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For those familiar with the CMII 690 Adv

post #1 of 6
Thread Starter 
This isn't much of a mod really, but I'm starting slow.

So I recently picked up a CMII 690, very happy with it and its noise levels, the only thing right now is that with my setup, I have only a 140mm fan for air intake, while I have a 140mm on top pushing air out, and a 120mm in the back.

In addition I also have the Corsair A70 CPU cooler which is 2x 120mm push/pull fans that on an AMD system point directly upwards. Now currently that cooler sits directly underneath the 140mm on top, so I don't think there's much coupling of airflow, however I was considering where it might be best to move the top 140mm fan.

I can move adjacent to its current top positioning, clearing the space above the A70 to move air out, while also having the 140 pushing air out, but then the case seems like it would be very high negative pressure, possibly sucking all kinds of dust in the non-filtered side ports.

The other option is to drop the 140 down to the covered front panel, and have 2x 140s at the front, leaving only the CPU cooler to push air out the top. This seems like it might be superior dustwise, but I'm not sure if there will be enough airflow pushing air out?

So for this light foray into first mods, whacha guys think?
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Bleeding Edge
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post #2 of 6
Dont move the top fan, its job is to remove heat that rises (often from the video cards).

In general, position intake fans front and side of case, exhaust top and back. This produces airflow through the case. I also normally poition my CPU Cooler fans so they exhaust out the rear fan.

the strngth of the 690 II is that you can increase the airflow by adding more fans. thats the way I would go rather than moving the existing fans.
post #3 of 6
what kind of temps are you seeing now at stock setup? you can always add 2 intake fans at the bottom of the case between the psu and hdd cage or add 1 fan in the rom drive bays if youre only using 1 dvd drive.
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post #4 of 6
Thread Starter 
Honestly right now the temps are great, but it's hard to judge because it's super cold heh. So I was just thinking of what will be best to prepare for the upcoming months when it starts to warm up again.

But at the moment I'm getting about CPU @ 20-25 above ambient (using local weath as ambient) at full folding load, GPU @ 30-35 above ambient at full folding load, and bridge temps around the same as CPU. (idle roughly half of load temps above ambient).

Unfortunately I can't change the positioning of the CPU cooler, it's kinda of a whacky setup, and partly why I bought a new case heh.

I suppose during the warmer months if things start getting a little toasty for my tastes I can always add more fans like you suggest.
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post #5 of 6
Quote:
Originally Posted by ocpokey View Post
Honestly right now the temps are great, but it's hard to judge because it's super cold heh. So I was just thinking of what will be best to prepare for the upcoming months when it starts to warm up again.

But at the moment I'm getting about CPU @ 20-25 above ambient (using local weath as ambient) at full folding load, GPU @ 30-35 above ambient at full folding load, and bridge temps around the same as CPU. (idle roughly half of load temps above ambient).

Unfortunately I can't change the positioning of the CPU cooler, it's kinda of a whacky setup, and partly why I bought a new case heh.

I suppose during the warmer months if things start getting a little toasty for my tastes I can always add more fans like you suggest.
Its unfortunate that you can't position the A70 as exhaust out the rear fan position, that would yield better temperatures, especially as you could set you top 140mm to intake. In your current setup, the 140mm exhaust should be fine but I would add a 140mm side intake (preferably with filter)
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by BeDuckie View Post
Its unfortunate that you can't position the A70 as exhaust out the rear fan position, that would yield better temperatures, especially as you could set you top 140mm to intake. In your current setup, the 140mm exhaust should be fine but I would add a 140mm side intake (preferably with filter)
Yeah you're tellin me... wasn't actually expecting that, as all the reviews had shown the fan as a rear facing, but that was because every review had been done on an intel rig, and for some reason for AMDs they chose to make it top facing (still can't quite figure why).

Well hmmm, there are 2 top fan mounts, one over the rear, and one more in the middle, I could still slide the 140mm top fan to the middle area, and either use it as an additional exhaust or turn it in to the case like you suggested, or would that cause air turbulence having an intake and exhaust so close to each other?

I will probably have to pick up a nice little filter and a quiet 140 for the side to even out this flow at some point like you said, and if I upgrade my video it can't hurt at all now can it?
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