First Time PC Build - Questions about Fans pin3/4, speed, and overall

Tomtom93 · Aug 25, 2015

Hi Everyone,

I've been following this forum for quite a while now, but decided to join now, as I would like to get to know few things on assembling a pc.
So, I ordered all the needed parts and will be building the pc somewhere about friday,
never done that before, I would rather call myself aware but i will appreciate very much any help from you guys.

The specs are:
Intel I7 4790K
Asus Gtx 970 Strix 4gb
Mobo Asus Maximus VII Ranger Rog
Crucial ballistix elite cl9 16gb ram
wc corsair h110i GT
PS Corsair CX 750W Bronze Box
SSD Drive Samsung 850 evo 120gb
HDD 1tb seagate
case phanteks enthoo pro windowed
1 200mm fan from areocool
2 140mm fan from corsair quiet edition

First of all, what you think of such configuration? Will those parts colaborate well with each other, or I should change something?

Now for the questions - What bothers me is the fans and their speed.
I cannot find any info how many pin4 and pin3 does my motherboard have. How should i connect those fans to the mobo for them to run correctly (not at full speed all the time)
Can please someone explain how this works? Will I be able to control the fans within the system or need a third party controler like the asus rog front base?
Also, will be one 200mm fan at the back of the case enough to pull out the hot air from inside, if the rest will be pushing cool air?
I also heard about calibrating the fans after instaling them, can someone explain to me how it'll work in this scenario?

Any other advise on how to build a pc, tips etc are very much welcomed.
I will post some pics when I get the parts and when I finish (hopefully) assembling them.

Thanks for any help !
Tom

mudpuppet · Aug 25, 2015

First, the build looks fine. I would imagine it's for gaming so nothing jumps out at me as a big "no no." Most anything else would be nit-picking and personal preference. Like me, for example, would grab a larger SSD. 120 is fine for your boot drive, but I like to be able to load 4-5 games on it as well, but I have 2 ssds for that.

From a quick google search, the motherboard has three 4-pin connectors. http://rog.asus.com/forum/showthread.php?49179-Maximus-Ranger-2-fans-on-1-header My case has a hub built in so I just go off of that and the speeds they are at is just fine for my needs. That's not much on the fans but it's what I can offer atm on how they would work for you. As far as the fans, you don't to have a huge fan in the back for air flow, I have a single 140 that works well with the three intake in the front and the two up top blowing air through the rad to exhaust it.

As far as tips go, there are TONS of build guides via youtube. you can probably google your part to see how it was installed (google your motherboard and I bet there are a few videos of how they set everything up). Generally you set up the motherboard and case separately, install what fans you need to and seat the CPU and RAM in the motherboard before it goes in the case. You can do a power up test to make sure your board functions before actually installing it in the case, but that's a preference in case the board is DOA, you don't have to then take it back out. Skipping that, though, this is roughly the order I would do it... (cliffnotes version)

1. Install PSU into case
2. Install fans into case (radiator as well)
3. Install CPU into motherboard
4. Install RAM into motherboard
5. Install motherboard into case
6. Seat Cooler on CPU
7. Install HDD/SDD
8. Install GPU
9. Connect all cables to appropriate hardware (power, data, fans, etc)
10. Step back and fire it up

Tomtom93 · Aug 25, 2015

Thanks for the answer . Basically 4 pins on mobo allow to control the fan speed via uefi or some other build-in software from windows level?
The fans i bought are all 3 pin, will i be able to connect them to those 4 pin ports and control them aswell?

Also thanks for the quick quide on how to assembly, will be a good add for other guides from yt

Paperdoc · Aug 25, 2015

I can't find a ROG model of that mobo, but I got the manual for the Maximus VII Formula series mobos here:

http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/MAXIMUS-VII-FORMULA/e9796_maximus_vii_formula_ug_v2_for_web_only.pdf

See pages 3-45 and 3-46 for configuration of fans. Your are lucky! The 4-pin mobo fan headers on your board can be made to act instead as 3-pin ports, and you need this feature. (A true 4-pin fan port works only in PWM Mode which cannot control the speed of a 3-pin fan. But a 3-pin fan port works in Voltage Control Mode to control a 3-pin fan.) So you can connect your 3-pin fans to any of the board's CHA_FAN ports - a 3-pin fan's connector will fit onto a 4-pin port just with 1 pin not used. When you first start up go into BIOS Setup and go to the Monitor Menu and Fan Speed Control. You can set the options for your CPU_FAN and for the CHA_FAN ports you use. For CPU_FAN the simplest setting is AUTO and let the mobo figure it out. For the CHA_FAN ports set them to "DC Mode", then set the Chassis Fan Profile to "Standard" to let it exercise automatic control. To ensure this control of case ventilation fans is based on the correct temperature sensor, set "Chassis Fan Source" to "MB". Don't forget to SAVE and EXIT so your new settings are saved.

Tomtom93 · Aug 26, 2015

Thank you Paperdoc, that clarified me a lot of things and worries.
I'll probably post more questions when I start assembling.

Paperdoc · Aug 26, 2015

Thanks for Best Solution. And we'll all be glad to help if you need more.

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First Time PC Build - Questions about Fans pin3/4, speed, and overall

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