xfx 850w fan change

OvEr_KiLL · 2 Dec 2013 at 15:25

ok as some of you know i have won the corsair 650w from 8pack and will be using that in my system!

the xfx 850w non modular i have now is making a weird noise, its the ball bearings in the fan going after 1yr!!
so..
the fan is 135mm - ADN512UB-A90 rated at 84cfm, yes i know i cant get 135mm fans!
so im going to get a 120mm rated as close to 84cfm airflow as i can get and zip tie it with the 135mm holes with a 3 pin to 2 pin adapter, as the fan in there now is 2pin
the question is, will the fan in there now be PWM or not? i cant find much info about this fan and some review said its not PWM but what do you think?

OvEr_KiLL · 2 Dec 2013 at 15:46

right guys,
the colors on the 2 pin are black and red....which is NOT pwm right ?

spixelspixel · 2 Dec 2013 at 15:47

It might be the that the fan is just clipping the clear plastic that guides the airflow. Known to happen on the xfx psu's

OvEr_KiLL · 2 Dec 2013 at 15:50

did think about that but didnt want to remove the clear plastic as it must be there for a reason...i dont think it is because when i took the fan off the psu and spin it with my finger it still made the noise, obviously not as loud but it was still there

smilertoo · 2 Dec 2013 at 15:51

If you now have a spare psu id RMA the noisy one, once you break the warranty seal it's worthless if anything goes wrong with it.

spixelspixel · 2 Dec 2013 at 15:53

OvEr_KiLL said:
did think about that but didnt want to remove the clear plastic as it must be there for a reason...i dont think it is because when i took the fan off the psu and spin it with my finger it still made the noise, obviously not as loud but it was still there

Yeah it must be the fan then.

Do you like yellow?

Looks like a perfect replacement

http://www.aliexpress.com/item/Free...mm-13-5cm-135mm-12V-dual-ball/1364969016.html

OvEr_KiLL · 2 Dec 2013 at 15:56

nope cant rma it because i have messed up the warranty sticker by opening it up
im probably getting the aerocool black shark 120mm and zip tying it in

OvEr_KiLL · 2 Dec 2013 at 16:01

so am i right, the 2 pin will not be pwm as the cables are black (ground) and red (power)

mushtafa · 2 Dec 2013 at 16:05

It will probably bot be PWM. I assume the PSU would just control the voltage to the fan to make it faster/slower.
I'm going to be changing my fan soon in my OCZ ZT750, that's 2 pin as well.
Let me know how you get on

Posted from Overclockers.co.uk App for Android

OvEr_KiLL · 2 Dec 2013 at 16:07

mushtafa said:
It will probably bot be PWM. I assume the PSU would just control the voltage to the fan to make it faster/slower.
I'm going to be changing my fan soon in my OCZ ZT750, that's 2 pin as well.
Let me know how you get on

Posted from Overclockers.co.uk App for Android

yup will do mate, in this thread...i have found 2 differnt sizes of 3 pin to 2 pin adapters so all is good

il measure the one i have now when i take the psu out of my case and order the right size one, its either 9mm or 6mm width

OvEr_KiLL · 7 Dec 2013 at 17:26

found a 3 pin to 2 pin adapter online and also bought the 120mm aerocool black shark fan from oc (didnt want led) because the airflow is rated a tiny bit under the original 135mm which is fine and i also know that the aerocool fan doesnt half shift some air!

right its done and working, all screwed back together as normal!!!! didnt test it properly just connected 8 pin and the big long one

fan on the bracket thing needing zip tie ends cut off, bracket was what the original 135mm fan was screwed on

fan on the bracket ends, cut and screwed in psu like normal

edit. and what i did with the loose connectors at the bottom i tucked them under the silver bracket above it not touching the fan at all

Tealc · 7 Dec 2013 at 19:04

There doesn't need to be 4 wires for the fan to be PWM controlled. The PSU pcb may well feed the fans with a 12v PWM signal just using the two wires.

OvEr_KiLL · 7 Dec 2013 at 19:36

Tealc im sure i read somewhere that the original 135mm fan is not pwm.. i hope the fan i have stuck in there changes speed just like the 135mm

Tealc · 7 Dec 2013 at 22:19

It will. It may have a different speed characteristic though.

OvEr_KiLL · 7 Dec 2013 at 23:36

Tealc said:
It will. It may have a different speed characteristic though.

yep, it has lower rpm but shifts near enough the same rated air

Reedweaver · 12 Oct 2014 at 15:39

OvEr_KiLL said:
yep, it has lower rpm but shifts near enough the same rated air

Any problems with the new fan?

I am about to do the same with my XFX 850w due to noisy fan. Ive tried a drop of oil under the fan sticker but its still noisy...squeeking and rattling etc.... I took the fan to pieces in the end and the bearings are shot...

Reedweaver · 15 Oct 2014 at 08:07

I've replaced the stock fan with a Cooler Master 120mm JetFlo. This fan has threaded screws rather than the standard ones so they are perfect when you drill holes in the fan bracket.

Quiet as the grave now...