Search found 13 matches

by bowzee
Fri Feb 22, 2008 8:57 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi dhanson865, Again, thank you for your replies. Hey, I never said that SPCR never tests high CFM fans, I was merely asking if anyone knew about this issue! Please read my first post above. I do not believe that the companies lie, I really am more inclined to think that they have testing procedures...
by bowzee
Fri Feb 22, 2008 3:59 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi dhanson865, Thanks for your replies, I was not aware about the test made by SPCR with the ACT-RX fan, thank you for the information. I do not see why you think that I am wrong, if you read what I wrote above you will see that there are significant differences between the three high cfm fans that ...
by bowzee
Fri Feb 22, 2008 3:20 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi MikeC, Thanks for your reply, I really have no means of running a test with my disks unplugged because I use SpeedFan to regulate the speeds. I do appreciate your the fact that you tested these and concluded that they are not good for insulating or absorbing the noise. I really do not have much o...
by bowzee
Thu Feb 21, 2008 7:38 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi Blacktales and xan_user, Sorry if I misunderstood what you expressed. I was trying to separate rotational or hum-type noise (which has peaks in the frequency domain) from airflow noise (which should be white-like, no peaks). It is my observation that, for large cfms, the hum is more significant t...
by bowzee
Thu Feb 21, 2008 6:49 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hey xan_user, Thanks for your reply, About replacing the fan, well that was my suggestion, as per the title of the topic. It turns out that SPCR does not have any reviews on 80cfm fans. I used an 88cfm Scythe fan, because jaganath suggested this above. About the rotation noise being louder than the ...
by bowzee
Thu Feb 21, 2008 6:39 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hey MikeC, Thanks for your reply, The issue that I am having, IMHO, is caused by an interference between the power supply fan and the CPU fan, which are about 3cm (an inch or so) apart from each other (turbulence?). This interference causes the power supply fan to work with less efficiency. When I c...
by bowzee
Thu Feb 21, 2008 4:15 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi, Here is an update. I followed the suggestion of getting a Scythe Slipstream fan, the model is SY1225SL12H, 88cfm, 33dBA (I had to import it) and I replaced the Thermaltake TT-1225A, 78 cfm, 21 dBA, that I had in the power supply. So now this is what happens: 1) The Scythe fan is considerably mor...
by bowzee
Mon Feb 11, 2008 5:36 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi MikeC and Blacktales, Thanks, for your replies. I seem to have managed to reduce the noise by improving what was probably turbulence. All that I did was unblock a small vent-hole in the case adjacent to the power supply and increase the rotation of my CPU fan to 60% (1500 RPM) instead of 30% (750...
by bowzee
Mon Feb 11, 2008 3:06 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hey jaganath,

Thanks for your reply.

I agree with you but I don't have the guts to try that. Sometimes this computer will run unattended for weeks, so it has to to meet all possible safety concerns. It only takes one incident to cause a lot of damage...

bowzee
by bowzee
Mon Feb 11, 2008 2:55 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi Blacktales, Again, thank you for your reply. I found this spec. sheet for the Seventeam ST-550P-AG : http://static.scribd.com/docs/708364l1w8ek7.swf?INITIAL_VIEW=width I believe that the comment you made regarding turbulence issues will be very helpful. This might be the reason for the rotational...
by bowzee
Mon Feb 11, 2008 12:20 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hey seraphyn,

Thanks for your reply.

I am going to look at the sites that you suggested. I doubt that I will find reviews there in any way methodologically similar to the ones made by SPCR (because I "Googled" this quite a bit). It really would be nice if SPCR did this.

bowzee
by bowzee
Mon Feb 11, 2008 12:10 pm
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Hi Blacktales, Thank you for your reply. My power supply is a Seventeam ST-550P-AG, which has an automatic rotation control of some sort. The noise that I hear coming from it sounds like a hum with a given frequency plus some secondary (probably airflow) noise. Depending on what I do with the other ...
by bowzee
Mon Feb 11, 2008 10:20 am
Forum: Site Feedback
Topic: Request: Review for 120mm fans, ~80cfm and over
Replies: 26
Views: 19220

Request: Review for 120mm fans, ~80cfm and over

Hi, I was wondering if there is any review/roundup on 120mm fans with airflows of ~80 cfm or more. The reason for which I find this important is that with my computer all the noise I can hear is being generated by the ~80 cfm in the power supply. The noise coming from the other 4 fans is negligible:...