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Help Me Understand Liquid Cooling!

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Last response: in Overclocking
August 17, 2009 10:15:00 PM

Okay so basically, I'm having a bit of trouble starting to build a list of stuff i need to liquid cool my rig, so correct me if I'm wrong!


- Pump
- Radiator
- Water Blocks for each part I'm cooling
- Water Reservoir?

So i got that part down, and one of my biggest problems is determining how North Bridge/South Bridge/Mosfets defer from one another... they're all completely separate things on a motherboard correct? And for each one you will have a different water block? Mosfets control like voltage and temperature throughout your motherboard correct? Thanks for helping me out guys Toms Hardware is superb for this kind of stuff.

More about : understand liquid cooling

a b V Motherboard
a b K Overclocking
August 17, 2009 11:26:31 PM

Conumdrum said:
I'll just snip the whole thing, I just redid parts of it.

Us guys have done the WC thing, there are basics you gotta know. Take a look, don't take it as a diss on you or a rebuttal, look at as a friend saying "Dude, you gotta know what to say and how to communicate".
CPU HS $65
GPU HS and air HS for vram and mosfets $95, full cover block, $100-$200
Radiator $60 min, up to $130
Pump $50 +
Resiviour $25
Hose, some barbs and clamps etc (min $25, more like $35)
Fans $15-30

I went top notch and spent close to $600 to cool my CPU and GPU.
First you gotta learn about WC. It's not like walking into Best Buy.
Spend a while (weeks is best for your sanity) at these links.
Look at the hundreds of loops close to your case and components in the stickies, read a couple 50 or so threads over the next week or so, you'll be on the ball to make the right choices and by then know how to put it together.
Not 'Roket Sience', but basic knowledge is required.
And you should spend a few hours on the listed sites reading threads. It's how we learn. Once the goodies show up on your doorstep your on your own.
For your benefit please spend a few days reading a LOT. At the busiest places for WC masters. Guys who have done it for YEARS at OC Forums and xtreme forums. It took me a while (I was OCing on air, aftermarket stuff, bios settings, best chipsets etc etc) to learn the language and the tricks to a easy install.

Don't expect miracles or SUPER DOOPER over clocks. What you will get is a quiet system that can handle OC to the max of your hardware IF you buy quality and buy smart. And minor maintenance too, a bonus for the water cooler.

Also while there please read on case mods etc. The radiators are not for small cases, pumps and hose routing, wire management and other things are important. Google your planned case and the word water-cooled in one line. You might get lucky.
Edit: The next paragraph was from 2008. With the advent of the HOT i7 and bigger GPU's, it has changed. A 220 size MIN rad for an i7, you want big overclocks, better go 320 sized rad.

IF you just cool your CPU and your NB if you want, you can get by with a 120.2 sized radiator (RAD). And MAYBE fit in inside depending on your mod skillz. You want to cool your GPU too, you'll need a 120.3 sized rad, and it probably won't fit inside. The rear external rad really works great. No matter what your adding 10lbs to your PC.

Once you got an idea of what is good/bad then start getting your system for WC put together and we'll be glad to help.
Here is the poop on solid info on air/water temps. The link is to an MCR320.
Scroll half way down and you can see the in/out air diff on the chart. It depends, like I said on fannage what the out air temp vs. the in temp is.

You can also see the water in/out is very close in temps. No more than 1.5 C. Amazing eh? I thought so too once I deciphered the charts.

So if you put a second rad with good airflow, you still get good results. Fannage needs to be higher to compensate for the increased air restriction. Meaning double fans on the rad setup, but it's a viable solution.

Equilibrium (tough word) means with a set heat load (idle/load) after an amount of time temps in a WC loop will stabilize. The heat load is the same, ambient air is the same, fannage is the same, pumps are the same, size of rads are the same, temps will stabilize for those conditions. Any of these parameters change, it has to stabilize. …………………………………………………………
Cleaning a loop, not a new loop: I do this once a year, I drain and refill at 6 months, the next time I do this……..
Wash hands very well, getting rid of hand oils.
For pumps and blocks, fittings, clamps, acrylic res/block parts.... not hose, tear it to smallest pieces, put in a bowl, heat water up not to boiling add 10% vinegar, when hot, pour over parts. Rinse in 10 min or so. Put aside.
The bocks will probably have some black oxidation. Take the copper parts out of the pile of parts you took out of the water. Dry well and pour ketchup on them, and set aside. Only the copper parts need this.
Rad cleaning: fill with very almost boiling hot water. Let sit 10 minutes, drain half out and shake for 5 min. Repeat till liquid is clean.
All the pump, block, fittings, and clamps, inspect, get in the tiniest corners with a tooth brush. Kind of meditative, time consuming, you learn a lot about o-ring size, how it all feels. Run a rag using a caat hanger and dish soap through the tubing, rinse well.
Rinse all the parts and hose with distilled, dry then really dry with an air compressor (nice extra step to get rid of water spots). Don’t need to dry the inside of the hose.
Now on to the copper parts, they should have been soaking an hour or two. A toothbrush and ketchup should clean much of the oxidation. It probably won’t be like new, but pretty darn good. Rinse, dry, and blow the parts.
That’s it.
Benching software and such is very varied. I use these for each purpose:
These are pretty standard and used by many.
Monitoring the PC temps overall: HWmonitor aka hardware monitor
CPUZ for CPU info
GPUZ for GPU info
CPU only: RealTemp
GPU only: ATI Tool, I have a Nivida GTX280, so it works on Nvidia

Loading/benching tools:
CPU loaders: Prime95 and OCCT
GPU Loaders: ATI Tool and the best one is Furmark, nothing pushes the GPU harder right now.
Benching for overall graphics/gaming performance is 3DMark06
Guides Pretty up to date info and buying guide
 verclocking-and-cooling&Itemid=86" rel="nofollow" target="_blank"> Another good guide What to do once all the stuff is in the door

Forums Not a noob site, but great stickies My fav, good peeps, know their stuff, less hardcore [...] opic=20277 A GREAT Europe site Decent site

Tests on equipment, not reviews, truly scientific tests [...] n&ie=UTF-8 Info on rad testing More rad testing Host for Martins lab and some newer tests Test results, very technical

Stores [...] e&Itemid=1

The basic things you need to cool the CPU: CPU Water block + pump+ res +radiator + tubing + distilled water + PT Nuke(or KillCoils).

This should clear things up as far as North/South bridge goes:

MOSFETs regulate voltage.
a b V Motherboard
a b K Overclocking
August 17, 2009 11:27:34 PM

FYI: Don't bother water cooling Northbridge, Southbridge, MOSFETs, RAM, or HDDs. It's a waste of money.
Related resources
August 18, 2009 2:43:49 AM

Sweet! Preciate it guys
August 18, 2009 5:40:28 AM

Shadow703793 said:
FYI: Don't bother water cooling Northbridge, Southbridge, MOSFETs, RAM, or HDDs. It's a waste of money.

do it if you have money tho
a c 86 K Overclocking
August 18, 2009 6:44:54 AM

Only cool the NB/SB if your overclock is limited by these temps. Cooling the CPU and GPU is where you get 90% of the benefit. No one cools the ram or HDD, it's silly and very expensive.

Build a good WC loop by planning for CPU and GPU. Pay attention to size for the rads. You ned a BIG case or your going external.

Read the stuff posted I wrote long ago, cya in a few weeks once you have an idea of what to do.

And asking here is a waste of time, there are much better forums for watercooling than here.

The info has ben posted, learn.
a b V Motherboard
a c 464 K Overclocking
August 18, 2009 1:46:09 PM

No, don't cool the HDDs, RAM, MOSFETs...if you feel it necessary, the NB should be your only consideration.