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radiator for 6990

post #1 of 35
Thread Starter 
Ok, I searched the forums but couldn't find my answer anywhere.

I bought a MSI 6990 for $550 off some guy. (yes it works lol)

Well I plan on watercooling it. I already have my AMD X6 1100T water cooled but I am unsure on how much this loop is going to work.

I have my AMD cpu on a 240mm rad. It works very well. The cpu only puts out about 150w so the 240mm cools it very well.

Now my project for this watercooling loop is to use the 140mm back fan port to install a 140mm with the 6990 on it's own loop with it.

My question is will a 140mm with a 70cfm fan cool this monster?

Parts I ordered:

1 x Black Ice® GTS Gen Two Stealth 140 Highest Performance Radiator (GTS140) = $64.95
Fitting Size 1/2" Barb for 1/2" ID tube

1 x Alphacool NexXxoS ATXP Back Plate - ATI 6990 Series (11031) = $22.99

1 x Alphacool NexXxoS ATXP ATI 6990 Series (11028) = $120.99
Fitting Size 1/2" Barb for 1/2" ID tube

1 x Koolance Reservoir and Pump, RP-980BK, Black [no nozzles] (RP-980BK) = $138.99
Nozzles Add Nozzle Pair, G1/4 Barb [13mm, 1/2"] NZL-V13KGB

I have the koolance combo pump and rez already for my CPU so I got a second one to match it.

Anyone happen to know what kind of Wattage these rads are designed to cool? i read the 6990 uses 470watts of power...

PS: added most of my Rig to my profile. will add more once i get all these new parts put in
Edited by Wolfrages - 12/21/11 at 4:24pm
post #2 of 35

The CPU puts out 150w but with 240mm radiator?

 

6990 on AUSUM BIOS 450w with 140mm radiator?

 

You will need atleast 240 or 360 to run with lower RPM fans.

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ケンジ
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2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
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120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
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post #3 of 35
The 240 + 140 should be sufficient to cool your processor + 6990. You will see lower temps with more rad, but I would say this would work OK.
post #4 of 35
Thread Starter 
not too fussed with low temps, but more about silence. Since i got mixed answers al put in the 140 when i get it and al update you guys on the result
post #5 of 35
Quote:
Originally Posted by yanks8981 View Post

The 240 + 140 should be sufficient to cool your processor + 6990. You will see lower temps with more rad, but I would say this would work OK.

yes this might work, but the silicon inside his processor and gpu woudl literalyl start burning tongue.gif essentailly 1 360 rad cooling down a 6990 and AMD processor, i wouldnt recommend that, even at low rpms, i only know of ONE guy who did something similar to what you are doing except he was using an rx 360 and ultra high rpm fans cooling 2 x gtx 580's and an i7 950 oced. your temperatures will be phenomenal (the bad way) and wont be of ANY decrease, in fact maybe a increase..., if you want good 'slim' radiators optimised for low rpm fans, i suggest the new xspc ex series, for (this is my word for them biggrin.gif) 'fat' radiators, something like a xspc RX series should suffice. may i also ask which pump you are using. if you wanna sufficiently cool the metling gpu's and cpu, i'd go with something that is AT LEAST 480 in total (e.g. 2 xspc ex 240 radiators). also this is a WONDERFUL tool to use, you should try it to find out your delta temperatures, restrictiveness etc. http://martinsliquidlab.org/pump-and-radiator-optimizer-spreadsheet/
post #6 of 35
I run a 240+120 rad Hooke up on a 2600k at 4.8ghz and a 6990 at 1000/1500 at 1.25v, temps on the card barely goes above 50 degrees while playing games. Btw these components are all on the one loop.
post #7 of 35
Quote:
Originally Posted by gliggo View Post

I run a 240+120 rad Hooke up on a 2600k at 4.8ghz and a 6990 at 1000/1500 at 1.25v, temps on the card barely goes above 50 degrees while playing games. Btw these components are all on the one loop.

wow... and your fan speeds? remember this guy wants silence
post #8 of 35
Thread Starter 
ok, here my results

Useing these parts in there own loop

Room Temperature was at 24c

1 x Black Ice® GTS Gen Two Stealth 140 Highest Performance Radiator (GTS140) with XIGMATEK Cooling System XLF XLF-F1455 140mm (1000RPM, 63.5 CFM and 16dba)

1 x Alphacool NexXxoS ATXP Back Plate - ATI 6990 Series

1 x Alphacool NexXxoS ATXP ATI 6990 Series (11028) (useing AS5 on GPU units but using the memory thermal pads that came with cooler)

1 x Koolance Reservoir and Pump, RP-980BK, Black (RP-980BK) (on full power)

I ran Furmark 1.9.1 @ 1792X1344(max my monitor will run) with x8 AA for 1 hour

The Temptures stabled out after about a half hour of running it. idles at around 40c And maxed out at 77c.

Even I was shocked at this performance for just a single 140mm with a low RPM ran on it.

I can assume you will get better performance with a better rad/fan or faster pump, but as I stated earlier I was trying to work in compact and silence and that normally doesn't go hand in hand.

PS: I would not EVER recommend this loop for overclocked video cards. this is a good loop for stock cards but i would recommend a high RPM fan or a duel rad for overclocked cards
Edited by Wolfrages - 12/30/11 at 3:00am
post #9 of 35
What are you gaming temps matey? Furmark stresses harder than games doesn't it?
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post #10 of 35
Im currently running a 2600k clocked at 3.2ghz and a 6990 (stock clocks) in the same loop. I have a 360QP and rs240, I'm running YL mediums (loud for my taste but dont want to spend $100's for all the fans) and I figured I can use my fan controller to turn them down or up depending on usage
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