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Huge drop in EVGA 1080 Ti SC2 temps with added case fans and change in location

Amin S
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Some of you may think that this is really obvious, and I admit I am far from an expert here, but I'm gonna share it anyway in case it helps someone looking to lower the temps on their EVGA 1080 Ti SC2.

 

These are the specs on my PC:
Case: Fractal Define R6
CPU: i7-8700K @ 5GHz all cores
CPU cooler: Corsair H115i Pro
Power supply: Corsair HX850i
OS: Windows 10 Pro 64-bit
Boot and app drive: Samsung 970 Evo 1TB NVMe M.2 SSD

Scratch: Samsung 970 Evo 500GB NVMe M.2 SSD
Storage drives: 3 x Seagate 4TB BarraCuda
RAM: G.Skill Ripjaws V 32GB (2 x 16GB) DDR4-3200
Motherboard: ASUS ROG STRIX Z370-E
GPU: EVGA GeForce GTX 1080 Ti SC2 @ +55 GPU +200 MEM

Display: ASUS ROG Swift PG279Q (1440p G-Sync IPS) @ 144Hz

 

I had been using the H115i fans as intake with a single rear exhaust.  Pic:

 

DSC03549.thumb.jpg.18c9e4e0f5c24fbf790849d07b7cba58.jpg

 

 

In most games, I was seeing decent enough GPU temps, no higher than mid 60s, but in some games I was getting much higher.  For example, Final Fantasy XV on max settings kept the GPU temp consistently near 80 deg with fans at 50%.  I prefer to keep the GPU fans no higher than 50% because they are pretty loud at 60% or higher.

 

I went to my local Microcenter and asked some of the sales folks there what I could do to get better GPU temps.  I explained my current case and fan setup and asked if adding or moving case fans might help.  They said it wouldn't make much difference at all and suggested I try replacing the thermal paste in the GPU.  If that didn't work, they said I could install the EVGA GTX 1080 Ti SC Hybrid Kit.

 

I decided to try adding some fans back in anyway since it is easier to do than either of the solutions they mentioned,  I moved the H115i fans to the top as an exhaust and added two 140mm intake fans in the front:

 

IMG-1171.thumb.jpg.b5139ca25394124166a4104b7d769e85.jpg

 

 

Result: Massive drop in GPU temp.  With the same modest overclock and GPU fan curve, I'm seeing mid 60s instead of high 70s in FFXV.  Around a 13-14 deg drop in temp.  I'm not sure if my CPU temps have changed a little, but they remain good, regardless.  And my PC is overall just as quiet as before.  The added 140mm fans aren't loud at all.

 

To me the moral of the story (and again I realize this is obvious to some of you) is not to assume anything - test some different fan configurations.  What works for one system may not work for another!

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Yeah all the heat of the cpu was blown right into the gpu and that caused the higher temperature.

Now the heat of the cpu is going straight out of the case.

I only see your reply if you @ me.

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1 hour ago, Amin S said:

Some of you may think that this is really obvious, and I admit I am far from an expert here, but I'm gonna share it anyway in case it helps someone looking to lower the temps on their EVGA 1080 Ti SC2.

 

These are the specs on my PC:
Case: Fractal Define R6
CPU: i7-8700K @ 5GHz all cores
CPU cooler: Corsair H115i Pro
Power supply: Corsair HX850i
OS: Windows 10 Pro 64-bit
Boot and app drive: Samsung 970 Evo 1TB NVMe M.2 SSD

Scratch: Samsung 970 Evo 500GB NVMe M.2 SSD
Storage drives: 3 x Seagate 4TB BarraCuda
RAM: G.Skill Ripjaws V 32GB (2 x 16GB) DDR4-3200
Motherboard: ASUS ROG STRIX Z370-E
GPU: EVGA GeForce GTX 1080 Ti SC2 @ +55 GPU +200 MEM

Display: ASUS ROG Swift PG279Q (1440p G-Sync IPS) @ 144Hz

 

I had been using the H115i fans as intake with a single rear exhaust.  Pic:

 

DSC03549.thumb.jpg.18c9e4e0f5c24fbf790849d07b7cba58.jpg

 

 

In most games, I was seeing decent enough GPU temps, no higher than mid 60s, but in some games I was getting much higher.  For example, Final Fantasy XV on max settings kept the GPU temp consistently near 80 deg with fans at 50%.  I prefer to keep the GPU fans no higher than 50% because they are pretty loud at 60% or higher.

 

I went to my local Microcenter and asked some of the sales folks there what I could do to get better GPU temps.  I explained my current case and fan setup and asked if adding or moving case fans might help.  They said it wouldn't make much difference at all and suggested I try replacing the thermal paste in the GPU.  If that didn't work, they said I could install the EVGA GTX 1080 Ti SC Hybrid Kit.

 

I decided to try adding some fans back in anyway since it is easier to do than either of the solutions they mentioned,  I moved the H115i fans to the top as an exhaust and added two 140mm intake fans in the front:

 

IMG-1171.thumb.jpg.b5139ca25394124166a4104b7d769e85.jpg

 

 

Result: Massive drop in GPU temp.  With the same modest overclock and GPU fan curve, I'm seeing mid 60s instead of high 70s in FFXV.  Around a 13-14 deg drop in temp.  I'm not sure if my CPU temps have changed a little, but they remain good, regardless.  And my PC is overall just as quiet as before.  The added 140mm fans aren't loud at all.

 

To me the moral of the story (and again I realize this is obvious to some of you) is not to assume anything - test some different fan configurations.  What works for one system may not work for another!

 

I love seeing this post because I have argued multiple times on this forums about people front mounting radiators as intake - no other option that will WORK - but by no means is it EVER optimal lol.

 

As much cold air in as possible (DBa levels) while exhausting the hot air out as fast as possible - thermals baby!

Workstation Laptop: Dell Precision 7540, Xeon E-2276M, 32gb DDR4, Quadro T2000 GPU, 4k display

Ryzen Rig 3: ASRock B450m Pro4, Ryzen 5 3600, ARESGAME River 5 CPU cooler in push/pull, EVGA RTX 2060 KO, 16gb (2x8) 3600mhz TeamGroup T-Force RAM, ARESGAME AGV750w PSU, 1tb WD Black SN750 NVMe Win 10 boot drive, 3tb Hitachi 7200 RPM HDD, Fractal Design Focus G Mini custom painted.  Lenovo 27" 1080p 60hz placeholder monitor, generic mouse, generic keyboard.  Still a work in progress

NVIDIA GeForce RTX 2060 video card benchmark result - AMD Ryzen 5 3600,ASRock B450M Pro4 (3dmark.com)

Ryzen Rig 2: ASrock B450 Pro4, Ryzen 7 1700 @ 4.2ghz all core 1.4vCore, AMD R9 Fury X w/ Swiftech KOMODO waterblock, Custom Loop 2x240mm + 1x120mm radiators in push/pull 16gb (2x8) 3600mhz V-Color Skywalker (or 4x8gb DDR4 2666mhz for large tasks), Corsair HX850 PSU, 250gb Samsun 960 EVO NVMe Win 10 boot drive, 500gb Samsung 840 EVO SSD, 512GB TeamGroup MP30 M.2 SATA III SSD, SuperTalent 512gb SATA III SSD, CoolerMaster HAF XM Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Viotek GN24C 24" 1080p 144hz curved and Hannspree HF207 as 2nd monitor

https://www.3dmark.com/3dm/37004594?

Ryzen Rig 1: ASUS B350-PRIME ATX, Ryzen 7 1700, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (2x8) 3200mhz V-Color Skywalker, ANTEC Earthwatts 750w PSU, MasterLiquid Lite 120 AIO cooler in Push/Pull config as rear exhaust, 250gb Samsung 850 Evo SSD, Patriot Burst 240gb SSD, Cougar MX330-X Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Acer XF270HU 2560x1440 144hz IPS monitor

https://www.3dmark.com/3dm/37628874?

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