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Mild OC in total silence - i5 4690k & 980 Ti

post #1 of 21
Thread Starter 
Hey

As the title says, i want to have a very silent build with a ~20% oc.
I own the great Corsair Air 540, a great Prolimatech Genesis on the cpu with Noiseblockers Pro Pk 3 at ~800 rpm and recently, a 980 Ti Evga reference.
As a point of reference about noise, i modded the Corsair HG10 A1 to run without the original blower fan of my ex 290x, because even at idle, the blower was too loud. I also changed an OCZ 1350w psu with a Corsair AX1200i only because this one is dead silent.
Even if the 980 ti is much quieter than the 290x`s idle blower, it gets too hot for my taste and also, in full load, it`s loud.
I was thinking about Prolimatech Mk 26, because anyway, my Asus Z97 k Mb does not support SLI and if in the future i`ll need more gpu power for the VR, most likely i`ll change the gpu and i`ll put the mk 26 on the new one, rather than adding another 980 ti in sli.
I`m not a fan of "future proofing" anyway. I think it`s just a stupid excuse for "inv...WASTING" money for bragging rights in the geek world.

Back to the problem: could you recommend a better idea?
I also have a Corsair h110 lying around with no use. I was considering the Corsair HG10 N980 (when it will be available) but it seems much more complicated and my previous experience with 290x, hg10, H60 wasn`t a revelation. It most likely was something to make my life more complicated smile.gif . After all that, the wind noise going through the dense radiator is louder than the one going through the prolimatech.

About the fans: on my previous build i had a Scythe Mugen, and an Accelero S1 with 4 Gentle Typhoons at 800 rpm. THAT was silence. GTs were mega silent under 1k rpm.
When i got the NB PK 3 after long research on the interwebs, i was dissapointed. I was even more dissapointed when i`ve got my first noctuas, with the h110, to the point that i simply cannot understand why people praise them so much.

Any recs on very quiet fans at ~500- 700 rpm? I ve read good things about the NB eLoop

PS: custom loop is out of the question. Way to expensive, unnecessary, maintenance, changing gpu blocks when you upgrade, etc.
Ty in advance for all the answers
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post #2 of 21
The only "future proofing" that makes sense are, cases, coolers and fans that we can use in future builds. thumb.gif

Honestly, you are going to have a very hard time finding better 120mm fans than the GTs. To me the ideal would be a 400 - 1850rpm or 2150rpm PWM.

My favorite 140omm fans are Thermalright TY-14x series fans. Problem is they are not square and have 120mm fan mount spacing. I work around those problems by squaring them and using 105mm (120mm fan) to 124.5mm (140mm fan) adapter plates (made myself)
http://www.overclock.net/t/1491876/ways-to-better-cooling-airflow-cooler-fan-data/20_20#post_23389814

http://www.overclock.net/t/1491876/ways-to-better-cooling-airflow-cooler-fan-data/20_20#post_23207921
post #3 of 21
The Darkside PWM GT is 500-1850rpm.


If it doesn't click below 800rpm or emit the strange overtones older GTs have in the 900-1100 range, could be the 120mm silent grail.

The only effective future proofing is to never go there. Or, like I did, move to some backwaters where the future can't find you. It's the haunting past that is more troubling...
post #4 of 21
Thread Starter 
I`m not trying to find better fans than the GT`s, i`m trying to find ones that are as good, since GTs are very hard to find.
I`ve reached this far with the conclusions: contrary to my logic about 140 mm that should be quieter than 120mm because larger fins require lower rpms to produce the same cooling, it seems that in real world, that is not the case. Don`t know why yet. Acoustics, more wind, larger rotors needed (nah, that`s not viable, because GT s had immense rotors)
So, i guess that the way to go would be replacing all my fans with 120 mm pwm ones and i`ll try to do a custon fan curve in bios so that the whole sistem should stay completely passive in idle. The fans should not start untill 50c, like my AX1200i does, and like the new video cards with custom cooling do. Both the Genesis and the MK 26 should be able to cool enough passively without load. This is necessary because my pc runs 24/7. I watch movies before i fall asleep and it runs on an on. No moving parts in idle means dead silence and no dust.
After 50c, (browsing and desktop apps) the fans should power on and rotate at ~300 rpm - still dead silent.
While gaming, 2 x 120 mm at 600 rpm should be enough to keep cpu under 50 and gpu under 70. That`s a fine swoosh that i can live with.

This setup would be much quieter than any liquid cooling, custom or not.

I just need to find these fans i`m talking about. No need for static pressure, no need for insane cfm, just absolute silence and very low starting voltages.
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post #5 of 21
I use 140mm PWM fans almost exclusively now. I have found they more more air at lower rpm and at same noise level as 120mm fans. 2x 140mm fans move about the same mount of air as 3x 120mm fans of same design. A single 140 vs 120 may be slightly louder moving 1.5 times as much air, but the noise level of 3x fans each producing same noise level are 3.5 dBA louder than 2 fans. (each additional fan adds 3.5db to noise level) 3x fans at 30dB each are 39.5dB. 2x fans at 33dD are 39dB .. 3x fans at 20dB each are 29.5dB while 2x fans at 23dB each are 29dB
post #6 of 21
Thread Starter 
I don`t know if that is, theoretically the case, but my own experience taught me that the 120mm GT s at 800 rpm were silent and any 140 mm i tried, at 700 rpm is loud. In fact, it seems that we do not NEED that much airflow to efficiently cool big heatsinks. (logical deduction from the small cooling improvement of the 280mm AIO vs the 240 ones.
Also, 140mm`s won`t start under 700 rpm. I want ones that start at 300, so my 3 positions would be 0-300-600.
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post #7 of 21
you could have gone with a rosewell silent night PSU which is entirely passive.



yes it's only 500w, but you aren't drawing much more then 400 from your system even in benchmark load in the 1st place. you are running a mild OC and 500w is more then plenty of juice from a superflower golden silent PSU smile.gif having such a large PSU in a system that draws so little power actually puts it in a very poor efficiency part of the curve. having a smaller PSU which put the power curve in the more optimal range would produce less heat and well... the psu is silent in the 1st place smile.gif

I'm not sure how you went about modding the HG10 since the heatsink you have on there doesn't seem to have full coverage of the VRM's. something to consider is the VRM cooler from thermalright



and maybe mod that into the HG10

unfortunately there aren't any "silent" solutions for GPU cooling atm so the HG10 is likely your best "quiet" alternative. however that does put the pump of your H110 at the top of the noise generator list.

another thing to consider is the speed you run your fans at.. at 300RPM, the fan is generating such low static pressure it's unlikely to pull much air pass the air filters. you don't want to remove the air filter since it's part of the long term health of your system so you want to run the fans at maybe 500RPM. it's still relatively silent but it's actually pulling air through and keeping things cool. besides, fan running at 500RPM is still going to be ALOT quieter then your H110's pump.
post #8 of 21
Thread Starter 
My ax1200i hasn`t turned on its fan ever. It stays passive untill 50% load. That`s 100 more than your sugestion, and after that, my psu can do another trick: double its power if I ever need a sli. Also, this one is platinum certified, not gold. About the "very poor" efficiency in low power curve, it`s like it isn`t 92%, but 88% min. Don`t care.).
Moving on: i know about TR vrm coolers and i`m taking one into account, but for using with the MK 26, not the HG10. If you would have paid attention you would have seen that I own the a1 model and now I have a 980 Ti to cool. Not going to liquid cool it because all the drawbacks without any real advantage. However, I doubt that the transfer vrm Cooler would fit, because the reference 980 ti has another two vrms on a separate line, in the middle of the first one.
About the hg10 mod, you can clearly see it in the attached picture. Instead of the blower I attached a big Intel stock heatsink to draw the heat and dissipate it through natural air convection.

So, the way to go is prolimatech mk 26 with 300 rpm 120mm fans,because it needs 0 static pressure, it just needs some airflow. I just need to find these fans that start at 300 rpm, ideally with pwm because I want to power them with the fan headers of the mb and gpu with a custom curve. Rpm 0 idle, 300 medium load, max 5-600 rpm în full load. I think I will get max 70c with this VERY quiet setup.
I'll just need some more research for the fans and i'll post the results soon
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post #9 of 21
As far as fan noise goes there's absolutely no point in having them stop completely (well, dust intake, I suppose), at least when talking about 120mm fans. I'm fairly anal about noise as well (PSU twice as powerful so the fan never spins, no mechanical drives, SSD only, replaced the stock cooling on GPU...), and I've got Noiseblocker Multiframes running in my system. The M12-PS variant is completely inaudible on 5V, which is roughly 500-600 RPM or so. The noise profile is actually quite tolerable up to about a 1000RPM. They start to produce audible vibrations over that, but in my experience so does pretty much every other fan I ever had. I suppose if you want to I could try to connect them to a motherboard header and see how low they can actually go and whether they can stop completely when I get off work tonight.

Oh and at 5V it keeps my 4790k between 50 and 60C while gaming, 30-35 under light load (watching movies, browsing). D14 for a heatsink, 20-22C ambient temps.
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post #10 of 21
Quote:
Originally Posted by 0cChase View Post

My ax1200i hasn`t turned on its fan ever. It stays passive untill 50% load. That`s 100 more than your sugestion, and after that, my psu can do another trick: double its power if I ever need a sli. Also, this one is platinum certified, not gold. About the "very poor" efficiency in low power curve, it`s like it isn`t 92%, but 88% min. Don`t care.).
Moving on: i know about TR vrm coolers and i`m taking one into account, but for using with the MK 26, not the HG10. If you would have paid attention you would have seen that I own the a1 model and now I have a 980 Ti to cool. Not going to liquid cool it because all the drawbacks without any real advantage. However, I doubt that the transfer vrm Cooler would fit, because the reference 980 ti has another two vrms on a separate line, in the middle of the first one.
About the hg10 mod, you can clearly see it in the attached picture. Instead of the blower I attached a big Intel stock heatsink to draw the heat and dissipate it through natural air convection.

So, the way to go is prolimatech mk 26 with 300 rpm 120mm fans,because it needs 0 static pressure, it just needs some airflow. I just need to find these fans that start at 300 rpm, ideally with pwm because I want to power them with the fan headers of the mb and gpu with a custom curve. Rpm 0 idle, 300 medium load, max 5-600 rpm în full load. I think I will get max 70c with this VERY quiet setup.
I'll just need some more research for the fans and i'll post the results soon

wow, i guess it's the wrong day to try to help someone biggrin.gif

it's your build... do whatever you feel is right. i'm only giving some advice based on your goal. if you don't like the advice, don't use it biggrin.gif

anyway. as far as PSU... in your OP you said you weren't interested in SLi,
Quote:
my Asus Z97 k Mb does not support SLI and if in the future i`ll need more gpu power for the VR, most likely i`ll change the gpu and i`ll put the mk 26 on the new one, rather than adding another 980 ti in sli.
I`m not a fan of "future proofing" anyway. I think it`s just a stupid excuse for "inv...WASTING" money for bragging rights in the geek world.

I guess i shouldn't have believe your original post biggrin.gif here is a review of the AX1200i

http://www.hardocp.com/article/2012/10/15/corsair_ax1200i_power_supply_review/9

it "passed"... for a flagship product fetching top dollar, i'd expect alittle more then "pass" but whatever smile.gif and if you don't like the [H] review... then i don't think OVERCLOCK.net is the right place for you to be asking advice smile.gif

your system as it is listed. will NEVER pull 1200w from the wall (regardless of efficiency) even if you go for a world record LN2 OC on both the CPU and GPU smile.gif it's a really tough stretch to even reach 500w on a single GPU build so i recommended what i felt was appropriate to your system. what you do with that advice, is up to you.

as far as the VRM heatsink on your GPU. i recommended the thermalright product because of the pic you linked in your OP...



do you not see how badly the PCB on your video card is bent?

it's obvious the card is not designed to carry the additional weight of the intel stock heatsink that far in the back. the thermalright VRM heatsink is both lighter and designed for the purpose of cooling VRM. meaning it goes across in a long rectangular shape and touchs all the VRM. it is designed to catch air from your intake fan for cooling unlike the intel heatsink which is designed with a top down fan in mind. intel heatsink is designed to cool down a square shaped surface like the IHS of a CPU not across like how VRM's are arranged. besides the unit i linked is only an example. they make other models for different vid cards so pick whichever you feel is more approprate... and i specifically said MOD it onto the HG10. i didn't expect it to just bolt onto a corsair product that is designed YEARS later and have it suddenly fit...


anyway. like i said. it's YOUR build. do what you feel is right. I was only trying to help. but i guess it's not what you are looking for. anyway... good luck with your build.
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