cpu cooler gets loud under prime95 test

[soheil253]

my cooler master seidon 120mm under prime95 reaches 2100rpm and gets pretty loud. is this normal? im using the stock fan that came with it. is 2000 rpm loud for any 120mm fan?

 

[Buzz247]

What you're describing is a PWM controlled fan increasing speed when your chip senses higher temp. Supposed to happen. High rpm doesn't mean loud. All depends on the fan design. But generally, more rpm = more air = more db (decibels or noise)

 

[inzone]

Fans come in a variety of speeds , fan design and noise, as a general rule the higher the fan spins the louder it can get. Some companies will have specialy designed fan blades to help cut down on the Dba but yes 2000 rpm can be a little loud but is to be expected.
The fan itself is removable and you can shop around for a better fan that can give you the CFM that you need but at a lower Db.

If you got the single fan model then the specs of the fan are 19 - 86 cfm and the Dba can be 19 to 40 so if your at top speed then your cranking 40 dba which is pretty loud.
You can get a PWM fan that has a high CFM , low Dba and high static air pressure, when dealing with radiators you want a fan that has a high static air pressure to blow through the radiator with good force.

Something like this would be a good choice;

http://www.newegg.com/Product/Product.aspx?Item=N82E16835608026

 

[soheil253]

Fans come in a variety of speeds , fan design and noise, as a general rule the higher the fan spins the louder it can get. Some companies will have specialy designed fan blades to help cut down on the Dba but yes 2000 rpm can be a little loud but is to be expected.
The fan itself is removable and you can shop around for a better fan that can give you the CFM that you need but at a lower Db.

If you got the single fan model then the specs of the fan are 19 - 86 cfm and the Dba can be 19 to 40 so if your at top speed then your cranking 40 dba which is pretty loud.
You can get a PWM fan that has a high CFM , low Dba and high static air pressure, when dealing with radiators you want a fan that has a high static air pressure to blow through the radiator with good force.

Something like this would be a good choice;

http://www.newegg.com/Product/Product.aspx?Item=N82E16835608026

great thanks! but i need something over 2000rpm though. my stock fan is 2500rpm max. the noctua 1500rpm is pretty low

 

[Buzz247]

Rpm doesn't matter as much as cfm - airflow. Some 2500rpm only move 65cfm and some 1800rpm move 70cfm.

If your dead set on high rpm regardless of cfm rating, Delta fans are the ultimate beasts. 2000+rpm up to 100-120cfm, but 40-45db too lol.

Phobya Gsilent 2000rpm are about 31db and 63cfm

 

[Buzz247]

What we are trying to get across: choose a fan based on airflow -cfm

Crappy fans can spin really fast, be really loud and do nothing for air movement

Quality designed fans can spin slower be quieter, and still move more air than your stock fan does

 

[soheil253]

What we are trying to get across: choose a fan based on airflow -cfm

Crappy fans can spin really fast, be really loud and do nothing for air movement

Quality designed fans can spin slower be quieter, and still move more air than your stock fan does

oh i see. i have the cooler master seidon 120m. il think about changing the stock fan. thanks

 

[Buzz247]

Btw, that noctua fan is a FAR better fan than what you have. Moves 10cfm more air, 10db quieter.

 

[inzone]

You also may be able to add a second fan to that radiator and add to the cooling power , it's called the push / pull effect. Cooler Master actually makes a similar model like the one you have only it comes with two fans.
If your going to replace the current fan then there are three things to look for in the specifications of a fan.

1. CFM- the amount of air that it moves.
2. Dba- how much noise the fan makes, the lower the number the better.
3. Static air pressure- this is how much force the blades generate along with the CFM.

RPMs don't matter once you start looking at these things.

 

[soheil253]

You also may be able to add a second fan to that radiator and add to the cooling power , it's called the push / pull effect. Cooler Master actually makes a similar model like the one you have only it comes with two fans.
If your going to replace the current fan then there are three things to look for in the specifications of a fan.

1. CFM- the amount of air that it moves.
2. Dba- how much noise the fan makes, the lower the number the better.
3. Static air pressure- this is how much force the blades generate along with the CFM.

RPMs don't matter once you start looking at these things.

adding a second higher quality fan sounds like a good idea! i would just screw it in to my existing fan? ( sandwiched)

 

[inzone]

One fan on each side of the radiator. Fan , radiator , fan.

 

[soheil253]

One fan on each side of the radiator. Fan , radiator , fan.

i cant do radiator, fan,fan?

 

[inzone]

No. If you have attached the Siedon to the rear of the case all you would have to do is mount the fan outside the case or mount the whole thing inside , but to get the push/pull affect you have to sandwich the radiator in between the two fans.

 

[soheil253]

No. If you have attached the Siedon to the rear of the case all you would have to do is mount the fan outside the case or mount the whole thing inside , but to get the push/pull affect you have to sandwich the radiator in between the two fans.

oh okayy. by the way i looked again at the instructions and am3 boards dont need to use the standoffs but the intel ones do for mounting the water block on the cpu. why is that so?

 

[inzone]

That I can't say because I have not used that device, but if they are in the instructions then there is a reason.

 

[soheil253]

That I can't say because I have not used that device, but if they are in the instructions then there is a reason.

i looked into it and am3 installations didnt use it but anyway is the fan,radiator,fan worth it? like will i get way better temps? or a bit?

 

[Buzz247]

Compared to what? Stock cooler? Yes. High end air cooler? About same. Custom liquid loop starting at 300usd? No

 

[inzone]

I can't say what the improvement will be but there will be an improvement by adding a second fan. Right now adding that second fan is the cheapest way to get better temps, if you want to improve further then you would have to get the next higher performing model , the 240mm sized radiator which you can find from a couple of brands (Corsair , NZXT , Silverstone, Thermaltake) and you can do the same thing with that one since it comes with two fans , you can add another two fans on the opposite side to improve the cooling further.