Below is a disorganized build log of my computer since March 2011. It was during the time of big bitcoin mining profits, but also the time of GPUs running at 100% load 24/7. My 6970s were quite loud and annoying, so I decided to finally achieve my dream of owning a liquid cooled machine and not have to listen to GPU fans running a high speed all the time.
Hopefully this thread can serve as a resource for anyone new to liquid cooling. A lot of very intelligent and knowledgeable members offered their opinions and helped me get started on the right foot.
OP:
My system is in my sig. The parts I want to put in my loop are my dual 6970s (really flashed 6950s). I have recently started doing some distributed computing, which fully loads the cards and at 65% fan speed they are running between 90-95C. This displeases me as I worry about the VRMs, also the fan noise is starting to get on my nerves. If possible I'd also like to overclock, but my main goal is silence, stability, and longevity of the cards. The case I have is a HAF 932, so I have plenty of space to work with and am thinking about going 3x120mm radiator on the top.
Here are my parts:
updated part list in post 16
Also coolant? I'm willing to make my own, I'm just not sure what additives are required to turn distilled water into proper coolant.
Thanks guys.
<3
Status: Done. Load temps from 90C to 45C and very quiet 😀 Pics:
Aftermath: 3/25/11
Reversing the loop hasn't happened yet. I have started working on overclocking the video cards. Been able to get my 6970s up to 970 core @1.240V. Temps are around 45-50C. Hopefully I can break the 1GHz barrier 😀
3/26/11
The tweaking begins, aigomorla was right.
Just ordered:
http://www.frozencpu.com/products/10...ack.html#blank
and
http://www.frozencpu.com/products/10..._D14SM-12.html
When these arrive the loop will be reversed, going:
pump -> CPU -> 140mm Radiator -> GPUs -> 3x120mm Radiator -> Res -> Pump
4/5/11
new loop up and running:

7/16/11
Separating my loop. Having my heavily overclocked 6970s heat my CPU is going to get old, especially later this year when I switch platforms and go for a tri-fire setup of 7xxx series. I am removing my 140mm radiator and adding 2 slim 2x120mm radiators on the side panel of the HAF. I took measurements, and two of these radiators will fit on the side panel of the HAF.
http://www.frozencpu.com/products/12...W4u6&mv_pc=153
Then using these fans
http://www.frozencpu.com/products/91...W4u6&mv_pc=157
I'm able to keep everything in the loop internal. At least by my measurements. I'll be copying Vivi and using this Res from Koolance to fit both of my 655s.
http://www.frozencpu.com/products/12...W4u6&mv_pc=154
Loop 1, CPU
2x120mm radiator, MCP655 pump, Swiftech Apogee XT, Koolance Res.
Loop 2, GPU
2x120mm radiator, 3x120mm radiator, MCP655, EK-FC6970, Koolance Res.
I'll be getting rid of my HW Black ice SR-1 140, so pm, or check for it on FS/FT
7/29/11
New loop up and running.
CPU loop: Max 40C
GPU loop: Max 45C on both cards
Both loops idle just slight above ambient.
(Ran out of pics in the post. This setup was stupid. Don't mount radiators on the side of your case without quick disconnects)
11/16/11
I dropped my case and it bent badly. Picked up a 800D on sale. Just finished building in it:

1/9/12
New radiators! Sticking with the RP-452x2. It works, it just is annoying initially. So assuming you keep your rig assembled for long periods of time, it doesn't matter that much. Maybe after this I won't feel the need for more tweaking. (yeah right..)
1/10/12
RP-452x2 Rev 2.0 on its way!
https://www.koolance.com/water-cooling/product_info.php?product_id=2025
3/25/12
140mm rad mounted on the bottom! NB PK-3 on its way to replace slow stock fans.
7/20/12
Caselab M8 update
GPU Loop: D5, EK XTX 360, Swiftech MCR320, EK FC-7970 Copper/Acetal, 6x ap-15
CPU Loop: D5, XSPC Raystorm, Magicool Slim 240, 2x Ap-14
Eventually going to add my EK XTX 120mm in there and connect it to the CPU loop. Just gotta plan the tubing and get the necessary fittings. Also need another GT. Also planning to replace that slim 240mm rad with an EK XTX 240.
Hopefully this thread can serve as a resource for anyone new to liquid cooling. A lot of very intelligent and knowledgeable members offered their opinions and helped me get started on the right foot.
OP:
My system is in my sig. The parts I want to put in my loop are my dual 6970s (really flashed 6950s). I have recently started doing some distributed computing, which fully loads the cards and at 65% fan speed they are running between 90-95C. This displeases me as I worry about the VRMs, also the fan noise is starting to get on my nerves. If possible I'd also like to overclock, but my main goal is silence, stability, and longevity of the cards. The case I have is a HAF 932, so I have plenty of space to work with and am thinking about going 3x120mm radiator on the top.
Here are my parts:
updated part list in post 16
Also coolant? I'm willing to make my own, I'm just not sure what additives are required to turn distilled water into proper coolant.
Thanks guys.
<3
Status: Done. Load temps from 90C to 45C and very quiet 😀 Pics:

Aftermath: 3/25/11
Reversing the loop hasn't happened yet. I have started working on overclocking the video cards. Been able to get my 6970s up to 970 core @1.240V. Temps are around 45-50C. Hopefully I can break the 1GHz barrier 😀
3/26/11
The tweaking begins, aigomorla was right.
Just ordered:
http://www.frozencpu.com/products/10...ack.html#blank
and
http://www.frozencpu.com/products/10..._D14SM-12.html
When these arrive the loop will be reversed, going:
pump -> CPU -> 140mm Radiator -> GPUs -> 3x120mm Radiator -> Res -> Pump
4/5/11
new loop up and running:

7/16/11
Separating my loop. Having my heavily overclocked 6970s heat my CPU is going to get old, especially later this year when I switch platforms and go for a tri-fire setup of 7xxx series. I am removing my 140mm radiator and adding 2 slim 2x120mm radiators on the side panel of the HAF. I took measurements, and two of these radiators will fit on the side panel of the HAF.
http://www.frozencpu.com/products/12...W4u6&mv_pc=153
Then using these fans
http://www.frozencpu.com/products/91...W4u6&mv_pc=157
I'm able to keep everything in the loop internal. At least by my measurements. I'll be copying Vivi and using this Res from Koolance to fit both of my 655s.
http://www.frozencpu.com/products/12...W4u6&mv_pc=154
Loop 1, CPU
2x120mm radiator, MCP655 pump, Swiftech Apogee XT, Koolance Res.
Loop 2, GPU
2x120mm radiator, 3x120mm radiator, MCP655, EK-FC6970, Koolance Res.
I'll be getting rid of my HW Black ice SR-1 140, so pm, or check for it on FS/FT
7/29/11
New loop up and running.
CPU loop: Max 40C
GPU loop: Max 45C on both cards
Both loops idle just slight above ambient.
(Ran out of pics in the post. This setup was stupid. Don't mount radiators on the side of your case without quick disconnects)
11/16/11
I dropped my case and it bent badly. Picked up a 800D on sale. Just finished building in it:

1/9/12
New radiators! Sticking with the RP-452x2. It works, it just is annoying initially. So assuming you keep your rig assembled for long periods of time, it doesn't matter that much. Maybe after this I won't feel the need for more tweaking. (yeah right..)
1/10/12
RP-452x2 Rev 2.0 on its way!
https://www.koolance.com/water-cooling/product_info.php?product_id=2025
3/25/12
140mm rad mounted on the bottom! NB PK-3 on its way to replace slow stock fans.
7/20/12
Caselab M8 update
GPU Loop: D5, EK XTX 360, Swiftech MCR320, EK FC-7970 Copper/Acetal, 6x ap-15
CPU Loop: D5, XSPC Raystorm, Magicool Slim 240, 2x Ap-14
Eventually going to add my EK XTX 120mm in there and connect it to the CPU loop. Just gotta plan the tubing and get the necessary fittings. Also need another GT. Also planning to replace that slim 240mm rad with an EK XTX 240.
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