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Project Viper (2 loop 800d build)

mooyaart

n00b
Joined
Jun 5, 2010
Messages
10
Hi, This was my first attempt at water cooling and I think it went quite well (let me know your thoughts). It was about 25 hours build time.

The computer specs:
Modded 800d case
Asus P6T Deluxe v2 Mobo
i7 920 oc'd to 4.2GHz
6GB 1600MHz RAM
120GB OCZ Vertex 2 SSD
3x 1TB HDD
2x ATI 5870 (reference design)
Blu ray drive
Corsair 1000W PSU

I have also got triple LED screens (3x 24") which makes for some epic gaming:
img24620.jpg


You can see the original case in this photo which was a Antec P183 case - a good and quiet case but very unsuitable for water cooling.

The water cooling spec:
XSPC 3/8 ID 5/8 OD High flex tubing - red / UV orange
XSPC 5.25 dual drive bay reservoir for two Liang DDC pumps
2x Liang DDC-1T pumps
Swiftech Apogee XT extreme CPU waterblock
XSPC RS Series 360 Radiator (CPU loop)
XSPC RX Series 240 Radiator (GPU loop)
2x XSPC Razor full cover water block for ATI 5870 (reference design only)
Variable Dual Slot SLI & Crossfire VID fitting (black nickel)
5x 1450rpm Gentle Typhoon fans
4x Bitspower 45degree rotary fittings
14x Bitspower compression fittings for 3/8 - 5/8
2x Inner thread T fittings
2x Bitspower blanking plug
Mayhems Ultra Pure H20
PT Nuke

Other stuff:
Arctic cooling MX-3 thermal compound (for GPUs and CPU)
FlexLight SMD UV LED Strips (60cm long)
5mm Twin Ultra bright RED LEDs (for the reservoir)
Magnetic Fan filters (120mm and 140mm)
Lian Li Aluminium DVD Cover (modded)

Some advice for people thinking about doing similar builds:
-There are two types of 5870 out there, reference and non-reference make sure your GPU block matches the type of 5870 you have got.
-Avoid cold cathodes!! I got one and the power inverter that connects molex to the cold cathode burnt out. I have looked online and this is not uncommon, they can sometimes damage other components while they are at it as well. The best alternative is LED strips they do just the same job, are 100% reliable and can connect directly to molex.
-If you are going crossfire/sli get dual loops.
-Make sure you get a t-line or quick disconnects in your loops as they are pretty essential for draining and maintenance.
-Use distilled water with PT Nuke / Silver kill coil, stay away from pre-mixed fluids - they are bad for your loop no matter how cool they look. You can achieve a similar effect through coloured tubing.
-Mobo blocks are basically pointless and just restrict flow, RAM and HDD blocks are even more pointless.
-The 800d case is an awesome case for water cooling loops, I highly recommend it.

The plan:
Corsair_Obsidian_800D_02.jpg

The plan was to use the top 360 rad for the CPU loop and the bottom 240 for the GPU loop with the the reservoir-pump combo taking up two 5.25 bays.

It all comes through in the post:
img0273ce.jpg


The 800d next to my P183:
img0286eg.jpg


The 5870 water blocks:
img02770.jpg


The CPU block:
img0279u.jpg


The Reservoir with pumps installed:
img0280yx.jpg


The 240 Rad with awesome GT fans attached:
img0288s.jpg


In order to fit the 240 radiator into the bottom, you need to remove the lower hdd bay and cut out a section of the bottom for airflow (bye bye warranty!). This can both be achieved using a dremel and I recommend you follow the instructions here:
http://www.youtube.com/watch?v=a9Ovlo1uwk0

It should look like this when it's done (I forgot to take a photo of mine):
wet_paint_mod_3_small-1.jpg


You can just see the cut out here:
img0287t.jpg

At the end of this I used one of the 140mm magnetic fan filters to ensure this intake was filtered.

One of the 5870s stripped down in preparation for attaching the GPU block:

img0282pk.jpg


The left overs:
img02830.jpg


After having looked a lot of water cooling builds on the internet I decided to do something a bit different and put as much of the tubing as I could in what I thought was the cavernous space behind the mobo plate on the 800d.
Here is a pic of me starting off with the tubing:
img0292is.jpg

img0293v.jpg

Note it is essential to have enough tubing that the reservoir can be moved out far enough to allow for refilling.

I then installed the CPU plate onto the mobo:
img0311kf.jpg


Makes the mobo look so small!:
img0313z.jpg


Bleeding and leak testing CPU loop:
img03140.jpg


Installation, bleeding and leak testing the GPU loop as well:
img0320ao.jpg


Bleeding and leak testing complete:
img0325tl.jpg


Shot of the back (t-lines visible):
img03230.jpg


Everything else installed:
img0331yi.jpg

Notice how the wires are not very visible, I achieved this buy using my trusty permanent marker to colour them all black, it was time consuming but worth it. I think it looks nicer than sleeving.

The back end:
img0332cx.jpg

This looked horrible but because of the tubing at the time I didn't have much choice, there turned out to be very little space for everything to fit in.

I then used the computer for about a week before I took it apart. Why? Two reasons:
-I couldn't live with myself for having done such a fantastic wiring job on the front but such a terrible job at the back.
-The 5.25 reservoir-pump combo is a very tight fit into the 800d case and it was vibrating a lot, using the 800d as a sounding board and was disappointingly loud.

This of course meant removing all wiring and draining the loop, boy was I glad I installed those t-lines!

Here is what it looked like afterwards:
img0344t.jpg


This is what I did to the 5.25 bays to ensure the reservoir would stay quiet:
img0343u0.jpg

I removed the metal lips for one of the 5.25 bays and added foam strips to where the reservoir would make contact with the case. It is now completely silent and I really have to concentrate to here my desktop running now.


Finishing Touches:

Added the UV LED strips.

I also got the Lian Li Aluminium DVD cover, modded it with my dremel so it would fit inside the 800d to cover the blu ray drive. I think it improved the look of the case.
You can see it below the reservoir:
img03460.jpg


img0347gs.jpg

img0349l.jpg

img0348fj.jpg


Temps:
Before all this I had the stock cooling on my 5870 and a h50 with 2 GT 1850rpm fans on it. Average room temps about 18 degrees.

Used to idle about 40 degrees CPU and 55 degrees GPU. Load temps were about 75 degrees CPU and 80 degrees GPU.

Now idles at 28 degrees CPU and 30 degrees GPU (average of the two). Load temps are now 60 degrees CPU and 40 degrees GPU.


Thanks for viewing!!
 
Very good for being your first attempt. You really did your hw
 
That upper rear fan should not be intake. You're going to cause air turbulence. Nice job, other then that.
 
Thanks Ruoh, I changed it round and saw a drop of a couple of degrees on the cpu and mobo temps.
 
Sweet build! Was there a second pump/res for the video card loop or am I missing something?
 
I am using some aspects of your build for my own build; yours looks very well done. I have a couple questions though:
• why did you use the 360 for the cpu loop and not for the gpus?
• how did the compression fittings work out for you? Hard to install or easy? Can you compare them to barbs?
• how did you decide on your tubing ID/OD? How has 3/8 and 5/8 worked out for you so far?

Thanks
 
Last edited:
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