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DEMCiflex filters question - Page 3

post #21 of 40
Thread Starter 
Quote:
Originally Posted by Celoth;15480986 
I rigged up a test in the case anyway, and yeah... on both the megaflow and the Corsair 200mm front fan the airflow is killed by roughly half. frown.gif It's not even remotely close to the advertised 15%. Hell I'd have settled for 25%, but half? No way. I've sent them an email to see what can be done.

well i wouldve never kept my hopes up for slow-rpm 200mm fans..

lemme know what their answer is smile.gif
post #22 of 40
Quote:
Originally Posted by templar View Post
well i wouldve never kept my hopes up for slow-rpm 200mm fans..

lemme know what their answer is
Got this:

Quote:
We have tested the filtering mesh with flow and pressure meters and have to disagree on your “50% or more†claim. Our tests have shown a reduction in flow between 15 and 25% depending on the fan type that gets used with the filter. These filters gets used successfully globally.

If the performance of this product does not satisfy you, you may send it back to us and we will be happy to refund you in full.
Of course shipping costs from here to South Africa is gonna cost me the same amount I get in a refund...

Well, before I ditch them completely, I need to test them on the 120mm Noiseblockers, and I want to see my actual temps as well once the system is up and running.
post #23 of 40
Thread Starter 
Quote:
Originally Posted by Celoth View Post
Got this:



Of course shipping costs from here to South Africa is gonna cost me the same amount I get in a refund...

Well, before I ditch them completely, I need to test them on the 120mm Noiseblockers, and I want to see my actual temps as well once the system is up and running.
that's very decent of them..

again, i never considered using them on 200mm fans. will be using it with 4 120mm TBs.
also, and i'm no expert but this just make sense, keep in mind that even if you lose 50% of the airflow, BUT still manage to maintain positive pressure within your case (i.e. even with 50% reduced intake>exhaust), then you will still get great thermal results, since the positive pressure will compensate for this, while still keeping you dust-free
post #24 of 40
I said they suck... (not literally). I contacted them to check if there was any defect in my filter (too dense?) and they never wrote me back.
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post #25 of 40
Ok a friend of mine installed the demciflex filters in his Haf 912, and his temps barely changed under load, so perhaps I was a bit hasty in claiming 50% reduction. It feels like a lot, but perhaps human perception when it comes to airflow is very different than what an actual flowmeter reads.

He has the megaflow 200 as well and stock fans.

I guess I'll find out when I get the rest of my parts.
Edited by Celoth - 10/28/11 at 5:02pm
post #26 of 40
Any update? Looking to get these for my CM 690.
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post #27 of 40
They definitely cut the airflow some, so if temps are barely ok now, it might not be a good idea. On my system they work out fine it seems, and the airflow is still good enough for decent temps. Can check my worklog in signature for more details.

On the upside, they stop dust really well (have to clean them every week probably, but that's really easy and quick), so the dust build-up inside the case should be negligible even over a long time, if you have a positive pressure setup. With negative pressure I wouldn't bother using these filters.
post #28 of 40
I have 4 intake fans, so it should probably help. I get dust like crazy with my setup now.

All four are Noctua fans, they should still perform well with the filters, right?
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post #29 of 40
Thread Starter 
Quote:
Originally Posted by Recipe7 View Post

I have 4 intake fans, so it should probably help. I get dust like crazy with my setup now.
All four are Noctua fans, they should still perform well with the filters, right?

it's all about the CFM for filters.. i have the Enermax TB.Silence 120mm. 4 of them on sidepanel with the demciflex filter.
they still cool my system very well in spite of the SLI setup.

you could go ahead and compare your noctuas' specs to mine and get a better idea of whether they'll work well or not - http://www.enermax.com/home.php?fn=eng/product_a1_1_2&lv0=4&lv1=32&no=146
post #30 of 40
At 1300 rpms, it seems the two are nearly identical; in a given situation, yours would win out due to higher rpms.

I'll still consider these, but not hitting the buy button yet.
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Jesktop
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