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Corsair H100i push/pull with splitter? HELP

post #1 of 37
Thread Starter 
Hey guys, I currently have an arorus gaming 3 motherboard x299 with the i7 7740x CPU, I have been using an h100i cooler for quite some time now. I managed to easily overclock my CPU to 5.1ghz stable at only 1.27v and I also have my corsair vengiance 3000mhz I XMP profile overclocked to 3200mhz. Currently I run about 28c at idle and on average 50-60c during gaming. I have pushed my CPU to 5.3ghz at around 1.4v stable but it gets around 80-85c when stress testing. I love my h100i it does very well but my plan is to run a pushpull setup, if I'm amble to squeeze another 3-8c cooler temps out of it I would be happy for the money, cuz temps are everthing when overclocking and noise does not bother me.

I'm currently running my radiator at the very top of my case with two Fans on the bottom of the radiator pushing air through the radiator and out though the top of my case (as an exhaust) so I would like to add two more fans on top of the radiator as pull which will be hidden underneath the top panel of my tower which can wailer be snapped on or off for cleaning and fan mounting.

My current delemma... the two fans I am currently using are the grey and black stock SP 120 fans that come with the cooler, at first I was just gonna buy two more of those exact fans and run them up top in pull, but when i looked online I saw corsair has sp120 (high performance fans) as well as (sp120 quite fans.) the performance fans have a higher rpm as well as a higher amperage .8amp each I think, and the quite ones are around .5amp each I think. MY QUESTION to you guys is will I be able to just run a splitter off the corsair pump and plug in all 4 fans to the corsair fan controller and then into my CPU fan header? From what Iv read online the fan controller is only a 4amp, so I feel I will be pushing the limits of both the corsair fan controller as well as the CPU header on my motherboard. I really don't wanna burn it out but I would really like to have all 4 fans controlled though the corsair software. I also found a splitter cable that has a molex on the one end for a sata power cable, would that work? Would I then be able to run all 4 fans off the 1 corsair controller and the 1 CPU fan header? I would think that the molex adaptor would allow for this to happen while not overloading the single CPU fan header with too many amps..

If neither of these solutions work, then I was thinking about connecting all 4 fans to the fan controller on my tower, I have two fan controller knobs that can control up to 3 fans each, so what I was thinking was connecting my push fans to one knob and my pull fans to another knob, eliminating the corsair controller all togeher; This way I would be able to find that perfect balance of rpm for both push and pull fans separately.

Last option of mine would be to leave the two Fans controlled though the corsair controller and then just simply plug the two other fans into the motherboard fan headers (which I really don't wanna do)

I also plan on buying some 1/8" rubber door sealer from a local hardware store and using it between the fan and the radiator so that there is less static pressure being lost. The rubber foam has a sticky backing so I plan on lining the frame of the fan with it before mounting the fans back onto my radiator, this way there is a much greater seal between the radiator and the fans thus making for better airflow across the fins of the radiator resulting in cooler CPU temperatures.

Let me know what you guys think about all this.. also are the grey and black fans that came with my water cooler basically the same as the (sp120 high performance fans) cuz from what I saw I think the RPM is the same. The only real difference I noticed was that the high performance fans have the color changing rings as well as tubby bushings to quite the sound of the fan. I think they use the same amperage tho as the grey and black stock cooler fans.

If you guys have any input or can help me with my delemma I would be greatly appreciative. Also if you have any other SP fan suggestions that would possibly cool even better than the corsair sp120s then please let me know. Like I said I'm not so worried about noise as I am performance, After all cooler temps is what I'm after.
post #2 of 37
First off, nice chip. thumb.gif

What I would do:

Purchase ML-120 fans to go between the case and radiator. They are higher static pressure fans and you'll need that because those fans will have to pull air through the radiator and then push though the case top. SLs are not near so powerful.

If you can, keep your pump and fans on different circuits. You might want to run your pump at a higher speed near idle than your fans.

It's fine to split your fans into 2 circuits. I run my outer fans together on one circuit and my inners on another and differ the curves enough to prevent annoying harmonics issues.

Use a cable adapter to run multiple fans off the same MB PWM connector and pull fan power directly from the PSU.

I squish small rolled-up strips of Scotch 2228 sealing tape to seal my fans against my case and rads.

Good luck. thumb.gif
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post #3 of 37
Thread Starter 
First off thank you smile.gif the chip has been great, I truely feel like
post #4 of 37
Thread Starter 
The chip has been great, I was actually able to hit 5ghz at just 1.6v vcore! I truely feel that I won the lotto or at least god a darn good chip. I know guys who can't hit 5ghz at 3.8v with the same chip. Once I was stable at 5ghz at 1.2v which was stock voltage I decided to work my way backwards in voltage just to see how low I really could go. I managed to hit 1.6v before it finally crashed during a benchmark.. but anyhow..

Thanks for your input. You mentioned SL fans? Do you mean the corsair SP series? Are you saying that the fans you recommended have a higher static pressure than the sp120 performance fans? If so I would be happy to buy those instead.. and as far as the fans and what they would have to pull through. The top fans will have to pull air though the radiator as well as though the steel panel with holes for air flow that the fans would be up against.. and the push Fans would have to push air up though the rad up to the second fan (pull) is it more important to have stronger fans on push or pull for this type of setup? And does anyone know if the stock corsair sp120 fans are the same static pressure as the sp120 performance fans? Cuz if so I would rather go with the sp120 performance cuz they have the rubber gromits and the colored ring so they will look much sleeker in my case being that they will be visable.

About using different circuits. That's a good idea, which is why I thought about keeping just the pump on the CPU fan header and having only control just the pump in the corsair link software.. this way I could put just the pull fans on one of my case controller knobs and Just the pull the other controller knob , this way I can find the perfect rpm with both push and pull fans separately for best performance vs noise.. only issue with that is I don't think I will be able to see the fan speed on my computer. Which would really suck. Cuz I always like to watch them, so I would have To buy a special controller just so that I could control the pull and push fans separately just so I could see the rpm of the fans as I adjusted them. Otherwise I could only go by sound .. this is why my only other two options are really to put them all on the same header with a splitter and a molex, then again they will only come up as one single fan speed anyhow. So I just don't know what to do..

Maybe I should just plug each individual fan into a separate motherboard header - cuz I think I have enough of them .. and then just set my motherboard to PWM.. cuz I can program my motherboard to do voltage only, power only, curve, static, or PWM.. what would be the advantages of setting it to PWM and would I need to make sure the fan is a 4pin? Cuz I think most sp120 fans are 3pin only
post #5 of 37
Thread Starter 
I'm just so confused.. my goal is simply this.. to allow for the best possible air flow performance to go though my radiator making sure I choose the best possible fans for the job, but I also want to figure out a way I can control all 4 fan speeds, or at least both push fans and both pull fans meanwhile being able to monitor their RPM.. that's what I want lol. Just harder to figure it out than I thought it would be... maybe my best bet is just to keep either the push or the pull fans on their own header, and leave the rpm fixed to full speed, and then run the other two fans though the corsair program and at least I will be able to alter the flow of those two to minimize sound or to find an rpm that works the best
post #6 of 37
Quote:
Originally Posted by NoBiffBetter View Post

I'm just so confused.. my goal is simply this.. to allow for the best possible air flow performance to go though my radiator making sure I choose the best possible fans for the job, but I also want to figure out a way I can control all 4 fan speeds, or at least both push fans and both pull fans meanwhile being able to monitor their RPM.. that's what I want lol. Just harder to figure it out than I thought it would be... maybe my best bet is just to keep either the push or the pull fans on their own header, and leave the rpm fixed to full speed, and then run the other two fans though the corsair program and at least I will be able to alter the flow of those two to minimize sound or to find an rpm that works the best

Buy a fan controller to control the rad fans. Bypass Corsair Link completely.
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post #7 of 37
Thread Starter 
I was thinking about that, corsair makes a mini controller that looks nice, does up to 6 fans and RBG lighting as well
post #8 of 37
Thread Starter 
The corsair mini commander would work though my existing corsair link.. i just don't know if it would show separate fan rpm for each fan? Or would all four fans just show up as one single rpm
post #9 of 37
if you like corsair link software then just get a 1>4 pwm bridge (extender) (or even a 1>8 if its cheaper and just blank off the excess headers with some insulation tape)

connect the pwm extender to the 4 pin fan output from the pump unit and all 4 fans to the pwm extender, you get them all running in the same profile (that's how I have my ml pro's connected on the h115i)

one thing to be wary of if you go for the ml fans they cannot be turned upside down, so you would need to mount them as intakes on the top of the case and pull on the underside of the radiator in the case ...

btw corsair website you should be able to just by 2 new fans for your h100i, they can be mounted anyway you need and bonus they already match your current fans so no problems with odd harmonic noises never mind them being way cheaper than ml fans
post #10 of 37
Thread Starter 
What your saying is exactly what I had first planned to do, this way I can run everthing off the corsair software. All 4 fans will show up as only one single RPM which kinda sucks but I would be ok with it if I can use the corsair software for everthing still..

Here's the problem tho, I have read multipul times that just using a splitter like you suggest won't work, cuz each fan is .50-.80 amps and a single fan header is only 4amp I think, so wouldn't I be overloading it? Also heard that the corsair controller is only rated for 4amps.. so again I feel I may overload something and risk frying my pump or worst, my motherboard header.

If you have an h115i and your doing the same thing, then I guess it would work, cuz I'm almost Positive the h100i and the h115i uses the same pump and all that? If that's the case maybe it will be fine..

The splitter your talking about does it also have a molex connector for additional power? Cuz this would eliminate the issue of overloading the fan header with the 4 fans because the molex adaptor would supply additional power to the fans to lessen the load off of the fan header.. if you really don't think it's needed, and say that a regular fan splitter with OUT a molex is ok, then maybe I'll give it a shot.

And about the fans, im not sure what fans you are taking about, but the fans I planned on using was the sp120 high performance fans.. I wanna use 2 of those cuz I am pretty sure they are identical as far as the static pressure ratings and everything else of the stock grey and black fans that come with the cooler.. I will have to double check tho.. cuz if the high performance fans do indeed pull more amperage then I will not go with them to be safe and will just stick with two more of the stock sp120 grey and black fans instead.. I just like how the sp120 high performance fans look, they are all black with a colored ring that you can change between red, white, or blue, and they also have rubber gromits on the corners so that they don't vibrate as bad as the stock grey and black sp120s.. but other than that I feel like it's prolly the same exact fan.. I'll check the specs and make sure before I purchase.
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