Computer is noisy with SLI enabled

[HodgeDogs]

I Made a thread regarding this a while ago but got no decent answer. So i make this again.

Is it normal that my computer fans is getting more noisy and louder when running SLI enabled and playing games. When i disable sli and only run 1 card my fans isnt as much noisy as they was before. When im on the internet my computer is complete silence. Only playing with SLi its getting pretty loud.

Is it a problem ??
Can it hurt my computer when its noisy ??

i got MSI SLI gtx 970
i7 4790 k
16 gb ram
1000 w 80+ bronze

Thanks for ur time.

[FluffyPinkDecoyBunny]

Two cards generate more heat. More heat causes the GPUs to run hotter. When the GPUs run hotter, the fans spin faster to push hot air out to keep them cooler.

Generally in a SLI/crossfire build (unless water cooled) the top card will run 5-10 degrees hotter since hot air rises.

GPUs tend to be fitted with small fans. The smaller the fan and the faster it spins, the louder the noise they generate.

It doesn't hurt your computer. Is it a problem? Depends on how you look at it.
1) clearly your system is working as intended, doing what it needs to keep components cool
2) the extra heat is causing your fans to work extra hard to keep things cooler

Less heat is always better when it comes to computers.

[OLDMAN🎅]

cheap fan there is a difference from a $20 fan,

[HodgeDogs]

FluffyPinkDecoyBunny の投稿を引用：

Two cards generate more heat. More heat causes the GPUs to run hotter. When the GPUs run hotter, the fans spin faster to push hot air out to keep them cooler.

Generally in a SLI/crossfire build (unless water cooled) the top card will run 5-10 degrees hotter since hot air rises.

GPUs tend to be fitted with small fans. The smaller the fan and the faster it spins, the louder the noise they generate.

It doesn't hurt your computer. Is it a problem? Depends on how you look at it.
1) clearly your system is working as intended, doing what it needs to keep components cool
2) the extra heat is causing your fans to work extra hard to keep things cooler

Less heat is always better when it comes to computers.

great post thanks. My performance is over the top with sli enabled so with demanding games i have them on and with medium range games i disable them

[chiefputsilao✖️ping]

you need to have >12cm exhaust fans, if your pc chassis supports it?

[HodgeDogs]

chiefputsipoop の投稿を引用：

you need to have >12cm exhaust fans, if your pc chassis supports it?

it do i have a high end PC and chassi that support good stuff for months

[Bad 💀 Motha]

Add more Case Fans for better overall cooling so the GPUs dont heat up as much.

[HodgeDogs]

Bad-Motha の投稿を引用：

Add more Case Fans for better overall cooling so the GPUs dont heat up as much.

i have good cooling system corsair h8oi and many fans. But i have to change the fans meaby...

[FluffyPinkDecoyBunny]

HodgeDogs の投稿を引用：

Bad-Motha の投稿を引用：

Add more Case Fans for better overall cooling so the GPUs dont heat up as much.

i have good cooling system corsair h8oi and many fans. But i have to change the fans meaby...

Some games are just going to work your GPUs harder than others. They will work harder and fans will spin louder.

Only ways to remove the added noise is to find good, 3rd party, aftermarket heatsink/fan for the 970s (if you're not already using non-reference GPUs) or move to liquid cooling.

If you're motherboard doesn't have space between the two cards, the top is going to run hotter for sure. My old MB for my Phenom II, supported 3way SLI. I never ran 3 cards, just two. The PCI-E lanes were designed to run as 16x/16x/1x or 16x/8x/8x. When I had dual slot GPUs installed in the first two PCI-E slots, they hugged. The top GPU would always run about 10 degrees hotter.

I eventually moved the second card to the third slot, this provided space between the cards and the top card ran only about 5 degrees hotter - the fan on it didn't have to work as hard and it helped with some of the noise. In the end, there were two reference model cards that had small fans that made lots of noise.

[HodgeDogs]

FluffyPinkDecoyBunny の投稿を引用：

HodgeDogs の投稿を引用：

i have good cooling system corsair h8oi and many fans. But i have to change the fans meaby...

Some games are just going to work your GPUs harder than others. They will work harder and fans will spin louder.

Only ways to remove the added noise is to find good, 3rd party, aftermarket heatsink/fan for the 970s (if you're not already using non-reference GPUs) or move to liquid cooling.

If you're motherboard doesn't have space between the two cards, the top is going to run hotter for sure. My old MB for my Phenom II, supported 3way SLI. I never ran 3 cards, just two. The PCI-E lanes were designed to run as 16x/16x/1x or 16x/8x/8x. When I had dual slot GPUs installed in the first two PCI-E slots, they hugged. The top GPU would always run about 10 degrees hotter.

I eventually moved the second card to the third slot, this provided space between the cards and the top card ran only about 5 degrees hotter - the fan on it didn't have to work as hard and it helped with some of the noise. In the end, there were two reference model cards that had small fans that made lots of noise.

Good post thanks. I have my two cards near eachother. I can have 4 cards in my motherboard.