1080 SLI temperature issues.

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Can Boluk

Honorable
Jul 15, 2013
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0
10,530
kmqgmt.jpg


As you can see there's no space at all between the GPUs which leads to the top card going above 90 C when I'm playing Witcher 3 / running Furmark.

( All fans on max speed )

I have a 100$±20$ budget right now which I'm willing to spend on the cooling of the GPUs, potentially a cheap watercooler.

( Shifting the bottom GPU to one slot below causes both gpus to run at x8, bends the sata cable and blocks the way to reset/power buttons and bios switch )

I'd appriciate any recommendations.

Here's my specs;

- CPU: INTEL i7-6850K 3.6 @ 4400 MHz 1.38V
- MOTHERBOARD: MSI X99A GAMING PRO CARBON
- RAM: CORSAIR 32 GB (4X 8GB) DDR4 2400 MHz
- SSD: SAMSUNG 950 Pro 256GB M.2 SATA 2200/900 Mb/s
- HDD1: WESTERN DIGITAL 2 TB SATA III 64MB 6 Gb/s Caviar Red
- HDD2: SEAGATE BARRACUDA XT 2 TB
- GPU: GIGABYTE GTX 1080 G1 Gaming 8GB (SLI)
- CASE: CORSAIR Carbide Air 540 White
- PSU: CORSAIR RM1000X 1000w 80 Plus GOLD
- CPU COOLER: CORSAIR H115i Extreme Performance
 
Solution
geofelt
First of all, is 90c. under extreme load a problem that you really need to solve?

The easiest would be to use the lower slot.
X8 does not have any real impact on performance.
There are right hand sata cables to fix the bending issue.
Once in the case, You probably do not need the onboard switches.

I have perhaps a radical suggestion:
Remove the H115 and radiator.
Replace it with a simple tower type air cooler like the cryorig H7.
That way, all of the front intake air can go to cooling the graphics cards and there will be sufficient to cool your cpu.
The problem now is the exhaust from the radiator is hotter because of the extracted cpu heat.
That makes cooling the graphics cards more difficult.
If needed, increase the rpm of the front...
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geofelt

geofelt

Titan
Oct 9, 2006
54,380
4,185
174,240
First of all, is 90c. under extreme load a problem that you really need to solve?

The easiest would be to use the lower slot.
X8 does not have any real impact on performance.
There are right hand sata cables to fix the bending issue.
Once in the case, You probably do not need the onboard switches.

I have perhaps a radical suggestion:
Remove the H115 and radiator.
Replace it with a simple tower type air cooler like the cryorig H7.
That way, all of the front intake air can go to cooling the graphics cards and there will be sufficient to cool your cpu.
The problem now is the exhaust from the radiator is hotter because of the extracted cpu heat.
That makes cooling the graphics cards more difficult.
If needed, increase the rpm of the front intakes for more airflow.

Perhaps do both.
 
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