Heat Dissipation on SLI GTX 780 TIs

[ChronoCabal]

Hi guys,

After some advice if I may!

I'm considering an upgrade to my graphics cards, as I've always fancied the Direct CUII coolers from ASUS and I'm a sucker for overkill power.

I'm currently running two 680s that operate a blower-type design, allowing them to exhaust the hot air out of the rear of my case.

I've of course noticed that the 780TI with the Direct CUII is a standard fan cooler, which will dump the majority of its heat into my case.

My concern and therefore my question is would this be an issue? Would the difference be That apparent? I don't want to go cooking my other components! I've attached a pic of my fan config - all Corsair AF120s, barring the two above the rad which are static pressure models.

Thoughts and opinions welcome!

 

[JR23]

I went from having two reference cooled GTX780 Superclocks to two ACX cooled GTX780 Classifieds and I would have to say for the money the reference coolers were a more 'refined' overall solution. Although out of the box the Classys sat 100 MHz higher and the bottom one was cooler they did get loud when gaming hard compared with what I was previously used to. It's a complex trade off that has resulted in me going down the water cooling route which in all fairness I had wanted to do from the start.

I think you will note that both cards idle much cooler and the bottom card will run cooler however the top card will get louder trying to keep up. When I had reference cards they would sit at 78c and 81c boosting away pretty much all day quite quietly, the bottom card always ran ~50MHz faster. With ACX coolers the bottom card would typically run around the high 60's and the top card somewhere real close to the temperature target of 80c but still holding the maximum boost clock. So while the end result was they both boosted higher, ran cooler and delivered greater performance it was ultimately just a bit louder. It really depends on your preferences both solutions definitely deliver but the blowers have the edge in terms of refinement. I'm not going to try and explain this any more as it may result in a Tom trying to shut the door on an Antec situation, hopefully you get what i'm saying.

JR

 

[Dark NighT]

A few years back i had a radiator in the roof as well and then got 2 msi 570's twin frozr cards and the heat dump did affect the water temperature by quite a bit but since i didnt overclock my i7 920 it wasnt a big problem for the temps on the core.

 

[ChronoCabal]

Thanks for your input, guys!

Glad to hear that you finally decided to go down the proper WC route JR, a rig of your caliber is crying out for it!

After giving it more thought, I think I'm going to research down the water-cooled GPU route. I'm loosely thinking a single loop still, but having an additional 120/140.1 rad at the front between the CPU and GPUs, with the GPU outlet then returning to the existing 140.2 rad up top before returning to the res. EVGAs 780TI Hydro Copper is available for pre order on Scan.. :drool:



After than creating a whole new thread.. does anyone have any thoughts on this or my proposed loop config? The pump is a EK-DCP 2.2 12V DC model.

http://www.ekwb.com/shop/pumps-and-accessories/pumps/ek-dcp-2-2-12v-dc-pump.html

 

[JR23]

Thanks for your input, guys!

Glad to hear that you finally decided to go down the proper WC route JR, a rig of your caliber is crying out for it!

After giving it more thought, I think I'm going to research down the water-cooled GPU route. I'm loosely thinking a single loop still, but having an additional 120/140.1 rad at the front between the CPU and GPUs, with the GPU outlet then returning to the existing 140.2 rad up top before returning to the res. EVGAs 780TI Hydro Copper is available for pre order on Scan.. :drool:


After than creating a whole new thread.. does anyone have any thoughts on this or my proposed loop config? The pump is a EK-DCP 2.2 12V DC model.

http://www.ekwb.com/shop/pumps-and-accessories/pumps/ek-dcp-2-2-12v-dc-pump.html

It looks like your thinking pretty heavy about coming to the full water party too! Personally I think that your in a very similar situation to what I was in with a 'compact' but full ATX case and lots of hardware. I could of modified the 550D to fit a big rad in the front and maybe used it but at the end of the day when your talking about watercooling cases are really cheap. I had to move up in size just a bit but hopefully that means I have a nice amount of radiator space for the hardware and I can run the fans real slow. And really if your going to be investing in watercooling kit again then you need to be sure your going to take full performance and aesthetic advantage of it.

Nobody on here likes single 120/140 radiators, they are expensive for the little cooling they add and are difficult to implement cleanly. So I don't think you will get much support for your current proposition and I agree because i'm not sure two single 140's and a dual 140 would be enough to dissipate 600 watts of heat at a realistic delta T or fan speed. If your saying that your don't mind a little fan noise then stick with air cooling, you can still make it look good, you already have. But if your going to go water cooled GPU's I would add some dirty big radiators and a meaty pump which would probably require packaging it in a bigger case.

Are you getting a monitor upgrade to warrant these 780Ti's or is it just some nice overkill? Just wondering, i'm thinking about a 34UM95 or U3415W. Good to catch up with you on OC3D anyway buddy.


Oh yeah and I forgot to say man up and get some blocks you like instead of buying hydro classys, nobody wants to drop that kind of cash on a big sticker.

JR