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Test System & Benchmarks

A Beginner's Guide For WaterCooling Your PC
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Now that we've gone through all this trouble to set it up, let's see what advantages this water-cooling system has afforded us.

System Hardware
Processor(s) Intel Core 2 Duo e4300
1.8 GHz (overclocked to 2250 MHz), 2 MB L2 Cache
Platform Biostar T-Force 965PT (socket 775)
Intel 965 chipset, BIOS vP96CA103BS
RAM Patriot Signature Line
1x 1024 MB PC2-6400 (CL5-5-5-16)
Hard Drive Western Digital WD1200JB
120 GB, 7,200 RPM, 8 MB cache, UltraATA/100
Networking On-board 1 Gb Ethernet
Graphics Card ATI X1900 XTX (PCIe)
512 MB GDDR3
Power Supply Koolance 1200 W
System Software & Drivers
OS Microsoft Windows XP Professional 5.10.2600, Service Pack 2
DirectX Version 9.0c (4.09.0000.0904)
Graphics Driver ATI Catalyst 7.2

We used a Core 2 Duo platform in our test bed because the e4300 CPU is a great overclocking candidate. This let's us push the CPU a bit and see how high the temps will go with stock air-cooling versus water-cooling.

Our methodology is simple: push the e4300 as far as it will go with its stock air cooler, then benchmark it with the water cooling system and compare results. As it turned out, the e4300 was willing to go much higher than its stock 1.8 GHz. With the CPU frequency increased from a stock 1800 MHz to an overclocked 2250 MHz, the e4300 easily handled the 450 MHz over clock without a voltage increase or other problems. However, the stock cooler proved it wasn't up to the task, with the CPU temperature rising to an uncomfortable 62 degrees Celsius under load. While the core would have gone higher, we weren't happy increasing the temperature at this point so we recorded the results and installed the water-cooling system.

Before we dig in to the load temperatures in detail, let's have a look at the idle temperatures:

Idle Temperature Graph

At idle, we're seeing a respectable decrease of about 10 degrees in CPU temperature when using water-cooling. This doesn't seem like a big deal at all when we consider that the stock cooler is a low-end part and that a premium aftermarket air cooler would probably be more effective. But we have to keep in mind that water cooling cannot bring the temperature down any lower than the ambient temperature, which in our case was about 22 degrees Celsius.

When we put the system under load-a 10 minute run with the Orthos stress tester-the water-cooling setup really shows its stuff:

Load Temperature Graph

Now things are getting really interesting. The stock air cooler can't even keep the CPU below an uncomfortably high 60 degrees Celsius, but the water-cooling setup is under 50 degrees at its lowest fan speed. Not only are we running cooler, but things are much quieter than the stock CPU cooler's fan.

With the water-cooling system running fans at full tilt, the CPU is kept under 40 degrees! This is 24 degrees cooler than the stock cooler at load, and is even on par with the temperature the stock cooler provides at idle. This is a very impressive result, although at this fan speed the water-cooling system produces more noise than I'd like. The fan speed is adjustable in 10 steps however, and I can't imagine needing to run it at full power in a real-world situation. Orthos pushes the CPU harder than anything I'd use on my PC other than benchmarking, but it's interesting to see how well the water-cooling system can theoretically perform.

Finally, let's focus on the results we've had with the video card. The X1900 XTX is generally a very hot beast, but we had one of the best air coolers money can buy on it: the Thermalright HR-03. After a 10 minute stress test with Atitool's artifact tester, what advantage did water-cooling provide?

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  • 5 Hide
    tailgunner07 , July 5, 2008 8:40 AM
    I have to disagree with the above comment, as a novice to water-cooling I found the article useful and informative. While I would not choose the Koolance kit, due to cost, I now have a better idea of how to proceed.
    I would however recommend using a kit as a starting point and modify it as needed rather than ordering a collection of parts and finding that they do not meet your requirements.
  • 3 Hide
    JDMH22 , July 6, 2008 1:58 AM
    I agree tailgunner07. I'd use a kit and then start adding more cooling blocks and accessories to meet my needs. I did learn more about water cooling in this article.
  • 1 Hide
    Anonymous , August 27, 2008 11:44 AM
    to ComputerCustomizer look before speaking this article was written over a year a go when people were shit scarred of water cooling setups.
    There weren't too trusty names in the market either. They used the koolance system as it was the easiest for n00bs at the time.
  • 0 Hide
    Anonymous , October 3, 2008 10:23 AM
    Koolance also the best water cooling system that are around, there's nothing wrong with this usefull review, don't use water cooling if don't have more buck for it.
  • 3 Hide
    Invid , October 10, 2008 6:13 PM
    I agree with Tailgunner, if one is a novice and feels they do not want to delve too deeply into the realm of water cooling then something like this is perfect and the article is helpful in that sense.

    For custom cooling and purchasing of individual items then this article will not help you but then again this isn't about picking and choosing individual components for custom cooling options.

    - Invid
  • 2 Hide
    Bot Series , October 11, 2008 10:53 AM
    What ever happened to the Cray idea of just dropping your PC into a fish tank full of Mazola?
  • 0 Hide
    jeweel , May 25, 2009 11:17 PM
    so what is the best water cooling system for money now?
  • 0 Hide
    coolronz , August 1, 2009 3:38 PM
    well looks like everyone agrees with tailgunner.. lol i was kind of concerned more about fittings and sizes.. i just got a HAF 932. theres enough room for an internal tri rad 120mmx3 on the top of the case, and a single 120mm rad on the back. i do like how they showed to T off after the CPU. i bought a TT pump, res and front temp gauge off eBay and am in the works of buying the rest of the parts. one thing that confused me is what the heck is a G1/4 fitting? now i get it, its just a common pipe thread size. and then you go to a 3/8" or 1/2" ID hose. would have been nice to get a little into that a little... but then again its a beginners article.. great job!!!
  • 0 Hide
    Anonymous , December 13, 2010 10:22 AM
    This is very useful. I believe all who indead would love to ave better and faster cooling will go for a kit like this, despite the cost.
  • 0 Hide
    Anonymous , April 14, 2011 7:16 AM
    I think its a great article. There is a lot to be learned here and the graphs are great too.
  • 0 Hide
    jewie27 , July 14, 2012 5:25 PM
    Corsair H100 FTW!
  • 0 Hide
    guardianangel42 , August 11, 2012 8:20 AM
    I love the progression of time from the date the article was written, to the first comment over a year later, and then the progressively newer posts until we get to jewie's post above.

    Guess Google is good for laughs as well as info!
  • 0 Hide
    4Ryan6 , February 13, 2013 9:20 AM
    I know this is an old article but I just want to address the misinformation as to the air flow direction of the picture of a diagramed stock motherboard air cooler, the air flow goes in the downward flow on the heat sink referenced in the design because the air coolers exhaust forced down on the motherboard is also cooling the motherboards voltage regulators.

    A little very left out fact of todays water cooling is providing airflow over the motherboards voltage regulators, when you remove the stock air cooler and replace it with a CPU water Block.
  • 0 Hide
    MJM87 , July 19, 2013 4:11 PM
    This is a beginner guide for setting up water systems, I readed this article to know how I short-jumper the power so I could get the current out of my power supply, without turning the power on (or without having power connected to motherboard).

    Anyhow, "this is achieved by shorting out pins on the ATX power supply to fool it into providing power to the liquid cooling pump without powering the motherboard."
    And then there is not given the pins which need to short out! Should I try every possible pins to be shorting out? ..maybe not, but this article pisses me off..
  • 0 Hide
    ruzbehdana , August 7, 2013 1:44 PM
    Any detailed information on DIY water block for 5970?