Adding push/pull will not only increase your cooling, it will allow you to run your rad fans slower for noise if you wish. But on a thin rad, the gain of push/pull is not as noticeable.

I wish you had some way of measuring your coolant temperature. That would reveil a great deal about the health of your loop. At what speed are you running your rad fans?

It's cool to add more raddage but make sure they are both pulling air into your case, or both pushing air out. Otherwise, one rad is feeding off the other rad's warm exhaust and gets greatly crippled that way.
BA DUM DUM! Push pull will yield better results. If you decide to add another rad you should ditch the 750.
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post #4 of 16
Here's the first thing everybody needs to learn about cooling - What's your room temperature? 62C is warm, but if you're in a 40C room, those temps aren't bad, if you're in a 15C room, those temps are terrible. It's all about the temperature delta you have (degrees above room temp).

Next, always re-seat your HS before you worry about temps too much, sometimes it's too much or too little TIM that's causing you to be several degrees higher than you should be.

That radiator should be able to cool your CPU without issue assuming you have even half-way decent fans, so it leads me to believe that either the pump is on a low setting, or your block wasn't seated properly (poor TIM distribution, or just not enough/even pressure on the CPU from the block)
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post #5 of 16
Thread Starter 
UPDATE: So I realized I was looking at the wrong Temp in HW Monitor. As a precaution I also downloaded CoreTemp. *double facepalm.

CPU temp on full load at 4.6ghz is hitting 45c and the cpu socket hit 65c (75c is the max, correct?) Idling CPU stays at 12c and Socket 35c.

But your guys replys really help for future plans wink.gif Thank's very much for your input.

A very strange thing DID happen though.. While stress testing, the temperature started to stabilize around 45c. But then all of a sudden it went down to 25c and stayed there. This happened in both HW Monitor and CoreTemp.
Edited by HavokMR2 - 2/28/14 at 2:20pm
post #6 of 16
Quote:
Originally Posted by HavokMR2 View Post

Idling CPU stays at 12c
You might want to double check that. It's impossible unless you live in an igloo.
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post #7 of 16
Thread Starter 
Quote:
Originally Posted by PepeLapiu View Post

You might want to double check that. It's impossible unless you live in an igloo.

It's actually a little higher than that, sorry. But 12c is only 53F. I don't find it hard to believe. It's cold and rainy today ;p


What's another great CPU temp monitor? I'm using HWmonitor and CoreTemp. Would AMD Overdrive be a good utility to check core temps as well?
post #8 of 16
the amd fx processors have bad idle temp readings. unless the room your pc was idling in was 12*C or colder, its impossible to idle at 12*C. btw, 53*F is pretty damned cold to sit and type in.
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post #9 of 16
Quote:
Originally Posted by pc-illiterate View Post

the amd fx processors have bad idle temp readings. unless the room your pc was idling in was 12*C or colder, its impossible to idle at 12*C. btw, 53*F is pretty damned cold to sit and type in.
Is it? I sit in 10 maybe 5 C room all winter. I love it.
Quote:
Originally Posted by HavokMR2 View Post

UPDATE: So I realized I was looking at the wrong Temp in HW Monitor. As a precaution I also downloaded CoreTemp. *double facepalm.

CPU temp on full load at 4.6ghz is hitting 45c and the cpu socket hit 65c (75c is the max, correct?) Idling CPU stays at 12c and Socket 35c.

But your guys replys really help for future plans wink.gif Thank's very much for your input.

A very strange thing DID happen though.. While stress testing, the temperature started to stabilize around 45c. But then all of a sudden it went down to 25c and stayed there. This happened in both HW Monitor and CoreTemp.
72C is max socket temp.
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post #10 of 16
Thread Starter 
Max socket temp is 72c, but what if I'm stress testing? I would imagine this will heat up over 72c.
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