Cooling 3x 7950s

blackninja

blackninja

blackninja

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13 Nov 2007
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Looking to get 3 blocks and interconnects for 3 reference 7950 boards (latest Twin Fozr III Boost). These are to go on a Gigabyte X58 UD5 board so 3 x dual slot right next to each other.

I have a thermochill 120.3 rad in the case exhausting out the top - will this be sufficient? I also have a 120.2 rad that can fit in an intake position if necessary and a load of tubing ...

What blocks, interconnects and a pump just for the GPU loop? And do I need both rads fitted?
 
How thick is the rad? And if your running gpu aswell run The 120.3 and 120.2 also what fans are you using?

Pump wise go for a d5 vario best pumps you can buy and very quite.
 
If you run both radiators in a single loop you have enough capacity to shed the heat, the rule of thumb is 120 per component + 120 over. If you split the loop you may find you need another 120 of radiator.

Dual loops for the most part don't offer any value, if you do some searching with dual loop vs single loop you should find some well written items.

A D5 vario pump should do the trick, but depending how restrictive the gfx blocks are you may want to run a 2nd pump, this would also give you some redundancy.

I'm running a dual gpu block plus cpu + a quad & dual radiator off a single d5 without issue. You possibly want a flow meter, I know I shall be getting one soon lol.

To spec blocks, ek water cooling provide the cooling configurator to aid in selecting correct blocks http://www.coolingconfigurator.com/ this only covers ek kit though.

If you fancy blocks and your not sure post a link to the cards & the blocks.

martinsliquidlab has a old but still valid article on your 360 radiator http://martinsliquidlab.i4memory.com/Thermochill-PA-120_3-Review.html worth a read when your thinking about fans & flow rates.

I hope you have also got a fan controller factored in :)
 
Hi, instead of buying an other rad, sell your 360 add the extra and buy this rad Phobya Xtreme Nova 1080 Radiator mount it on a stand, a lot easier to install, cuts out all the work installing the rad inside a case. This is what l'm doing with my next custom cooled PC and have no worries about cooling.
 
Currently running:

3x EVGA 670 4GB FTW's (EK 680 CSQ blocks and backplates/EK Triple link), 3930K (Koolance 370), RIVE MB Blocks (Koolance ASR4E)

On a RX360/RX240 loop with 1850GT's running at ~1100rpm with a D5 and no issues with temps and it's pretty quiet.
 
Yeah deffo add that extra rad in, my 120.3 got warm with just 2 full cover blocks on with 3 you would need fans going pretty hard.
 
blackninja said:
Looking to get 3 blocks and interconnects for 3 reference 7950 boards (latest Twin Fozr III Boost). These are to go on a Gigabyte X58 UD5 board so 3 x dual slot right next to each other.

I have a thermochill 120.3 rad in the case exhausting out the top - will this be sufficient? I also have a 120.2 rad that can fit in an intake position if necessary and a load of tubing ...

What blocks, interconnects and a pump just for the GPU loop? And do I need both rads fitted?
Click to expand...

Post doesn't say if your CPU will be in the loop or just the GPU's? If its just three HD7950's then the 120.3 will be fine but if your CPU will be too (and it seems strange not too) then you should add the 120.2 as well.
 
ubersonic said:
Post doesn't say if your CPU will be in the loop or just the GPU's? If its just three HD7950's then the 120.3 will be fine but if your CPU will be too (and it seems strange not too) then you should add the 120.2 as well.
Click to expand...

GPU only is the plan - why is that so strange? My i7 920 CPU does 4.2 on air quietly ... my GPUs overclocked with stock coolers are not quiet at all and distribute lots of hot air throughout my case!

I do have a block for the CPU as it happens, tried it years ago and got a measly .1GHz extra for my efforts so stuck with air :D
 
Yeah these graphics cards are noisey buggers, for me water cooling on them is a must if ya like a quiet PC, whereas the CPU fans are very quiet. If ya going for quiet get that extra rad stuck in though, can keep all ya fans running nice and slow then.
 
blackninja said:
GPU only is the plan - why is that so strange? My i7 920 CPU does 4.2 on air quietly ... my GPUs overclocked with stock coolers are not quiet at all and distribute lots of hot air throughout my case!

I do have a block for the CPU as it happens, tried it years ago and got a measly .1GHz extra for my efforts so stuck with air :D
Click to expand...

LoL - measly .1GHz extra, it depends on the 920 all are not equal , l'v had mine upto 4.5ghz stopped at that[me chicken]. Seems a waste of the CPU block plus l did not what a big chunk of metal hanging of my mobo. Also what's quiet to you might not be with others, the only thing l can here is my DVD-writer.
 
blackninja said:
GPU only is the plan - why is that so strange?
Click to expand...

Its just normally when people go to all the effort of setting up water cooling its not normal to leave the CPU out, but in your case it may be of benefit as the 120.3 will be fine with 3x HD7950 (assuming the fans aint junk) whereas with the 920 as well it would have been an issue, you can add the 120.2 as intake as well but exhausting hot air into the case may cause issues for the CPU air cooler maybe.
 
don't have one rad on intake and one on outake, youll be drawing cool air across one rad and the blowing tbe hot air over your other rad, massively reducing its effectiveness, have them both on blow and fit other intake fans like a big side panel one
 
I have 2 7950s on a 360 and it is too hot for me, I'm adding a 200mm as well.

I'd add that 240 and leave the CPU out if I were you.
 
Yeah i agree, and dont worry about using a rad as intake, im using my 120 as an intake, if ya have enough rads the air coming out wont be hot, hot air means ya water in ya loop is hot, my loop temp settles down at about 10 degrees warmer than room temp with constant gaming.
 
Right, current plan is for GPU only and see how to add in the 120.2 as I'll clock em as high as they'll go subject to temp which means a few more volts and so more heat to dissapate ... I will see how to put that rad on the outside as I have no space for a 120.2 exhausting however I do have 2 x 12cm exhausting in seperate locations so maybe get 2 x 120.1 rads ? Then I'll have 120.5 capacity which should be enough. I'll re-use existing fans and if too loud will invest in modern quiet ones, about time probably :)

These are the fans I had on my watercooled thunderbird, then barton, then opteron, then Q6600 and now aircooled 920 so they have been at it for a few years - along with my case as it happens!

I don't need silence for this - just do not want a bunch of GPU fans at it big style :)

Looking to get 3 of these:http://www.overclockers.co.uk/showproduct.php?prodid=WC-251-EK&groupid=962&catid=1520&subcat=2327

Do I need seperate bits to connect them together in TriFire config?


For reference I had the cooler lifted as shown here: http://forums.overclockers.co.uk/showthread.php?t=18491407


Also, before I commit to buying more stuff - has anyone tried an Antec kuhler type of cooler on these cards? There is a metal plate on the RAM and other bits from what I can see that should mean I don't need RAM sinks ... a strategically placed fan should do methinks.
 
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