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Fan Upgrade - CM 690 Adv. II

post #1 of 10
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hi all

actually i have the case mentioned above with stock fans. my h50 has stock fan too.

1. i wanna exchange ALL stock fans (case and h50) with something quiter and the same time cooler. and here we get to the second question

2. how should i place the fans for best airflow? actually: front - intake, rear and top - exhaust.
i thought to change it like this: rear - intake, top - exhaust, front - exhaust.
to cool more the 6950 id like to add a 140mm low rpm exhaust fan on the side panel. good choice to put one there?


at the moment i love the scythe slip stream because i red many good things about them.
ill order from http://www.overclockers-store.com/ve...-c-55_326.html
if u find some better fans on the store feel free to tell me


thx in advance
max
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post #2 of 10
Quote:
Originally Posted by maxik View Post
hi all

actually i have the case mentioned above with stock fans. my h50 has stock fan too.

1. i wanna exchange ALL stock fans (case and h50) with something quiter and the same time cooler. and here we get to the second question

2. how should i place the fans for best airflow? actually: front - intake, rear and top - exhaust.
i thought to change it like this: rear - intake, top - exhaust, front - exhaust.
to cool more the 6950 id like to add a 140mm low rpm exhaust fan on the side panel. good choice to put one there?


at the moment i love the scythe slip stream because i red many good things about them.
ill order from http://www.overclockers-store.com/ve...-c-55_326.html
if u find some better fans on the store feel free to tell me


thx in advance
max

As a recent convert to positive pressure i won't preach but check this out:
http://www.silverstonetek.com.tw/tec...id=wh_positive

http://www.silverstonetek.com.tw/tec...tid=wh_airflow

So to sum it up put the top as intake the rear as exhaust and the front as intake.
As for what fans to use, i'd suggest 2 x 140mm Noctuas on the top as intake and the rest Scythe Gentle Typhoon AP13s. Also on 690 II you can mount 1 fan on the HDD cage, which i'd advise doing so it can move more air towards the video card.
Edited by Pentdragon - 8/21/11 at 2:29pm
post #3 of 10
I don't mean to hijack your thread, but I'd like to say that I have the same exact case, and the same exact problem. Since we both want a similar answer, why make another thread?

I was playing around with different (mockup) configurations, and I came up with 2 that may be good... I'd like some advice from an experienced person though as I am a novice.

A:











B:









C:

Edited by EliteGamer83 - 8/21/11 at 6:32pm
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post #4 of 10
I would use a variation of C. Move your top 140mm to the slot in front of it and use the fan as an intake.

See this thread by ehume as to why:

http://www.overclock.net/air-cooling...g-warning.html
    
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post #5 of 10
But than the only exhaust is the rear 120mm fan... Wouldn't that be a bit much positive pressure? I think the same thing is being discussed in THIS thread.


And yes... my graphics card vents (mostly) into the case, 25% goes out the back.
Edited by EliteGamer83 - 8/21/11 at 6:58pm
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post #6 of 10
Quote:
Originally Posted by EliteGamer83 View Post
But than the only exhaust is the rear 120mm fan...


And yes... my graphics card vents (mostly) into the case, 15% goes out the back.
That is the point of positive pressure. The CM 690 has plenty of extra vents where air can be pushed out. I have a CM 690 II and I have been using that set up and I have seen great results. I just recently took out my rear 120mm fan. I currently have no exhaust fans in my case. The air is exhausted passively through all the gaps in the case. You'd be surprised how much more effectively it is when compared to a traditional case fan arrangement
    
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post #7 of 10
I have the same case, here is my fan set up...the only diff is I have NO exhaust fan. None what so ever.
[IMG][/IMG]
This is what gave me the best temps thus far.

Basicly just block of the Top rear fan mount position. use the forward fan mount as intake, remove the exhaust fan. keep the vented PCI covers. not only dose this keep my temps nice and cool, but has almost no dust in my system. good luck!
Edited by KhaoticKomputing - 8/21/11 at 7:23pm
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post #8 of 10
Quote:
Originally Posted by KhaoticKomputing View Post
I have the same case, here is my fan set up...the only diff is I have NO exhaust fan. None what so ever.
[IMG][/IMG]
This is what gave me the best temps thus far.

Basicly just block of the Top rear fan mount position. use the forward fan mount as intake, remove the exhaust fan. keep the vented PCI covers. not only dose this keep my temps nice and cool, but has almost no dust in my system. good luck!
I know a lot of people say cut out the rear grill, but I'm not going to sabotage my new case.

Because my cooler isn't very big (or high performance), should I do push/pull on the CPU cooler and remove the rear fan. Or just do push, and leave the back fan to exhaust?

As for the CPU fan(s), should I go with the Scythe Kama fans? or Scythe Slip-stream?

As for case fans (not cooler fans), what's the best quiet fans besides the Scythe Gentle Typhoons? I can't find them for a decent price, they're sold out everywhere.
Edited by EliteGamer83 - 8/21/11 at 11:26pm
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post #9 of 10
Quote:
Originally Posted by EliteGamer83 View Post
I don't mean to hijack your thread, but I'd like to say that I have the same exact case, and the same exact problem. Since we both want a similar answer, why make another thread?

I was playing around with different (mockup) configurations, and I came up with 2 that may be good... I'd like some advice from an experienced person though as I am a novice.
I think a modified C option, with top fan intaking on the right side of the CPU cooler (if the cooler is mounted to exhaust at the back) and without the bottom 120mm fan, because imo, it will interfere with the flow direction of the 2 front fans. You could put this fan IF it has a lower CFM than the one on the HDD cage, on the side panel so it can intake more "cool" air towards the video card, but as always for intake fans it will require a dust filter.

On the 690 II i think it's also beneficial to block or atleast put some dust filter on the side panel vents. The key to positive pressure is to have all intakes filtered....otherwise it defeats the purpose.
Edited by Pentdragon - 8/22/11 at 1:42am
post #10 of 10
Quote:
Originally Posted by EliteGamer83 View Post
I know a lot of people say cut out the rear grill, but I'm not going to sabotage my new case.

Because my cooler isn't very big (or high performance), should I do push/pull on the CPU cooler and remove the rear fan. Or just do push, and leave the back fan to exhaust?

As for the CPU fan(s), should I go with the Scythe Kama fans? or Scythe Slip-stream?

As for case fans (not cooler fans), what's the best quiet fans besides the Scythe Gentle Typhoons? I can't find them for a decent price, they're sold out everywhere.
I did not cut out the grill on the rear of my case and temps are fine for me. stay away from slip stream fans for the CPU cooler, they are weak Scythe also over rated the fans. I can recomend tons of fans. So here goes!
For your cooler (H-50) is going to like a diff set of fans that a normal air cooler, Your rad will LOVE 120x38mm fans, but they come at a price...noise. Rad's work best with high static perssure over raw CFM output. If I was in your position I would use two 120x38mm fans on the rad, with a fan controller to keep noise in check.
Here are the target fans for your rad
Panaflow med speed fans or these Panaflow Low speed fans. now I will warn you these are not quiet fans, so a fan controller will be needed to keep them in check, use one of these
Rheosmart 6 or Rheosmart 3. I have a few reasons for this set up they are"
1. the 38mm wide fans will give you better results over a standerd 25mm wide fan.
2. Using a low or med speed 38mm fan will allow you to turn them downto a level of noise you can stand.
3.I recomend the Rehosmart becouse thats what I use, it just plain ROCKS! I put two 120x38mm high power fans(SanAce1011's) +7 other 75+CFM fans on ONE channel for just about a week and it loved it, solid controller. the other reason for this controller is it matches are case(CM690II) perfect, it looks like it was made for our case. but I wouldnt suggest using the "smart feature with hi po fans. You could use the Rheosmart 3 and be fine put both 38mm fans on one channel and split the other fans evenly across the other two channels.

For case fans I would recomend using Yate loon med speed fans or the high speed fans if you can find them, just undervolt them with the controller for the noise level you like. they are great fans tons of amazing reviews!
To get around the mobo flipping out over not having a fan plugged into the CPU fan header I used this little guy in the fan location behind the mobo tray, but any 80x15mm fan will work. he makes almost no noise at full power, i cant even tell its on unless I look at the blade's moving. Scythe GT's are also AMAZING fans! I hope this helps you out some best of luck and let us know what works for you!
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