Case Fans Help Help

[Dracoola]

Hurro,

How do you find out the RPM of case fans? In both cases where;

1 – Case Fan is connected directly to power supply.

2 – Case Fan is connected to /through the motherboard.

I have different speed fans with me that I need to check. I mean by the air pressure and noise I can tell which one's faster, but I need to know exactly HOW much RPM.

There are NO markings/stickers on the fans, no information.

Moreover, what’s the RPM of the standard 120 mm fans that come fitted in CM 690, [1st Gen]

Thank you

 

[hmir]

Hurro,

How do you find out the RPM of case fans? In both cases where;

1 – Case Fan is connected directly to power supply.

2 – Case Fan is connected to /through the motherboard.

I have different speed fans with me that I need to check. I mean by the air pressure and noise I can tell which one's faster, but I need to know exactly HOW much RPM.

There are NO markings/stickers on the fans, no information.

Moreover, what’s the RPM of the standard 120 mm fans that come fitted in CM 690, [1st Gen]

Thank you

Looking at the specs of the current CM 690, I see: 120 x 25 mm / 1200 RPM / 21 dBA. I have bought two CM cases (both cheaper and more expensive models) in the last two years, and they have exactly the same shitty stock fans as above. Therefore, I am inclined to believe that the first iteration 690 had the same fans as well.

1 - For fans connected straight to the molex connector from a PSU, they will run at maximum speed. So, if the above specs are true for your fans, then they will run at 1200 rpm.

2 - If they are connected to the fan header on your motherboard, you can use Speedfan or CPUID Hardware Monitor and other such programs to monitor the fan speed and set them to whichever speed you want.

I forgot to mention this, but CFM rating is what you should be looking at. A fan spinning at 2000rpm with a 50CFM rating isn't anywhere nearly as good as a fan spinning at 2000rpm with a 100CFM rating. RPM is the rotations per minute. CFM is the amount of air it pushes through.


---------- Post added at 06:31 PM ---------- Previous post was at 06:29 PM ----------

Is your PG handle a clever play on the words 'menstrual cycle'?

 

[Dracoola]

Looking at the specs of the current CM 690, I see: 120 x 25 mm / 1200 RPM / 21 dBA. I have bought two CM cases (both cheaper and more expensive models) in the last two years, and they have exactly the same shitty stock fans as above. Therefore, I am inclined to believe that the first iteration 690 had the same fans as well.

1 - For fans connected straight to the molex connector from a PSU, they will run at maximum speed. So, if the above specs are true for your fans, then they will run at 1200 rpm.

2 - If they are connected to the fan header on your motherboard, you can use Speedfan or CPUID Hardware Monitor and other such programs to monitor the fan speed and set them to whichever speed you want.

I forgot to mention this, but CFM rating is what you should be looking at. A fan spinning at 2000rpm with a 50CFM rating isn't anywhere nearly as good as a fan spinning at 2000rpm with a 100CFM rating. RPM is the rotations per minute. CFM is the amount of air it pushes through.


---------- Post added at 06:31 PM ---------- Previous post was at 06:29 PM ----------

Is your PG handle a clever play on the words 'menstrual cycle'?

Thank you very much for the detailed reply. Will try Cupid.

Still. I need to know the RPM/CFM of fans I have just lying around. Can I just hook them up to the motherboard and use Cupid to check their RPM?

Yea. 1200 RPM is not that good. Time to get 2000 RPM / 90CFM fans. The red LED Coolermaster Ones. Any other suggestions locally?

P.S. My PG handle is NOT a clever play on Shark Week

 

[hmir]

I have those CM 2000rpm/90CFM fans which I used to replace all of the stock CM fans in my 690 II Plus, and I've more than happy with them.

Yes, if the fans have a three pin connector, you can connect them to your motherboard fan header (2 at a time, assuming your motherboard has two fan headers - one for the front, and one for the rear of the chassis) and than use your choice of software to monitor what speed they are spinning at. Shutdown/disconnect power before doing that. Just thought I'd throw that in there.

 

[Dracoola]

I have those CM 2000rpm/90CFM fans which I used to replace all of the stock CM fans in my 690 II Plus, and I've more than happy with them.

Yes, if the fans have a three pin connector, you can connect them to your motherboard fan header (2 at a time, assuming your motherboard has two fan headers - one for the front, and one for the rear of the chassis) and than use your choice of software to monitor what speed they are spinning at. Shutdown/disconnect power before doing that. Just thought I'd throw that in there.

That settles it. Getting new fans and Cupid.

Thank you very much.