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Old 7th May 2012, 19:58   #1
andyh
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CM Megaflow v Corsair 650D stock fans

I have tried looking for the specs about the stock fans in the corsair 650d and cannot find any. Can anybody with this case who has switched the 200mm fans out and replaced them with the Megaflows tell me if they are much quieter.
I am running the stock fans on the inbuilt controller on low and they still seem quite noisy.

Thanks
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Old 7th May 2012, 20:47   #2
almostgfx
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ive swapped mine around and i never had a problem with the stock fans with the fan controller that came with the case from overclockers that made them quieter anyway.

The megaflow is really quiet though i never heard them. Loudest fan in my pc is the graphics card sometimes. My whole system runs really quiet


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Old 7th May 2012, 21:05   #3
King Damager
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I believe Megaflows or Spectre's tend to be the best choice for 200mm, just as a heads up.

kd

Last edited by King Damager; 7th May 2012 at 21:16.
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Old 7th May 2012, 21:10   #4
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I wouldn't recommend the Spectre Pro fans if you value silence.

I have used both 120mm and 230mm versions, they are too loud compared with the standard Spectre non pro fans

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Old 8th May 2012, 19:34   #5
andyh
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Thanks for the heads up about the spectres. Looking at the specs for both the CMs and the spectres, the CM push a lot more air but at a lower pressure, any thoughts on which suit the this case better.
Am I also correct in thinking that fitting the CM (due to them being thicker) to the front requires the removal or moving of the lower hard drive bay.

Thanks
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Old 16th May 2012, 06:14   #6
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replaced red 1000rpm 200mm megaflow for a blue 800rpm 200mm megaflow, 1 front, 1 top. Not sure whats the best option, top to blow in, or spit hot air hot, becouse once its used as an exhaust, it creates a better suction for front intake and hense airflow. Dual vipers on antec in my case, dont really cause a problem, thats what i keep telling myself

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Old 16th May 2012, 09:13   #7
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Got a MegaFlow on the front of mine. Swapped the LEDs out with white ones to fit in with the power and HDD lights on the case. Very quiet fan, recommended.


Quote:
Originally Posted by andyh View Post
Am I also correct in thinking that fitting the CM (due to them being thicker) to the front requires the removal or moving of the lower hard drive bay.
Can't help you on that one as I have never used the front HDD bay. Sorry.


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Old 16th May 2012, 09:53   #8
Twirlywoos
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Quote:
Originally Posted by topgun06 View Post
Got a MegaFlow on the front of mine. Swapped the LEDs out with white ones to fit in with the power and HDD lights on the case. Very quiet fan, recommended.




Can't help you on that one as I have never used the front HDD bay. Sorry.
would you mind taking a pic of the front of your case with the grill on? I'd like to see how the leds look illuminated through it.

If only Noctua made 200mm fans I'd buy one in a heartbeat.
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Old 16th May 2012, 10:02   #9
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I'll take a picture when I get home.


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Old 16th May 2012, 10:07   #10
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mid HDD, ssd and bottom cages removed. Top 200mm, front 200mm

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Old 16th May 2012, 10:15   #11
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Just a quick word. I turned top fan around from blowing in, to blowing out, stressed gpu went from 62 to 57

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Old 16th May 2012, 10:47   #12
Twirlywoos
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Quote:
Originally Posted by topgun06 View Post
I'll take a picture when I get home.
thanks
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Old 16th May 2012, 13:18   #13
TaeK
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Quote:
Originally Posted by CivilDrone View Post
Just a quick word. I turned top fan around from blowing in, to blowing out, stressed gpu went from 62 to 57
Corsair recommend you do that anyway. Front 200mm to take in air, and the top 200mm to exhaust the air.


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Old 16th May 2012, 17:28   #14
topgun06
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Quote:
Originally Posted by majnu View Post
would you mind taking a pic of the front of your case with the grill on? I'd like to see how the leds look illuminated through it.
Front of case with grill on:





Poor poor poor phone quality pics etc...


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Old 16th May 2012, 19:28   #15
andyh
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I bought one of the 200mm spectre's and really disappointed with it to the degree that I will consider RMA'ing it. It is really quiet but that is only because it hardly moves any air at all. The OC web site states a CFM of 65 and a air pressure of 1.48mmH2O however the box states a CFM of 47 and an air pressure of 0.41.
I currently have a megaflow on its way so hopefully that will be a significant improvement.
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Old 18th May 2012, 10:17   #16
Mark A
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The CM fan is a lot quieter than the stock fans, but 'Meagreflow' would be a more fitting name.

They also use a cheap sleeve bearing which can start to whine after a while.
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Old 18th May 2012, 11:14   #17
wildman_33
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If you fit a spectre pro be prepared for lots of noise, the front grill is too close and will create turbulence and a lot of noise. To solve the problem I cut the stock 200mm corsair fan off its frame and used the frame as a spacer to space it from the grill. Its now silent.
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Old 23rd May 2012, 15:34   #18
Twirlywoos
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Quote:
Originally Posted by andyh View Post
I bought one of the 200mm spectre's and really disappointed with it to the degree that I will consider RMA'ing it. It is really quiet but that is only because it hardly moves any air at all. The OC web site states a CFM of 65 and a air pressure of 1.48mmH2O however the box states a CFM of 47 and an air pressure of 0.41.
I currently have a megaflow on its way so hopefully that will be a significant improvement.
Which fan is that? I ordered the Spectre Pro and the tech specs are different.

- Air Flow (CFM): 148.72 CFM 10%
- Air Pressure (mmH2O): 1.26 mmH2O

Thanks for the pic top gun I went with the BitFenix Spectre PRO's in the end.
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Old 23rd May 2012, 16:21   #19
andyh
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Quote:
Originally Posted by majnu View Post
Which fan is that? I ordered the Spectre Pro and the tech specs are different.

- Air Flow (CFM): 148.72 CFM 10%
- Air Pressure (mmH2O): 1.26 mmH2O

Thanks for the pic top gun I went with the BitFenix Spectre PRO's in the end.
It was the standard spectre 200mm fan I got, not the pro version. One other odd thing I noticed about the standard spectre is that you can only mount it one way. If you want to mount it at the front it can only be used as an exhaust not an intake.

Still looking for a suitable fan for the front, one that doesnt need the removal/moving of the hard drive bays and is quiet, any more suggestions.
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Old 23rd May 2012, 16:42   #20
Twirlywoos
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Quote:
Originally Posted by andyh View Post
It was the standard spectre 200mm fan I got, not the pro version. One other odd thing I noticed about the standard spectre is that you can only mount it one way. If you want to mount it at the front it can only be used as an exhaust not an intake.

Still looking for a suitable fan for the front, one that doesnt need the removal/moving of the hard drive bays and is quiet, any more suggestions.
I'll let you know how I get on with the pro version. They should be with me by Friday at the very latest.
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Old 2nd Jun 2012, 08:42   #21
andyh
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Quote:
Originally Posted by majnu View Post
I'll let you know how I get on with the pro version. They should be with me by Friday at the very latest.
Majnu, how did you get on with the pro version?
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Old 2nd Jun 2012, 10:10   #22
Twirlywoos
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Quote:
Originally Posted by andyh View Post
Majnu, how did you get on with the pro version?
Noise is something which is very subjective. PC distance, ambient noise, other fans all play a factor.

My PC is about 1.5m away from me and I have Scythe GT AP 15's all running at 1250-1300 rpm through my fan controller.

At full 900 rpm the Spectre Pro I can describe as having only a wooshing or gush of air sound, there are no rattles, no whining and it runs very smooth. When I remove the front grill the harmonics of the fan changes; I can only describe the sound as someone using a hair dryer at a very far distance. At 900 rpm the Spectre's pull in a load of air. I don't have any scientific tools to measure it by I can feel it when I put my hand over the back of them.

Using my controller and reducing the speed to 700-750 rpm (which is what I keep them at), they are quiet. I can barely hear them and the together with the sound of the Scythe's I can just hear the gentlest of whoosing. When I remove the front grill the harmonics of the fan doesn't change, it is at an acceptable noise level. At these speeds it still intakes a fair bit of air.

Testing at both 900 and 700 rpm, according to Asus AI Suite, doesn't change the temps of my GPU. But maybe I should use Hardware monitor to get another opinion as that factors in SSD temps.

Obviously during the night when there is less ambient noise the fans will sound louder but then that is normal for everything.

HTH.

Edit - Depending on which you think look better I would go with the Mega Flows as others here rate them. It's cheaper, has LED's and will run at the reduced speed which I keep the Spectre Pros on. But if you have multiple GPU's then the Spectre Pro may be better option if you can tolerate a gushing of air or a whoosh sound.
Last edited by Twirlywoos; 2nd Jun 2012 at 10:15.
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Old 2nd Jun 2012, 19:34   #23
andyh
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Quote:
Originally Posted by majnu View Post
Noise is something which is very subjective. PC distance, ambient noise, other fans all play a factor.

My PC is about 1.5m away from me and I have Scythe GT AP 15's all running at 1250-1300 rpm through my fan controller.

At full 900 rpm the Spectre Pro I can describe as having only a wooshing or gush of air sound, there are no rattles, no whining and it runs very smooth. When I remove the front grill the harmonics of the fan changes; I can only describe the sound as someone using a hair dryer at a very far distance. At 900 rpm the Spectre's pull in a load of air. I don't have any scientific tools to measure it by I can feel it when I put my hand over the back of them.

Using my controller and reducing the speed to 700-750 rpm (which is what I keep them at), they are quiet. I can barely hear them and the together with the sound of the Scythe's I can just hear the gentlest of whoosing. When I remove the front grill the harmonics of the fan doesn't change, it is at an acceptable noise level. At these speeds it still intakes a fair bit of air.

Testing at both 900 and 700 rpm, according to Asus AI Suite, doesn't change the temps of my GPU. But maybe I should use Hardware monitor to get another opinion as that factors in SSD temps.

Obviously during the night when there is less ambient noise the fans will sound louder but then that is normal for everything.

HTH.

Edit - Depending on which you think look better I would go with the Mega Flows as others here rate them. It's cheaper, has LED's and will run at the reduced speed which I keep the Spectre Pros on. But if you have multiple GPU's then the Spectre Pro may be better option if you can tolerate a gushing of air or a whoosh sound.

Thanks for that.
Were you able to fit the fan without having to remove the hard drive bays?
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