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Title: Higher Temp or more RPM's On the Fan? Which one is better? Post by: endriuska on May 07, 2013, 02:54:17 AM Hey,
I have 3x7950 (http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7542562&CatId=7387) and been running at 74-80C each and 80% of fan. Which is better for the card? should i crank up the fan to 90%, 100%? to keep the cards cooler? or should i let the temp go to 80C-85C and keep the fan at 60%, 70%? What would be your recommendations for the card temperature and the RPMs? On the hot day(rig is in garage) it's 80C for all cards at 80% fan, should i crank up the fan? or it's ok to be at 80C? I'm kind of looking answer to my specific case, but in the same way would be good to know which makes more sense in general. Thanks Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: plectrum on May 07, 2013, 03:39:38 AM I say that if the noise is not a problem then crank up the fans to keep them cool. Why not? You only hear of card dying because they get too hot.
Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: turtle83 on May 07, 2013, 03:16:44 PM I say that if the noise is not a problem then crank up the fans to keep them cool. Why not? You only hear of card dying because they get too hot. running fan at higher rpm will lower life of fan.... but im quite certain fan is a LOT cheaper to replace than GPU. Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: crazyates on May 07, 2013, 03:36:50 PM You're worried about a $5 fan vs a $300 GPU? Crank that fan up there, and if it does fail in a couple years, it's cheap (and wicked easy) to replace. A GPU that fails after 3 years is a lil more expensive.
Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: bitcoiner49er on May 07, 2013, 04:11:39 PM Do you NEED to run at 100%? What temp are you OK with?
Check the various temps vs fan speeds. ie 80C @ 70%; 75C @ 90%; 73C @ 100% You may see that a 10% increase in fan speed only gets you 1 or 2 C cooler. Is that worth it? Personally I run at 65% (blower/reference fans) and I do my best to adjust my cards to run at <75C. Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: Ryu.Hayabusa on May 07, 2013, 04:15:19 PM 80c isn't terrible, but if say 80-90% gets you into the 70s on temp, then go for it.
Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: KS on May 08, 2013, 03:09:20 PM why not add extra "PCI slot" fans? Or whatever:
http://www.amazon.com/gp/product/B000I5KSNQ/ref=pd_lpo_k2_dp_sr_2?pf_rd_p=1535523702&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B0007MGEO2&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=1STZH1DJZW59K0C082R9 Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: chungenhung on May 08, 2013, 05:09:34 PM Hey, put a fan that blows directly at the rigI have 3x7950 (http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7542562&CatId=7387) and been running at 74-80C each and 80% of fan. Which is better for the card? should i crank up the fan to 90%, 100%? to keep the cards cooler? or should i let the temp go to 80C-85C and keep the fan at 60%, 70%? What would be your recommendations for the card temperature and the RPMs? On the hot day(rig is in garage) it's 80C for all cards at 80% fan, should i crank up the fan? or it's ok to be at 80C? I'm kind of looking answer to my specific case, but in the same way would be good to know which makes more sense in general. Thanks Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: crazyates on May 08, 2013, 07:02:22 PM Wait, are your 3 GPUs crammed next to each other in a MB? Grab a milk crate, some PCIe risers, and a few dozen zip ties, and space those cards out! They NEED their airflow flowing into the fans.
Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: ryantc on May 08, 2013, 07:27:59 PM Wait, are your 3 GPUs crammed next to each other in a MB? Grab a milk crate, some PCIe risers, and a few dozen zip ties, and space those cards out! They NEED their airflow flowing into the fans. looks like they are in a closed case. two fans card won't get that hot, my 7970s run even cooler (67C 77C) with 50% fan speed. Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: endriuska on May 08, 2013, 10:20:15 PM This is my setup:
http://gyazo.com/71de838ccc44410e1b111684c18e3386.png they are kind of separated, but not very well i guess, and the fan is very close to the rig bdw can i use 1x to 16x extensions for 16x pci port? lets say board has 16x pci and can i use the 1xto16x extension to extend it? or does it have to be 16x to 16x? thanks Title: Re: Higher Temp or more RPM's On the Fan? Which one is better? Post by: GenTarkin on May 08, 2013, 10:35:19 PM the extension can be any combination =)
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