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Cooling sulution question for an Overclocked Intel processor

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December 9, 2013 5:04:21 AM

I am planning on overclocking an Intel 4820K processor to roughly 4.4-4.8GHz.

Is this practical?

I think it is as i am pretty sure i have seen people with overclocks up to 5.4GHz using water cooling before.

To be on the safe side i was thinking of using two 580mm high performance radiators with 4 140mm pulling fans.

Would this be enough?
Would a push-pull set up work better?
If so, what are the best, highest throughput but quietest fans i could use (i dont really want my computer to sound like a jet engine)?
a b à CPUs
December 9, 2013 8:51:36 AM

Holy crap, yeah that would definitely cool it properly, but it is certainly overkill. You don't need more than a single 360mm rad in push/pull for the CPU.
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December 10, 2013 12:38:43 AM

ihog said:
Holy crap, yeah that would definitely cool it properly, but it is certainly overkill. You don't need more than a single 360mm rad in push/pull for the CPU.


What if i pumped my CPU up to 5.2 GHz, like a friend recommended? would 4 pulling fans on each rad be enough?

I am going a bit overkill, i know, but its better to have too much than not enough.
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December 10, 2013 5:31:05 AM

Hey man, if you got the money for it and the space inside and/or outside your case, go for it. I would imagine that you would really only need 4 high static pressure fans on each rad (I'd put them in push), but if you're getting 2 480mm rads, why not get the extra 8 fans?

But I feel that you will be running much to high of a voltage to get 5.2 GHz to be safe (there's a possibility that you won't, but most likely, the voltage will be ridiculous), so if you do go the route your planning, you may be able to cool the CPU sufficiently, but the voltage will probably be too much. Most people are uneasy about 1.4V, but I would imagine you'll need at least 1.5V.
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December 10, 2013 5:39:07 AM

ihog said:
Hey man, if you got the money for it and the space inside and/or outside your case, go for it. I would imagine that you would really only need 4 high static pressure fans on each rad (I'd put them in push), but if you're getting 2 480mm rads, why not get the extra 8 fans?

But I feel that you will be running much to high of a voltage to get 5.2 GHz to be safe (there's a possibility that you won't, but most likely, the voltage will be ridiculous), so if you do go the route your planning, you may be able to cool the CPU sufficiently, but the voltage will probably be too much. Most people are uneasy about 1.4V, but I would imagine you'll need at least 1.5V.



Yea, my budget is pretty high (been saving up for two years, living at my parents with few outgoings on a 15000 per year salary....) so i am going all out on this computer.

Could you possibly recommend a few fans or fan manufacturers that are good high-airflow, low sound solutions? and what RPM of fan i should be going for? (I was thinking somewhere between 1200-1600RPM for 140mm fans?)

I would like fans that have really high throughput (maximum cooling) with lowest noise possible. Its one of the reasons i am keeping the number of fans as low as possible. I dont want it sounding like a jet engine.

Must admit, i didnt fully take into account voltages. Maybe if i watercooled my motherboard? would that help?
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December 10, 2013 5:49:46 AM

smeercat said:
Yea, my budget is pretty high (been saving up for two years, living at my parents with few outgoings on a 15000 per year salary....) so i am going all out on this computer.


Congratulations!

Quote:
Could you possibly recommend a few fans or fan manufacturers that are good high-airflow, low sound solutions? and what RPM of fan i should be going for? (I was thinking somewhere between 1200-1600RPM for 140mm fans?)

I would like fans that have really high throughput (maximum cooling) with lowest noise possible. Its one of the reasons i am keeping the number of fans as low as possible. I dont want it sounding like a jet engine.


From what I've Googled, these are the best 140mm fans for radiators (due to their high static pressure, which is what you want for a rad fan, rather than CFM): http://www.frozencpu.com/products/11895/fan-780/BGears_...

They are 1800 RPMs, but if you want, you can lower the RPMs yourself through software. But, since you are going to have so many fans, you would want a fan controller. I doubt your motherboard has 8 fan headers and it certainly doesn't have 16.

Quote:
Must admit, i didnt fully take into account voltages. Maybe if i watercooled my motherboard? would that help?


Watercooling the mobo's VRMs would be nice, but it's not the temperature I'm worried about. Even when temperatures are in check, a high voltage can still fry VRMs.
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December 10, 2013 5:59:02 AM

ihog said:
smeercat said:
Yea, my budget is pretty high (been saving up for two years, living at my parents with few outgoings on a 15000 per year salary....) so i am going all out on this computer.


Congratulations!

Quote:
Could you possibly recommend a few fans or fan manufacturers that are good high-airflow, low sound solutions? and what RPM of fan i should be going for? (I was thinking somewhere between 1200-1600RPM for 140mm fans?)

I would like fans that have really high throughput (maximum cooling) with lowest noise possible. Its one of the reasons i am keeping the number of fans as low as possible. I dont want it sounding like a jet engine.


From what I've Googled, these are the best 140mm fans for radiators (due to their high static pressure, which is what you want for a rad fan, rather than CFM): http://www.frozencpu.com/products/11895/fan-780/BGears_...

They are 1800 RPMs, but if you want, you can lower the RPMs yourself through software. But, since you are going to have so many fans, you would want a fan controller. I doubt your motherboard has 8 fan headers and it certainly doesn't have 16.

Quote:
Must admit, i didnt fully take into account voltages. Maybe if i watercooled my motherboard? would that help?


Watercooling the mobo's VRMs would be nice, but it's not the temperature I'm worried about. Even when temperatures are in check, a high voltage can still fry VRMs.


Thanks for the fan recommendation. I did think about fan headers, and i did come up with a rather intricate and wacky system of cable extenders, 9-to-1 headed cables and relay spots. I could not really find a fan controller that could service so many fans, which was one of the reasons i wanted to reduce the number down to a more manageable number.

Quick question, earlier you recommended putting the fans in push instead of pull. What difference would that make? how different would the performance be?

Hmm. Blowing the VRMs would be the last thing i wanted. I dont want to ruin equipment unnecessarily. I might stick to a target of 4.8GHz and see what i can do from there.
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a b à CPUs
December 10, 2013 6:10:12 AM

Issues will arrive with using so many fans one header, such as the fans not getting enough power. I don't know what "relay spots" are, but if they alleviate those problems then go for it. But you might not be able to control the RPMs of the fans.

As for pushing over pulling, read here: http://www.coolingtechnique.com/martinsliquidlab/Radiat...

Quote:
Push Vs Pull - This depends on fan speed/power. The high speed fans at 2000RPM with a 38mm fan thickness provided the best performance in a push condition. The slow speed fans with 1350RPM with a 25mm fan thickness provided the best performance in a pull condition. I would estimate that performance line is likely to cross in the 1500-1700RPM range where they are equal. So.... slow speed = pull, high speed = push, medium speed = it doesn't really matter.


I prefer pushing, and since your fan speed may or may not be enough to cross that median, I'd play it safe and put them in push configuration.
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