warface666 Posted October 16, 2013 Share Posted October 16, 2013 I was actually just going to post a question on how I should set up my airflow when I saw this thread. I am currently running the following: 750D Case Asus Maximus VI Formula 4770K w/ H100i x2 EVGA 780 SC ACX cooled gpus I am running the 3 built in fans in their installed directions (2 front intake, 1 rear exhaust). The H100i is in a pull configuration like the instructions suggest. My PSU is mounted with the fan on the bottom to intake cool air. What I am finding is that my 780's are running a bit hotter than they used to in my HAF 932 case. In most cases the top card is hitting the 79-80c threshold. There are no issues in my games but I'm just not that comfortable with them running that hot when they used to only get to 69c +/- under load in the HAF case. I love the aesthetics and space inside the case much more so I don't really want to switch back. Note: I am running the default fan curves in EVGA Precision X Any of you experts have any recommendations for me? Link to comment Share on other sites More sharing options...
Corsair Employees Corsair Dustin Posted October 16, 2013 Corsair Employees Share Posted October 16, 2013 I was actually just going to post a question on how I should set up my airflow when I saw this thread. I am currently running the following: 750D Case Asus Maximus VI Formula 4770K w/ H100i x2 EVGA 780 SC ACX cooled gpus I am running the 3 built in fans in their installed directions (2 front intake, 1 rear exhaust). The H100i is in a pull configuration like the instructions suggest. My PSU is mounted with the fan on the bottom to intake cool air. What I am finding is that my 780's are running a bit hotter than they used to in my HAF 932 case. In most cases the top card is hitting the 79-80c threshold. There are no issues in my games but I'm just not that comfortable with them running that hot when they used to only get to 69c +/- under load in the HAF case. I love the aesthetics and space inside the case much more so I don't really want to switch back. Note: I am running the default fan curves in EVGA Precision X Any of you experts have any recommendations for me? The cards will hit lower temperatures in the HAF 932 because there's that massive side fan blowing directly on to them; that case is basically cooling through brute force. 79-80C on your top card is *actually* pretty reasonable. Reference 780s will push into the mid-to-high 80s; these chips are designed to run at fairly high thermals, so I really wouldn't worry about those temperatures. One thing to consider trying is orienting the fans on the H100i to exhaust hot air outside of the case instead of pulling it inward. While this may result in slightly higher CPU temperatures, it could also help to remove some of that recirculating hot air inside the case. Remember that the ACX cooler is open air and not a blower, making it less ideal for multi-GPU configurations. You essentially have 500W of GPU heat that you have to somehow remove from the case, and that's before you even introduce the stock 84W from the i7-4770K. Honestly, the H100i instructions tell you to pull in cool air from the outside because that's best for the CPU, but most of us will run our CLCs as exhausts and take the hit to CPU temperatures in exchange for lower internal temperatures overall. ;) Link to comment Share on other sites More sharing options...
warface666 Posted October 16, 2013 Author Share Posted October 16, 2013 The cards will hit lower temperatures in the HAF 932 because there's that massive side fan blowing directly on to them; that case is basically cooling through brute force. 79-80C on your top card is *actually* pretty reasonable. Reference 780s will push into the mid-to-high 80s; these chips are designed to run at fairly high thermals, so I really wouldn't worry about those temperatures. One thing to consider trying is orienting the fans on the H100i to exhaust hot air outside of the case instead of pulling it inward. While this may result in slightly higher CPU temperatures, it could also help to remove some of that recirculating hot air inside the case. Remember that the ACX cooler is open air and not a blower, making it less ideal for multi-GPU configurations. You essentially have 500W of GPU heat that you have to somehow remove from the case, and that's before you even introduce the stock 84W from the i7-4770K. Honestly, the H100i instructions tell you to pull in cool air from the outside because that's best for the CPU, but most of us will run our CLCs as exhausts and take the hit to CPU temperatures in exchange for lower internal temperatures overall. ;) I'm with you, I was kind of thinking the same thing. I will reorient the H100 fans to exhaust and see if that gets me a better balance on temps. Thanks for the tips! Link to comment Share on other sites More sharing options...
Corsair Employees Corsair Dustin Posted October 16, 2013 Corsair Employees Share Posted October 16, 2013 Happy to help! Let us know how it works out for you. :) Link to comment Share on other sites More sharing options...
warface666 Posted October 21, 2013 Author Share Posted October 21, 2013 Happy to help! Let us know how it works out for you. :) Made the change with no improvement. The air is just pooling around the cards and keeping them at that temp. I think my next step will be to create a custom fan curve to bump the fans up a little higher at certain temps. Would adding a fan at one of the bottom mounts in some fashion help? I have a few SP120 fans left over. Link to comment Share on other sites More sharing options...
Corsair Employees Corsair Dustin Posted October 21, 2013 Corsair Employees Share Posted October 21, 2013 Made the change with no improvement. The air is just pooling around the cards and keeping them at that temp. I think my next step will be to create a custom fan curve to bump the fans up a little higher at certain temps. Would adding a fan at one of the bottom mounts in some fashion help? I have a few SP120 fans left over. It's worth a shot. I'm not sure how much it would help, but it's worth trying. Link to comment Share on other sites More sharing options...
warface666 Posted October 21, 2013 Author Share Posted October 21, 2013 It's worth a shot. I'm not sure how much it would help, but it's worth trying. I have one other question for you... Have you seen issues coming across on the 750D, the built in mobo standoffs and Asus Maximus VI Formula boards with their under armor? I had to remove the armor to fit in the case but some others I have seen were able to use the armor. Am I missing something? Thanks for all your help! Link to comment Share on other sites More sharing options...
Corsair Employees Corsair Dustin Posted October 21, 2013 Corsair Employees Share Posted October 21, 2013 Just eyeballing it, I could see the Maximus VI Formula's under armor causing clearance issues. They essentially designed their armor to work strictly with posts and neglected to put much clearance around the mounting holes. I'm not sure how anyone else would've been able to keep the armor unless they used a dremel to carve a bit more clearance out of it. Link to comment Share on other sites More sharing options...
warface666 Posted October 21, 2013 Author Share Posted October 21, 2013 Just eyeballing it, I could see the Maximus VI Formula's under armor causing clearance issues. They essentially designed their armor to work strictly with posts and neglected to put much clearance around the mounting holes. I'm not sure how anyone else would've been able to keep the armor unless they used a dremel to carve a bit more clearance out of it. Ok good, I wasn't going crazy when I was trying to install it. There were just 2 of the standoffs that didn't work and needed some shaving to be done. ...back to figuring out how to get it a little cooler in there. Link to comment Share on other sites More sharing options...
gabsonuro Posted October 22, 2013 Share Posted October 22, 2013 Keep in mind that you have two cards that exhaust air into the case. The 750d is known to not cool these cards very well, since there is no side intake/outtake. The haf932 is much more suited for these types of cards. Link to comment Share on other sites More sharing options...
warface666 Posted October 22, 2013 Author Share Posted October 22, 2013 Keep in mind that you have two cards that exhaust air into the case. The 750d is known to not cool these cards very well, since there is no side intake/outtake. The haf932 is much more suited for these types of cards. Yup, I posted this in another thread. As much as I wanted it to work out, I had to accept defeat and buy a HAF X for some brute force cooling. Thank you Dustin for all your insight! Link to comment Share on other sites More sharing options...
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