croddie wrote:I don't understand why speedfan doesn't install itself as a service.

"as a service"? If that means it is alway running, then, for example, RMClock can never be run because the two are incompatible (they want to grab the same paths). I would not want that.

valnar wrote:Any reason not to buy one?

Yes. Don't buy one to cool a hot 4-core CPU. Seriously.

If you want an HSF for a low-power nongaming nonvideo decoding PC, it's still a terrific product. The machine I'm typing on at the moment, my #1 machine, uses one.

What diameter is the propeller? Some fans push air out in a cone, and some have a more cylindrical (or at least a narrower cone); so this might affect the results, if it is not large enough to "catch" all the air... The sensor propeller is a 5.82" (called 6"), cut down to 80mm. This provides a heav...

Ah -- the sensor is the propeller , and when it's RPM's are 824 (or whatever), that's when you take the fan speed. The name "sensor" was confusing, because it makes it sound like it was part of the fan... Yes, the propeller is the "airflow sensor". If two (or more) fans have the same sensor RPM, th...

Since the sensor RPMs are all the same (that's the "equal airflow"), the other RPMs are the fan RPMs. Note that different fans require different RPMs to achieve the airflow - the one with the lowest fan RPM is the one that has the highest fan pitch, etc. The voltage is the fan voltage required to ru...

Looking at this 4-pin Nexus fan... problem is I don't like the RPM range. The Arctic Cooling AF8085PWM sells for $5US, and has native RPM of 600-2000. Reducing the voltage of a PWM fan while retaining PWM is tricky; I posted on that subject back when the A-C PWMs first came out. A small change in v...

I think I'm gonna go for the Hitachi DeskStar 7K160 - hard drive - 160 GB - SATA-300 . Please let me know if you have any experience with this drive. ;) I've been using the 7K160 since they first came out, and they have worked well for me. They have good performance, typical of that (now older) gen...

Anyone have any testing on this or plan to do ? It seems like an intressting piece :) I you had Googled "OCZ Vendetta 2 review" you would have found, as the first hit, a review of the V2. And as it happens, the TRUE is one of the three coolers used for comparison. However, the review did not even m...

I've tried the Enermax Enlobal fan, and it is very quiet. The caveat is that the one I have vibrates quite a bit, so mounting it might be an issue. I measured the Enlobal Marathon 80mm fan today (see User Reviews), and it was indeed very quiet. My sample had no noticeable vibration, so this is appa...

Sunbeam Silent Core Fan 1500RPM 21.5CFM SilenX New Version (high pitch) Scythe Kama Flex 2000RPM 27CFM Enermax Marathon 1500RPM 24CFM Ambient noise 29.5dBA (daytime), 3" microphone distance (geometrically same as 120mm fan at 4.5"), sensor RPM 824RPM for all fans. Sunbeam 11.89V 1594RPM 39.6dBA Mara...

After many months, the 120mm version is apparently being sold at some select foreign locations. I have the 80mm version; it's a very good fan. The Sunbeam link in the first posting in this thread is still active.

Jab-Tech carries the Nexus 92mm Silent, but they also carry the Scythe Kama Flex in low and medium speed versions. According to my tests, the Kama Flex is better. It's also cheaper.

Free-field mikes are what you want; interesting as that's what anandtech use and they claim a 15dB(A) noise floor: http://www.anandtech.com/casecoolingpsus/showdoc.aspx?i=3021&p=7 Googling "microtech gefell" reveals they make studio microphones and amplifiers, not sound level meters. Anandtech buil...

To add to the list of SLMs with low A-wtd noise levels: The Larson Davis models 812 and 820 have a noise base of 17.5dBA. The Casella CEL 430.A1 has a noise level of 16.5dBA. All are Type 1 SLMs and not cheap. All use 1/2" free-field microphones with 200V polarization. At the moment the dollar value...

andyb wrote:Someone on here turned a 120mm fan into a blower.

Bluefront. I think maybe he called it a "slot fan"??

Directron carries both an AMD and a 775 version, not expensive. The Denmark review cited above was written before the production unit appeared. Dunno what countries have the product available besides us Yanks.

Neil Blanchard has posted several times that the 800RPM model is the sweet spot for Slipstreams. I decided to check up on him. First, about equal airflow: all five Slipstreams share the same injection-molded hub/blade assembly. If they're rotating at the same RPM, then they're pushing the same air. ...

This Sunbeam HSF is also offered by Xigmatek under the "Prima" name. Its mounting has been changed to allow the cooler to blow air into the exhaust fan rather than the PSU. It's been frustrating to me to see all those really good HSFs that work only on Intel mobos because blowing hot air into the P...

As far as that "low pressure" thing is concerned......your testing is done in free air, without any restrictions to airflow. I suppose this is the normal way fans are tested, and cfm specs published. (marketing tweaking aside). Correct. Normal fan testing, including in my equal-airflow fixtures, is...

Some more data on these two fans: The Magma starts, using a Sunbeam Rheostat, at 4V (720RPM) and runs at 2V (352RPM). The Sunbeam uses "Darlington Emitter Followers" which means the voltage drops as the current increases, so that's a very conservative starting voltage if you're using a stiffer sourc...

JaYp146 , Do you know if this is an analog fan controller. I think the Mosfet right behind the knobs should get hot if it is. There's only one resistor on the controller board per channel, so hard to tell by the pic. This is a high frequency PWM, whose minimum setting is 50%. I have one. Tried to m...

What I'm reading here.....The SS turns your sensor 856rpms @1262rpms. The Magma needs to turn 1565rpms to produce the same airflow? ......And at that rpm is 4.5dBA louder? If that's the case, I cannot see any advantage to the Magma at all. The Magma needs more RPM because it's a lower pitch fan. Lo...

The Magma I have (and opened first, I have another) is a "hot" unit, turning 1657RPM at 12.00V here in KF's thinnish air. So, I used the slower unit - the Slipstream1200 - as the reference, as usual. About the sensor prop: I cropped another, new, 5.82" prop down to 120mm for use as the sensor. My re...

Here are 4ea brand-new, yet unpackaged fans for testing, and the tool needed to open the Enermax Cluster package: http://img155.imageshack.us/img155/4903/pwm1ir9.th.jpg The fans are the A-C PWM 1500RPM, the Scythe PWM 1200RPM, the Enermax Cluster PWM fan at 1200RPM, and the 1200RPM Slipstream 3-pin ...

In my opinion, the Scythe Slipstream 800RPM is the best fan right now. The 500RPM is the quietest at 12v (no surprise, really). I find it strange that you say that, because the Scythe S-FLEX 800RPM (8.7dBA) is quieter than the Scythe Slipstream 800RPM (10.70dBA). If you measure at equal RPM, you're...

Well damn....I've been waiting for these new fans to show up. Looks like a big disappointment. Those Scythe Slip-Stream fans are going to be hard to beat. Thanks for all the testing.......maybe you can get some of those -db SilenX 120s and run them against the Slip-Stream. :D Thinking of you, Bluef...

looks like a resounding victory for the Slipstream, albeit based on initial results. I agree. It also looks as if the 800RPM model is quieter than the 500 at equal airflow - something I'm gonna have to test. I've got lotsa testing lined up - I now have (still in their boxes) unused samples of the E...

Access denied wrote:next time check what they say before u say somesthing:
http://www.nexustek.nl/NXS-120mm-pwm-fa ... -quiet.htm

Information is a good thing to have. Do you know on what date that data was posted by Nexus?

Also, noise at different frequencies does not mask as well as noise at the same frequency. Thus, two fans will only be minimally louder, but a fan and a HDD at the same dB level but different frequencies will be much more noticeable. "Coctail party effect": you can track, and understand, a conversa...

Units tested were an old Enermax Marathon (1 of 3 samples I have), a new Enermax Magma (1 of 2), and a new Scythe Slipstream 800 (1 of 2). The ambient noise was 27.9dBA. I selected 3" microphone distance because the Marathon was at 35.8dBA and I wanted as much distance as practical. Bad choice, the ...