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970 Sli Woes

nmxdaven
By nmxdaven
in Graphics Cards
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Posted

Hey guys,

 

So heres my issue. I just plugged in my second 970. Both are EVGA SC's, one with the 2.0 cooler, the other with the 1.0 cooler.

 

The temp on my top card is quite a bit higher. I know that its expected, but just making sure its NORMALY this high.

 

Running vally bench, I can easily get the top card in the mid 80's with the bottom at mid 60's.The top card fan will start SCREAMING while the bottom is just chugging along.

 

My cards are right on top of one another, as Im on a matx board, but airflow is still good. Even replaced one of my front fans with the new noctua industrial 3k rpm fan and really it didnt make a huge difference.

 

Normal?

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What is the fan speed at?

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Posted

Hey guys,

 

So heres my issue. I just plugged in my second 970. Both are EVGA SC's, one with the 2.0 cooler, the other with the 1.0 cooler.

 

The temp on my top card is quite a bit higher. I know that its expected, but just making sure its NORMALY this high.

 

Running vally bench, I can easily get the top card in the mid 80's with the bottom at mid 60's.The top card fan will start SCREAMING while the bottom is just chugging along.

 

My cards are right on top of one another, as Im on a matx board, but airflow is still good. Even replaced one of my front fans with the new noctua industrial 3k rpm fan and really it didnt make a huge difference.

 

Normal?

 

 

Any pics of the setup?

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Here it is attempting a little bit of an overclock. Seems to never get over 85, but boy is that fan loud.

 

 

post-164031-0-56495300-1416878042_thumb.

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Cant get a shot that doesnt look totally weird because of the side window and reflections, but yea there right on top of one another.

 

Any pics of the setup?

 

post-164031-0-90719500-1416878189_thumb.

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Having a space between the cards makes a great difference. If only they have more Titan style 970's. My noctua 3k fans help a lot, barley get out of the 50's on my top card.

Main RIg Corsair Air 540, I7 9900k, ASUS ROG Maximus XI Hero, G.Skill Ripjaws 3600 32GB, 3090FE, EVGA 1000G5, Acer Nitro XZ3 2560 x 1440@240hz 

 

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What mobo are you running? like mick suggested , you may want to move it down a slot (if possible)

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Airflow isn't good when open air cards are sandwiched like that. You really want 20-30mm of open space.

 

This is one of the cases where blower style coolers are superior. Given that they're EVGA card, you could contact them and find out if they'll sell you some of their 970 blower coolers. Based on past unnamed Nvidia cards (Classified, FTW, etc.) they'll be the same cards.

 

 

Cant get a shot that doesnt look totally weird because of the side window and reflections, but yea there right on top of one another.

You could always take the side panel off....

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Mind me asking what case  you are using?

 

350 D corsair. Running a gygabyte matx gaming 5. No way to use the bottom PCI because of the usb, system, and front audio headers.

 

Running a 140 corsair and 120mm 3000 noctua in the front, 2 140 corsairs in the top for the rad, and a 120 corsair exhaust in the back.

 

Any ideas? What makes me nervous is that winter is upon us in Texas and its a balmy 50 degrees outside. In the summer this room is 10-15 degrees warmer than it is right now. Im afraid that when summer hits my top card will be 100+.

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350 D corsair. Running a gygabyte matx gaming 5. No way to use the bottom PCI because of the usb, system, and front audio headers.

 

Running a 140 corsair and 120mm 3000 noctua in the front, 2 140 corsairs in the top for the rad, and a 120 corsair exhaust in the back.

 

Any ideas? What makes me nervous is that winter is upon us in Texas and its a balmy 50 degrees outside. In the summer this room is 10-15 degrees warmer than it is right now. Im afraid that when summer hits my top card will be 100+.

I replaced all my fans with noctuas and noticed a great increase in cooling. Even with the open air coolers on my card, I still prefer blower style any day.

 

No chance you could get ahold of the titan style 970?

 

What are the temps like while gaming as benchmarking never matters to gamers.

Main RIg Corsair Air 540, I7 9900k, ASUS ROG Maximus XI Hero, G.Skill Ripjaws 3600 32GB, 3090FE, EVGA 1000G5, Acer Nitro XZ3 2560 x 1440@240hz 

 

Spare RIg Lian Li O11 AIR MINI, I7 4790K, Asus Maximus VI Extreme, G.Skill Ares 2400 32Gb, EVGA 1080ti, 1080sc 1070sc & 1060 SSC, EVGA 850GA, Acer KG251Q 1920x1080@240hz

 

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If you are desperate, you could try to duck-tape a fan to the cards to make a pseudo-blower cooler. But it won't look pretty.

Want to help researchers improve the lives on millions of people with just your computer? Then join World Community Grid distributed computing, and start helping the world to solve it's most difficult problems!

 

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Try flipping the power supply. Yeah, yeah, I realize it's counter-intuitive to mount another exhaust when you are struggling with temperatures, but the PSU in exhaust mode should direct more overall system air over the CPUs, and "shape" the internal air flow. Give it a try, but if it doesn't help, switch it back again.

 

If you are using the Noctua industrial fans in the front, you should have enough intake, I just suspect a lot of it is going straight to the top of the case.

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I would put the one with the better cooler on top as the top card is going to be hotter since the second card is basically sitting on the fan. So yes those temps are normal, but they can be adjusted by switching the cards as i suggested.

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  • 1 month later...
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Thanks for the help guys. Thought I would update this as I tried different things.

 

Essentially this gave me the best temperatures. A flexible fan pointed strait between the cards. Now the cards are just 9-10c apart, and I can even do a little overclocking while keeping in boost. I just need to snap those dumb led's off and I'm in business.

 

nGjxAF8.jpg

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Thanks for the help guys. Thought I would update this as I tried different things.

 

Essentially this gave me the best temperatures. A flexible fan pointed strait between the cards. Now the cards are just 9-10c apart, and I can even do a little overclocking while keeping in boost. I just need to snap those dumb led's off and I'm in business.

 

Yay, my idea won! Today, beer is on me! :rolleyes:

Want to help researchers improve the lives on millions of people with just your computer? Then join World Community Grid distributed computing, and start helping the world to solve it's most difficult problems!

 

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Like mentioned above, swap the cards position and modify the fan flow using MSI A/B or EVGA PrecX 16.  Run the same tests and see how your temps fare. 

I have a potato!

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I tried swapping the cards. Didn't matter. Whatever top card would always get well into the 80's and start throttling, even with fans forced at full. Just too small of a space between them.

 

One card does sag more than the other however. When that card is on top, there’s almost NO room between. Same card, same manufacture.

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