Koolance Exos Watercooling

Water Cooling by biCker @ 2003-05-11

A while ago, I tested the Koolance PC2-C watercooling solution. Today, the Exos system has landed on my desk. The PC2-C is a complete case with watercooling, but the Exos lets me choose my own case with the benefits of a complete watercooling.

Introduction

Introduction:

The last thing that can be said about the people at Koolance is that they don't stay in touch with the computer market. When water-cooling products started to flood the shops, they hopped on the bandwagon and introduced a line of cases with a build in water-cooling system. Today, more and more demanding users create there own modded case and are just looking for a good cooling solution, nothing more nothing less. So Koolance presents us today with the Exos, a good looking and complete water-cooling kit.

Madshrimps (c)


When you look inside the box you'll find a very complete set:
For starters the black beauty of a cooling unit with three (!) 80mm fans, pumps, reservoir, radiator and the led temperature read-out unit with fan control.

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PumpS, a spelling error? No, inside the reservoir Koolance build two pumps, one for intake and one for outlet so whenever one pump fails, there's still some water movement so your cpu won't fry.

Madshrimps (c)



You'll also find tubing (for inner and outer use), a bag filled with ready-to-use cooling fluid, the slot interface, a power cable that feeds the goodies, a temperature probe, some nozzles and finally all the mounting aids like rubber pads etc...

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Madshrimps (c)

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Madshrimps (c)

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I've just started writing this article and I already told you a lie, way to go no? The Exos kit isn't complete when you buy it :( If you're really want to use it right away, a cpu water-jacket will come in handy. So, don't forget to order the cpu200-g cooler which can be used for both AMD and Intel processors. Wim @ Loveno was nice enough to throw in a chipset jacket (that will be used to cool down the good old Kyro 4000 XT) for this review also. When you consider water-cooling your gf4, you can't use this one, you need to buy the graphic cooler due to the bigger size of the GF4’s GPU.


Madshrimps (c)

Madshrimps (c)


The unit itself measures 7.25" 3.75" 18.5" (18.4cm x 9.5cm x 47cm) WxHxD and weighs about 7.3 pounds (3.3kg). Koolance also provides some options like attachments for frequent moving systems, a chipset spacer kit and even an adapter kit for Xenon support!

Ok, now that you know what I'm talking about lets move on to the next page and start assembling this beauty

Mounting the Exos

Mounting

Impatient as I am, I find reading any manual a big waste of time ;) but in this case I quickly backtracked and took a look in the well illustrated 24 pages thick (thin?) booklet. Just making sure I don't skip any more steps (like placing the thermal probe on the CPU jacket) and especially for connect the electrical wiring correctly.

For starters, you have to find out how long the tubing needs to be and cut it to the right length. Then put the tubes on the water jackets, feed them thru the slot interface, close the clamps and part 1 is finished. Sounds easy, but it's been a long time since I heard myself swearing like this.
The clamps are a real pain in the ass, although closing those looks really easy but in fact in some positions you need four hands (thx JMke) and even then you're likely to destroy them. I solved this by rushing of to a local car parts dealer and buying those good old clamps you can tighten with a screwdriver.

Madshrimps (c)

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After connecting the tubes, it's time to put the CPU jacket (isn't it shiny btw?) on your CPU as well as any other optional jackets or hard disk coolers.

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On the next picture you can see the CPU jacket mounted on an AMD CPU, but rest assured that you don't have to buy any other retention modules to make it fit on a socket 423/478. Every piece needed for mounting on any possible main board is included with the jacket!

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Place your main board back on its tray and put it in the case. The slot interface uses just one pci slot so installing this is very easy. For the next part the manual comes in handy: hooking all the wires up.

You'll find 6 headers on the interface: one for power, just connect this to an empty power outlet of your cpu, one for the thermal probe (which you really should have installed by now ;) ), one that goes to the power switch on your main board, one that connects to the power button on your case and two connectors for additional fans. "Why are there so many connectors?" I hear you ask.
Well, engineers @ Koolance aren't stupid: for powering the pump on a home build system you often need 220/110V, forgetting to power the pump at the same time as your pc will cause a disaster if left running like that for an extended period of time. Not so with Exos’ system, the pumps run on 12V and thanks to the electronics on the slot interface they always starts up together with your system.

Connecting the inlet and outlet tube to the cooling unit is a breeze thanks to the two quick release nozzles that fit right into the build-in reservoir/pump.

Madshrimps (c)

Madshrimps (c)


Next we start filling and bleeding the system. This one is easy, just turn the cooling unit upside down, open the refill tap with a coin and empty the coolant pack into the reservoir. Probably the whole content won't go in there but don't worry, it will shortly! Close the refill tap again and connect the external power cable to the interface. Then hotwire your power supply (pins 4 & 6, usually green and black wire) with the included jumper wire. The PSU powers up, together with the pumps and starts bleeding the system. After two or three minutes, the level in the reservoir might have dropped so you'll need to add the remaining coolant.
This is also a good time to check for leaks, let her hum along for 15 minutes just in case... After this time, you can remove the jumper wire again, connect your main board wires, pci cards etc back the way it was and close your case.

Madshrimps (c)


Madshrimps (c)Madshrimps (c)


By now, the day has shortened with one hour, unless you didn’t go to the car parts shop to buy some decent clamps. The urge to power up the pc is growing and growing so what are you waiting for? Lets hit that power button and continue to the next page.

First run of the system

First run:

Before powering up, let me introduce my system: since I often use my PC at night (like most of us  ), noise has become a priority, the less the better. For this reason, I’ve installed an Alpha Pal heat sink in combination with a Papst 8412 ngm pushing 34.1 cfm at a noise level of 26db and keeping my PIV 2.26 cool. Usually a ti4600 lightens up my night but for this occasion I used a kyro 4000xt which has a loud blue orb on it, due to overheating after some heavy gaming (+1 hour) with stock cooling. A Seagate Barracuda IV and some Corsair pc3200 ram together with a few pci cards make my PC into a full running system.

For testing the Exos, I ran Hotcpu with every option selected for an hour to be certain the CPU really got stressed to its maximum.

With this info out of the way, let's fire here up...

Hmmm, what is wrong here? It seems my system isn't powering up... Oh wait, I'll shut down the dryer & washer that is in the same room and both make quite some noise but normally doesn't prevent me from hearing the system running.

Indeed, the lack of noise is the first thing I noticed when powering up. My personal pc has quite some noisemakers in it: the gpu fan, one 120 mm case fan, two 80 mm case fans and the CPU fan off course. I did shut down the case fans before booting and since I installed a gpu water-jacket also the only fans spinning are the two power supply fans (changed by ultra silent Papst ones) and the three Koolance fans. In fact, there are still 5x 80 mm fans spinning at low speed but man, what a difference...

For this first test, I had everything running at stock speeds

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As you can see in this diagram, the Exos takes temperatures to a lower level by quite a bit!

Making here sweat

Making her sweat

Till now the Exos does what I expected it to do, lower the noise level and cool the cpu and other peripherals in a decent way. But how will it react when we turn on the heat? A restart combined with a quick tour around the BIOS will learn us.

I already know that running my P4 at 2700 mhz on air is no problem, temperature stays within the limits going from 45° idle to 58° after some heavy gaming or stressing. Again, I used hotcpu to stress the pc for 1 hour, the results are even more stunning here:

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Now the Exos is showing its worth every cent/penny/dime/euro. The temps went up, but only slightly compared to how they rise when using my Alpha Pal and low noise Papst ngm. While idling, CPU temp never got over 40°c and stressed it never rose above 45°c!! Remember that I hate noise and I still have the Koolance fans running @ only 45% power!!

Conclusion

Conclusion:

I'm about to wrap this review up but before I do so, one last screenshot taken after 2 1/2 hours of stressing with every possible fan in the Exos and my case running @ 100%

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Pretty impressive for an all-in-one water-cooling solution no? I must say though the noise was killing my ears while doing this test ;) .


The time I passed writing this review certainly wasn't a waste of time. It has been a while since I last had a water-cooling setup to play with and I must say that the silence introduced by the use of the Koolance Exos really is astonishing and performance wise there is nothing to complain about! Probably you can assemble units that cool your system even better, but then you'll be searching, comparing and doubting for quite a while not to mention how much more money you will have spent!!

Pros:
Priced @ 330 euro (Exos+cpu cooler), some products are more expensive and underperform
Very complete kit
Own case can be kept, without any modifications
cooling system always starts up at system boot
The entire cooling system only requires 8-10W

Cons:
Contra Points The clamps to secure the tubing could be easier to close
Contra Points Loud with fans @ 100%



For die-hard overclockers performance might be a little under expectations but for those amongst you that aren't shy of a little speed gain without having to deal with cooling problems this is certainly a must have!

So, that's it for today folks, I hope you found this review useful, thanks for your time and a "big Teletubbie hug" to Wim @ Loveno for making this review possible ;)

Any comments can always be posted in this thread at forums (no registration)

biCker
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