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H70 Fan power question...


TickleOnTheTum

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Hi,

 

I was wondering if it is OK to connect the 2 fans on the H70 to the fan control system in the CM Storm Sniper case so they can be turned up and down as needed?

 

Also is it OK that I currently have the pump connected to the PWR_FAN connector on my motherboard (ASUS P6T Deluxe V2)? That was the only spare 3 pin connector on there that would work the pump (wasn't that fun to find out the hard way! :eek:).

 

I'm pretty impressed with the H70 so far. My old TRUE-120 twin fans cooled to idle: 41, LOAD: 84. Now with the H70 I'm getting IDLE: 32, LOAD: 74. That's a 10 degree drop at load, well pleased!

 

TickleOnTheTum

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Hi,

 

I was wondering if it is OK to connect the 2 fans on the H70 to the fan control system in the CM Storm Sniper case so they can be turned up and down as needed?

 

Also is it OK that I currently have the pump connected to the PWR_FAN connector on my motherboard (ASUS P6T Deluxe V2)? That was the only spare 3 pin connector on there that would work the pump (wasn't that fun to find out the hard way! :eek:).

 

TickleOnTheTum

 

You could always connect the pump directly up to the PSU if you want too...

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Hi,

 

I was wondering if it is OK to connect the 2 fans on the H70 to the fan control system in the CM Storm Sniper case so they can be turned up and down as needed?

 

Also is it OK that I currently have the pump connected to the PWR_FAN connector on my motherboard (ASUS P6T Deluxe V2)? That was the only spare 3 pin connector on there that would work the pump (wasn't that fun to find out the hard way! :eek:).

 

I'm pretty impressed with the H70 so far. My old TRUE-120 twin fans cooled to idle: 41, LOAD: 84. Now with the H70 I'm getting IDLE: 32, LOAD: 74. That's a 10 degree drop at load, well pleased!

 

TickleOnTheTum

 

May not be the best solution if you have your case fans connected to the controller as well.

 

What will happen is as you turn down the CPU fans you'll also throttle down the case fans which will certainly make things hotter very quickly!

 

You can put in the inline resistors to slow the fans to about 1600 rpm or you can try this solution http://forum.corsair.com/forums/showthread.php?t=90743

 

Or if your mobo can control system fans conect it to a header but this will only control the fans by adjusting the voltage.

 

DAvid

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I already have the case fans running at minimum, as I have a 200mm front intake, a 200mm side intake and a 140mm bottom intake. Then there is a 200mm top exhaust and the H70 is set to intake at the back. I also have the corsair RAM cooler running, so there is plenty of air movement going on so add the fact that the side panel is open mesh as is the top and there is plenty of cool air getting in. Oh and the PSU intakes through the bottom and exhausts out the back.

 

With this set up I am getting temps of:

 

IDLE

Lowest core: 32

Highest core: 39

 

LOAD

Lowest core: 69

Highest core: 74

 

This is with an i7 920 D0 running at 4GHz (200 x 20). Load is produced by running Prime95.

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I already have the case fans running at minimum, as I have a 200mm front intake, a 200mm side intake and a 140mm bottom intake. Then there is a 200mm top exhaust and the H70 is set to intake at the back. I also have the corsair RAM cooler running, so there is plenty of air movement going on so add the fact that the side panel is open mesh as is the top and there is plenty of cool air getting in. Oh and the PSU intakes through the bottom and exhausts out the back.

 

With this set up I am getting temps of:

 

IDLE

Lowest core: 32

Highest core: 39

 

LOAD

Lowest core: 69

Highest core: 74

 

This is with an i7 920 D0 running at 4GHz (200 x 20). Load is produced by running Prime95.

 

I know the set up well I have the same case and I'm surprised you find it noisy, mine is only 48db - 52db 1 foot from the case, which is rated as quiet.

 

When ever stating temps you should include your ambient temp, ie. your room temp so we can know better how to advise, by example if you live in an Iglo those temps are high, but if on top a Volcano they are bloody good!

 

Also if running an OC what voltage increases did you have to apply for stability.

 

Most importantly! does your computer work without crashing? if so go and enjoy it and stop worrying about being better than the next guy.

 

If you view the thread I gave you you will see how using different controllable fans will improve your lot in life.

 

David

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Thanks for the info djmorgan, I haven't a clue what the ambient temperature is, probably between 16 and 22 degrees C I would guess. The thread you linked too only has one post in it by the way.

 

My main concern is whether it is safe to connect the fans to my fan control or not, I would then experiment with different settings.

 

At the moment my Vcore is 1.375, but i may be able to bring that down...

 

I am fairly new to all this OC/water cooling lark so thanks for the patience...

 

UPDATE:

I have found out that the fan Controller in the CM Sniper case only puts out 10.8V maximum for the fans, what effect would this have? Slower speed I presume? If so how much slower would we be looking at?

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Ok then, I took the plunge and connected the two H70 fans to the Fan controller of my CM Storm Sniper case. The results are very positive indeed, and interesting. To test out the Load temps I ran Prime95, and set the fan speed to a % based on the dial position. The temps are in the form of coolest core - hottest core:

 

Old TRUE-120 (1600rpm Push/Pull)

IDLE: 38° - 41°

LOAD: 79° - 84°

 

H70 (fans set to intake)

Fans connected to CPU Fan Header

IDLE: 32° - 41°

LOAD: 69° - 73°

 

Fans connected to cases fan controller

Minimum (20% ish I think)

IDLE: 36° - 40°

LOAD: 76° - 80°

 

50%

IDLE: 34° - 39°

LOAD: 69° - 74°

 

100%

IDLE: 33° - 39°

LOAD: 68° - 72°

 

Volume

I don't have any Db meter or anything so this is subjective but anyway:

 

TRUE-120: LOUD rushing noise, annoying when room is quite.

H70: CPU Fan power: LOUD rushing noise and irritating whine, annoying even when room noisy.

H70 20% Fan speed: Very Quiet! Gentle shush, fine even when room quite.

H70 50% Fan speed: Average, fan noise not annoying but there in background all the time.

H70 100% Fan speed: LOUD rushing noise and irritating whine, annoying even when room noisy.

 

So all in all a very good outcome, and even with the fans turned down to minimum the H70 still beats my old TRUE-120, so I am a happy chappy.

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