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Thread: WATER COOLING FAQ
08-06-12, 09:08 PM #1
WATER COOLING FAQ
Alright. Once again, I see too many people asking the same questions over and over, and it seems like many folks don't like to read the stickies. (which I can understand). So while I will STRONGLY recommend the stickies be read. (and as Xander put it, you should read the stickies as if they are specifically written for YOU.) to give some general guidance, I thought I can list out some -general- recommendations if you are new to water cooling. Hence writing this short FAQ:
Q1, WHAT COOLANT SHOULD I USE?
- WE recommend Distill water over all coolants. Other coolants are really more cosmetic than anything, and scientifically, if you add any additives to water, you WILL lower its specific heat capacity, lowering cooling properties. So in general, you best choice is Distill water, you can buy in Groceries stores. That's right, you can drink it.
quick additional info: : http://www.overclockers.com/beginner...cooling/#fluid
Q2, What Biocide should I consider? How about Color Dyes?
- Silver Kill Coil (1 string), or CuSO4 (1 drop per L) will do. DON"T OD on CuSO4, some research shows that can accelerate tube aging, and CAN add deposits in waterblocks (especially when you have mixed metals.) Silver Kill Coil is in general easier to use, and also very reuseable. For that reason, I will suggest Silver before CuS04, just drop it in your res, and end of story.
As for Dyes, in general is it believed that dyes can eventually 'evolve' into a gooish material/deposit in your waterblock, and unless you are really unhappy about water being transparent, we recommend against it. Yes it is cool, but you will need to prepare to scrub every now and then. On the bright side, there aren't any serious reports about the dye-goo causing -serious- performance issues, so some dyes are safe to use. However, if you want color, why not color tubing instead.
Q3, How Much Radiator Space I need to use?
- General rule is 120 x 2 (120.2 = 240 rads) for CPU cooling only, then 120 x 1 for each additional component. The LONG ANSWER is much more detailed, and we need to talk about wattage, fan choice, and your overclocking target, but if you are not exceeding 1.45V Vcore for your CPU, 120.2 will generally be enough. AGAIN, the long answer requires lots of consideration, and this is general guidance only.
quick additional info:
Quick guide on picking radiators: http://www.overclockers.com/guide-deltat-water-cooling/
How to pick the right fan: http://www.overclockers.com/forums/s...light=fans+101
Q4, Which pump should I use? 655 or 35X?
BOTH PUMP WILL WORK FINE.
655 - quieter, less powerful, more suitable for loops with less components/restrictions.
35X - stronger, smaller, more suitable for tight space, and loops with more components. When in doubt, get the stronger pump, the 'so called' noise won't be heard much if you have fans running anywhere near your chassis. Many folks prefer the 35X series cause it also comes with PWM control, which makes it ultra easy to tune.
Q5, Is larger ID tubings better?
Short answer: YES.
Long answer: Not enough to matter. As flowrate's impact on heat dissipation is not very important when you use Water as coolant. Water's heat capacity is so large that even very low flow rate will almost never bottleneck the heat absorption, (unless near grinding halt) Most water cooling veteran using 1/4 - 1/2" ID, with 3/8 and 1/2 being more dominant of a choice. Larger tubings with thick walls is harder to bend around, but also harder to collapse, while smaller tubing might be more manueverable. The rest, is personaly taste, which means, you can really pick whichever.
quick additional info: http://www.overclockers.com/forums/s...d.php?t=515368
Q6, Where to place my reservoir?
and as long as you place before Pump, anywhere is fine in the chassis.
Reservoirs can be bought or self-made, they all function similar despite how they can look very different.
Q7, Are compression fitting better than Barbs?
Not really. In fact many people will tell you otherwise. Function wise, they are both tried and true, compression fitting might take less 'skill' to use, as with barbs you need to add a clamp most of the time, and over tightening the clamp can at some point cause a leak. (depending on the barb brand you use). If you use Barbs, a common trick is to use a slightly larger barb then tube, if you use 3/8 ID, then use 1/2 IB barbs, it will be a TIGHT fit. Let me list out the pro's and con's:
- less bulky.
- you can use them for thin wall or thick wall tubes.
- Over tightening can cause leaks.
- easier to be 'pulled' off.
- Easier to have peace of mind.
- very difficult to be pulled off.
- Need to match both ID and OD of tubes, can't be cross used.
- Bulky, hard for tight spaces at times.
Q8, Are my components OK?
If you decide to ask this question, please remember to list out the following:
- Your CPU/GPU model
- Your OC goal
- Your environment room temp
- Your computer chassis
- Detail component list, including fans you pick.
Cause otherwise, it is near impossible to give you a good answer.
We welcome such questions, but do give us the right info to help you.
Q9, MUST I bleed out the air bubbles?
YES. YES YOU MUST. Air bubbles can cause a series of things to a close loops, and none of them are good. When you are priming your pump (filling with water.) definitely include the following easy steps to bleed out the major air pockets:
1, Fill Water in res, let it flow to pump.
2, turn on pump, let water go 3/4 way down in res, add more water.
3, when the above has been repeated enough without the res level lowering. turn off pump. close the lid. Tilt your chassis 90' to the sides.
4, turn on pump again, you will likely hear lots of bubbling noises, let it run for a moment, make sure there's water in pump.
5, tilt chassis back up, you should see the res level dropped as air bubbles are freed. add more water.
6, turn off pump. tilt another direction. repeat steps 4-6, til you no longer see bubbles escaping.
7, Now you probably have bleed out 95% of the bubbles! the system is good to go.
*** don't be alarm if the water level drop slightly after first week, some bubbles takes forever to escape to the res, and that can happen.
*** the tilt test is a good way to test potential leaking points too... beware of leaks while doing test.
I am sure our Forum brothers will think of more to add here.
and I will edit the list as we go along... hopefully everyone looking for answer will have a more effective time doing so.
Last edited by bluezero5; 12-09-12 at 07:12 AM.
08-06-12, 09:47 PM #2
Nice work Blue. I hope this becomes a sticky. Its a good way to simplify things for those who are flustered with all the info they have to read.Project Akachi Coming Soon...
08-06-12, 09:54 PM #3
yeah, just trying to help folks that don't have time to read the stickies, but want some quick generic answers first. Hopefully that will help more folks.
08-07-12, 12:05 AM #4
my 2 cents....
a few topics you may wish to add, that although some are mentioned in the stickies, people miss them in the long reading style format and giant block of text that the beginners guide is. An FAQ is a more efficient way for people to "hunt and peck" to find that 1 answer to a single question they need....
I agree new members need to read the whole beginers guide, but an FAQ would be a good way for the 1 off question or after the sticky was read but before the build starts type of questions. ...
Q8 - How much PSU do I need?
A good start is this calculator
Q9 - What are some WC friendly cases that are easy out of the box to work inside?
Corsair 800D, Lian Li series, others...This is mentioned in the sticky - Beginners guide to watercooling
Q10 - Can I use any blocks with any rads, etc?
Something about galvanic corrosion and the no-no's of mixing metals. This is mentioned in the sticky - Beginners guide to watercooling
Q11 - What fans go best with what rads?
Goals and hardware needed, and budget, but something along the lines of say the SR1 with an appropriate low noise high volume fan like a typhoon. I'm no expert on this, maybe just give some common ones and some rules of thumb...
Q12 - What is the general maintenance?
Daily/weekly monitoring, 6 mo maintenance and full 1 year teardown. Here's Conodrum's nice write up
Q13 - Fittings?
Y are OK, T is bad. Also clamps vs. compression fittings. Also this is mentioned in the sticky ""
Last edited by laxin213; 08-07-12 at 07:26 PM. Reason: formating my ideas
08-07-12, 01:56 AM #5
yeah, keep mentioning what we should add to an FAQ, I can try to consolidate and see can it be made into a worthy quick post for new joiners.
08-07-12, 02:11 AM #6
- Join Date
- Jun 2012
Should i do, Rad,pump WATERBLOCK or rad,waterblock,PUMP
Should the pump be pushing in the block or sucking?
08-07-12, 03:08 AM #7Heat
Thermal take Core X9
Asrock Z97 Extreme6
i7 4790k @ 4.6ghz / XSPC Rastorm, D5 MoRa3 4x180 rad
G.Skill Ares 2x8gb 1600
EVGA 980Ti SLi under 2 x EK full cover Titan X
128gb M.2 SSD / Samsung 830 x 2 256gb SSD Raid-0 / 2TB Storage Drive
08-07-12, 03:26 AM #8
08-07-12, 03:33 AM #9
So.....which coolant is good to use then?
Sorry, couldn't resist.CPU> Intel i5-4670K @ 4.2GHz
MOBO> Asrock Z87 Extreme6
MEMORY> G-Skill Sniper 2x4GB DDR3-2133 Model# F317000CL11D-8GBSR
VIDEO CARD> Saphire Radeon HD 7850
SSD> ADATA S510 120GB
HDD> 2x Seagate Barricuda 500GB 7200RPM
SOUND DEVICE> Auzentech X-FI Forte
CASE> Corsair Carbide Series Air 540
PSU> Rosewill HIVE-650 650W
O/S> Win 7 Home Premium SP1
CPU COOLING> Corsair H80
08-07-12, 04:09 AM #10
- Join Date
- Jun 2012
most reservoirs are made out of low grade plastic. Not very good for withstanding high pressure or temperatures.
it's gonna be awhile to save up the money for the build. Don't expect it in a week or a month. For me it will take months to get that cash since i am 16
POINT PC rad cores are sealed with epoxy (i seen inside of one how? i cut one open.)
moto rads are brazed meaning the radiator core is melted with the tubes. No epoxy.
Not gonna bother with pictures of it. But it is epoxy, not even soldered.
Everytime i say moto rads are better people rage at me dunno why when it's the truth.
08-07-12, 04:17 AM #11
you can actually make your own reservior very very easily. For a quick design, you can look at Digg's geo-thermal cooling, he has a custom reservoir too. and yes, you don't need to buy an expensive rad at all, res is probably the easiest part to mod. I will recommend having a res... without 'can work', but it is just so much easier with a res. Without a res, bleeding bubbles can be a pain in the butt, and the res also helps you to deal with a few more problems. The only time I will use a T-line and no res, is only when I am trying to make it work in a space so tight that I cannot afford a res... just my 2 cents.
So.....which coolant is good to use then?
Sorry, couldn't resist.
08-07-12, 04:24 AM #12
- Join Date
- Jun 2012
Well? is the radiator pressure cap enough to bleed bubbles?
08-07-12, 04:34 AM #13
The radiator you have will work fine as a res, assuming it is placed in such a way that gravity will feed the pump water, in much the same way that pc radiators with built in fill ports work as both a rad and a res.
And they dont rage at you for saying moto rads are better in high temp high pressure situations. However, water cooled pcs are neither high temp nor high pressure. If your loop is done right, the water in it will be between 2 and 10 degrees celcius above ambient temperature. And to get enough pressure to burst a pc radiator, you will have to go out of your way to buy non standard water pumps that so far outclass the power needed to watercool a pc its laughable.5820k @4300 Asus X99 Deluxe
AMD R9 290 @ 1200/1400
Beyerdynamic DT770 pro
08-07-12, 04:36 AM #14
08-07-12, 04:39 AM #15
Nice work BlueZero!Main :
MoBo: Asrock Z97 Extreme4
CPU: i7 4790K@4.8GHz/1.33v - Raijintek Nemesis
Memory: 2x4GB Corsair 1866/Cl9
GPU: Sapphire Dual-X 280x + Dual-X 7970
SSD: Crucial M4 250GB
PSU: HiperM 1000W
HTPC : ASUS A55BM-Plus - AMD A4-4000 - iGPU
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08-07-12, 04:41 AM #16
- Join Date
- Jun 2012
And waterpumps? yeah car water pumps well most aren't ran by power/electric but by the ENGINE (on a belt) meaning it's probably 5000 GPH to be honest.
Like i said PC rads are sealed with epoxy (the core) while moto rads are melted shut (again the core not the tanks)
The moto rad might not cool as good as PC rads in lower temps because the walls of the tubes are thicker. It just saves a little money and looks cool at the same time
Thinking about bolting it to the case using L brackets or something.
Last edited by HD5830Gamer; 08-07-12 at 04:42 AM. Reason: Grammar fixes.
08-07-12, 06:32 AM #17
nice info blue
Mobo:asus P8Z77-V LX
RAM:16GB ddr3 dual channel (1866mhz)
CPU:Intel® Core™ i5 3570k@ 4.8ghz 1.28v (watercooled/delidded)
GFX card: GTX 780 @ 1300 mhz core boost, memory 7000mhz (watercooled+modded bios for 1.3v)
PSU:Corsair RM850 (overkill i know(
HDD: Primary: SSD, 2Xcorsair force 3 120GB RAID0, Storage:750GB + 1TB (7.2k rpm
OS:Windows 8.1 Professional 64bit
08-07-12, 08:08 AM #18
Nice Blue, thanks! A couple quick suggestions if you don't mind.
- In the fluid section, you could link to that part of the beginners' guide for more detail: http://www.overclockers.com/beginner...cooling/#fluid ).
- In the second question on radiator usage, you could link to Conumdrum's guide to delta T for more detail: http://www.overclockers.com/guide-deltat-water-cooling/ .
- In the question on tubing, you could link to the impact of tubing sizes thread: http://www.overclockers.com/forums/s...d.php?t=515368
I'd add this to the sticky thread, but nobody would read it.
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08-07-12, 08:15 AM #19
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08-07-12, 08:35 AM #20
Nice FAQ Blue this is really cool is something that I could have used to not bother you guys with questions after reading the Guides as I did get a bit lost with all the info in the guides.