Plugging case fans in to Evga PSU

Toggle sidebar Toggle sidebar
R

rabbitcfh

Honorable
Mar 15, 2014
23
0
10,520
Hello, I am building my first PC and I have a question regarding connecting case fans. My motherboard is MSI Z87 G45, my PSU is Evga NEX750G Gold and my case is Zalman Z11+.

I plugged two of the case fans into SYSFAN1 and SYSFAN2 slots on my motherboard, but the two remaining fans have different plugs - shown below:

ssf48fR.jpg


vX5svII.jpg



The PSU came with some cables including these (there are two that say PERIF on them):

baKifzd.jpg


LEXtLPL.jpg



And this is my PSU:

120-PG-0750-GR_XL_5.jpg



Am I correct thinking that I need to connect the fan cables in pics 1 and 2 to the PERIF cables in 3 and 4, and then plug the ends labelled PERIF into the two PATA slots in the PSU?

If that is right, can I (should I?) instead connect one of these cables into the SYSFAN3 slot on the mobo, and only the last remaining fan into the PSU?
 
Sort by date Sort by votes
J

jb0nez

Honorable
May 31, 2012
82
0
10,640
I don't know about the Z87, but the Z77 has CPUFAN, SYSFAN1 and SYSFAN2 as the PWM (4 pin connector) fan connectors, plus two more connectors for non-PWM (3-pin) fans. So you shouldn't even need the adapters you picture (called MOLEX). The case fans in question likely have a 3-pin connector up the cable a little ways (never seen a case fan with just Molex connectors but I suppose they exist), just use that and plug into your mobo. My Rosewill case has fans that have both 3-pin and the larger Molex connectors; I was able to hook everything up to my MSI z77 motherboard...one front, one side, one back, one top, and one cpu cooler. I added a second cpu cooler fan though and at that point had to use a molex connector from my power supply for one fan.

Edit: The "Perif" connector you picture looks like it's a PCI-E power connector- you plug those into the top of your video cards. Not for fans.
 
Upvote 0 Downvote
R

rabbitcfh

Honorable
Mar 15, 2014
23
0
10,520


I had another look and I can swear the two fans (one rear and one side) only have molex connectors as in pictures 1 and 2 (instead of 3 pin connectors like the other 2 case fans do). This cable came with the mobo - is this a molex to 4 pin adapter and can I use it to connect one of the fans (which one would be better - the rear one?) to the remaining SYSFAN pin on the mobo?

yTL6XdJ.jpg


But why does it have two 4 pin connectors?

The case also came with this cable:

SicI2Uj.jpg


What do I need this cable for?

Also this is my mobo's layout if you need it: http://www.pcgameware.co.uk/images/MSI-Z87-G45-GAMING-Motherboard-top.jpg
 
Upvote 0 Downvote
R

rabbitcfh

Honorable
Mar 15, 2014
23
0
10,520


Which slot in the PSU should I connect it to?
 
Upvote 0 Downvote
TanFrash1

TanFrash1

Distinguished
Mar 3, 2014
127
0
18,710


The PATA ones (at the lower left).
 
Upvote 0 Downvote
R

rabbitcfh

Honorable
Mar 15, 2014
23
0
10,520


Ok thanks, and to connect them to PATA should i use PERIF cables?
 
Upvote 0 Downvote
J

jb0nez

Honorable
May 31, 2012
82
0
10,640
I tried to find a schematic for your mobo online to determine how many fan connectors you have on it--there should be at LEAST 3x4 pin (labeled CPUFAN and SYSFAN1 and 2) and 2x3 pin ( labeled SYSFAN2 and 3) since my MSI z77 has those. But I couldn't find one. Regardless, that molex adapter with two 4 pin connectors hanging off allows you to connect 2 fans to the molex which then goes to PATA on the PSU. Keep in mind, 4 pin fans are meant to dynamically adjust rpm's, but will not if connected to a molex--they'll run at their max rpm all the time (this is not a problem, just a noise consideration; you can plug 3 pin fans into them if needed). That second adapter you picture: I'd need to see the far end connectors but it looks like a molex to PCI-E adapter to me, again for video cards. Since your PSU has built-in connectors for 2 video cards the general recommendation is to not use those to power video cards.
Hope that helps!
 
Upvote 0 Downvote
TanFrash1

TanFrash1

Distinguished
Mar 3, 2014
127
0
18,710


No, these cables he showed are not adapters, but the Molex cables themselves. The plug looks like a PCI-E one, but it should be plugged in the PATA power output, since the PCI-E output has 8 pins, and the PATA has only 6.
 
Upvote 0 Downvote
J

jb0nez

Honorable
May 31, 2012
82
0
10,640
Oh I understand, that's the PATA side of the PSU connector. Roger that. Although just FYI PCI-E connectors can be 6 or 8 pin. Most quality PSUs (like yours) have 8 on all connectors, and you can kind of peel back 2 if you need only 6.
 
Upvote 0 Downvote
R

rabbitcfh

Honorable
Mar 15, 2014
23
0
10,520


Thanks, it worked! I connected the 3 remaining case fans (turns out there are 5 case fans, not 4 like I initially thought. Found one more on one side) using the PERIF cables and plugged them in straight into the PSU. Works great!

jbonez, thanks to you too!
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom