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How much radiator surface area to cool 4x 7970's to a decent delta of maybe, 10c?

Stu
Level 10
Hi guys,
Just ordering my EK waterblocks and backplates and now need some radiators, and its just occured to me that I am a little unsure as to how much cooling area I need.

Will either add this loop into my existing 360 rad, or create a sperate one just for the cards and then add the chipset into the CPU loop, not totally sure yet, but one thing is certain, I want to run teh fans at very low speed as i am aiming for near silence.

Currently, best value for money / performance seems to be the Phobya 1080 with stand.





I really would appreciate any advice here as I am about to press the good old "Buy it now" button. LOL

Asus Maximus IV Extreme Z
i7 3770K @ 4.4ghz
AMD 7970 HD x3 in TriFire @ 1200/1800.
2x 240GHZ OCZ Vertex 3 SSD & 1x 512Gb Vertex 4
16GB 2133mhz Patriot DDR3
Ennermax Max Revo 1500w PSU
Huge water loop with an internal EK 340mm & external Supernova 1260mm
Windows 7 64 bit.

Aquaero Fan control & monitoring
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8 REPLIES 8

Area_66
Level 11
Since you want to use low speed fan, I will create a loop for the GPU only and use push pull on this gorgeous rad ( I have the same one but quad only) You just have to find a way to vary the speed of the fans, what case are you using ? ( I know this rad will be outside )

xeromist
Moderator
A decent rule of thumb is at least 120mm per card. If you want to run low speed then you might consider 2x 360 low restriction rads with some fans on a controller.

I'm sure that external would work well; I'm just not a fan of detached rad boxes.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…

Area 66 wrote:
You just have to find a way to vary the speed of the fans, what case are you using ? ( I know this rad will be outside )


Thanks, am using an Aquaero controller so that is no problem.
The case is a Corsair 800d which already has a 360 in the roof for the CPU.

xeromist wrote:
A decent rule of thumb is at least 120mm per card. If you want to run low speed then you might consider 2x 360 low restriction rads with some fans on a controller. I'm sure that external would work well; I'm just not a fan of detached rad boxes.


Nor I normally, but my particular room setup will mean its totally out of sight behind the desk in a corner where it cant even be seen.

Asus Maximus IV Extreme Z
i7 3770K @ 4.4ghz
AMD 7970 HD x3 in TriFire @ 1200/1800.
2x 240GHZ OCZ Vertex 3 SSD & 1x 512Gb Vertex 4
16GB 2133mhz Patriot DDR3
Ennermax Max Revo 1500w PSU
Huge water loop with an internal EK 340mm & external Supernova 1260mm
Windows 7 64 bit.

Aquaero Fan control & monitoring

Area_66
Level 11
At least it's easy to clean when it's external, but easy to damage.

here a pic of my similar quad rad, it's in a Mozart TX case, the problem was to find screw. I get them from a hobby shop, they are use in model cars or planes

Stu
Level 10
Thanks guys, decided to go for the Phobya Extreme Supernove 1260 and 4x 200mm fans.

Asus Maximus IV Extreme Z
i7 3770K @ 4.4ghz
AMD 7970 HD x3 in TriFire @ 1200/1800.
2x 240GHZ OCZ Vertex 3 SSD & 1x 512Gb Vertex 4
16GB 2133mhz Patriot DDR3
Ennermax Max Revo 1500w PSU
Huge water loop with an internal EK 340mm & external Supernova 1260mm
Windows 7 64 bit.

Aquaero Fan control & monitoring

Stu @ MSD wrote:
Thanks guys, decided to go for the Phobya Extreme Supernove 1260 and 4x 200mm fans.


Oh MAN this is a sick RAD, I'm proud of you. this is a real ROG man......

Thanks, build pics here:
http://rog.asus.com/forum/showthread.php?11822-Obsidian-Trifire-3x-7970-EK-Blocks-1260-amp-360mm-Rad...

Area 66 wrote:
Oh MAN this is a sick RAD, I'm proud of you. this is a real ROG man......

Asus Maximus IV Extreme Z
i7 3770K @ 4.4ghz
AMD 7970 HD x3 in TriFire @ 1200/1800.
2x 240GHZ OCZ Vertex 3 SSD & 1x 512Gb Vertex 4
16GB 2133mhz Patriot DDR3
Ennermax Max Revo 1500w PSU
Huge water loop with an internal EK 340mm & external Supernova 1260mm
Windows 7 64 bit.

Aquaero Fan control & monitoring

Area_66
Level 11
Ah it's you .. I post in the other post but I just realize it was the Sick Rad you talk about here