can anyone explain how xfx r9 290 cooler work

[Azfar Siddiqui]

May be a very stupid question, but i cant figure out if xfx r9 290 cooler exhaust air from bottom of the card or exhaust it outside the case and intake air from bottom of the card?

 

[uglyduckling81]

Are you talking about this card?
http://xfxforce.com/en-us/products/amd-radeon-r9-series/amd-radeon-r9-290-core-edition-r9-290a-enfc
This is an exhaust type cooler. So it expels out the back of the case.

 

[Azfar Siddiqui]

Are you talking about this card?
http://xfxforce.com/en-us/products/amd-radeon-r9-series/amd-radeon-r9-290-core-edition-r9-290a-enfc
This is an exhaust type cooler. So it expels out the back of the case.

No im talking about the non reference one. The double disappiation(Sp.?)

 

[uglyduckling81]

That expels air in all directions. It has a small vent on the back but it's not a directed flow. It has an opening along it's entire length. It will dump most of it's heat into the case.

 

[Azfar Siddiqui]

That expels air in all directions. It has a small vent on the back but it's not a directed flow. It has an opening along it's entire length. It will dump most of it's heat into the case.

i see that clears out confusion. So im trying to lower my GPU temps since its overclocked and its getting warm in here, would a pci slot cooler card throwing air towards GPU help lower temperature in your idea?

 

[uglyduckling81]

That expels air in all directions. It has a small vent on the back but it's not a directed flow. It has an opening along it's entire length. It will dump most of it's heat into the case.

i see that clears out confusion. So im trying to lower my GPU temps since its overclocked and its getting warm in here, would a pci slot cooler card throwing air towards GPU help lower temperature in your idea?

If you want to lower temps inside your case which will lower temps of all your components you need to have fans extracting air out the back of the case. Fans work most efficiently when they a paired so have one fan pulling air in from the front and one fan extracting. This creates a good cross flow through your case.

 

[Justin Piencikowski]

i would just look to get better air flow in and out of the case. maybe better case fans or just more if your case supports them.

 

[Azfar Siddiqui]

i have 120 mm fan on side

http://www.newegg.ca/Product/Product.aspx?Item=N82E16835103060

i was thinking to replace that fan with this one

http://www.newegg.ca/Product/Product.aspx?Item=N82E16835608048&_ga=1.168788577.1940281290.1428215147

Would i notice any noticeable temperature improvements in my GPU or its useless.

 

[uglyduckling81]

A better fan can help if it can push more air, measure in CFM. I'm not knowledgeable enough on all types of fans to know which one is better and by how much.
The main thing with PC cooling is to have air intake and roughly the same amount of fans exhaust.
I'll explain why but I'll keep it simple since that's the only understanding I have of the matter.
If I have one fan pushing air into a case (lets call it 1 unit of air per minute) then it is either going to increase the pressure in the case by 1 or 1 unit is going to be pushed out an exhaust port. That means that 1 fan not only has to use its energy to draw 1 unit of air in it also has to push one unit of air out. It's performing 2 job so it can only do each at half efficiency. It will also lose some efficiency because it is having to do 2 functions, also some other reasons like not being directly placed over the exhaust port, back pressure etc. So it might only be achieving 70% total efficiency due to losses (Random number plucked out of thin air)
If I now add one equal fan pushing air out of the case it frees the intake fan up to just draw air into the case. Both fans are moving 1 unit of air each, 1 in and 1 out. Both are more efficient due to less work load and less total loss.
Because of the way these efficiencies work you always want to try and have an equal push pull situation, There is no point in having 10 fans shoving air into a closed case and 1 exhausting. The internal pressure would build up and back pressure on all the fans would cause inefficiencies.
Based on this concept the best thing you can do is to have as many fans as your case allows with a equal amount on intake and exhaust duty.
Changing a fan on the side with one that can push more CFM could help because it is directing more of the air directly over the troubled components but it would still be best to ensure you have a properly configured fan setup before replacing already existing fans for small gains.
edit: I should add that due to a PC case not being 100% air tight this doesn't need to be 100% equal. There will be lots of places for excess pressure to exhaust or be drawn in if there is a slight negative pressure effect. It's all adds to the inefficiencies though.

 

[Azfar Siddiqui]

A better fan can help if it can push more air, measure in CFM. I'm not knowledgeable enough on all types of fans to know which one is better and by how much.
The main thing with PC cooling is to have air intake and roughly the same amount of fans exhaust.
I'll explain why but I'll keep it simple since that's the only understanding I have of the matter.
If I have one fan pushing air into a case (lets call it 1 unit of air per minute) then it is either going to increase the pressure in the case by 1 or 1 unit is going to be pushed out an exhaust port. That means that 1 fan not only has to use its energy to draw 1 unit of air in it also has to push one unit of air out. It's performing 2 job so it can only do each at half efficiency. It will also lose some efficiency because it is having to do 2 functions, also some other reasons like not being directly placed over the exhaust port, back pressure etc. So it might only be achieving 70% total efficiency due to losses (Random number plucked out of thin air)
If I now add one equal fan pushing air out of the case it frees the intake fan up to just draw air into the case. Both fans are moving 1 unit of air each, 1 in and 1 out. Both are more efficient due to less work load and less total loss.
Because of the way these efficiencies work you always want to try and have an equal push pull situation, There is no point in having 10 fans shoving air into a closed case and 1 exhausting. The internal pressure would build up and back pressure on all the fans would cause inefficiencies.
Based on this concept the best thing you can do is to have as many fans as your case allows with a equal amount on intake and exhaust duty.
Changing a fan on the side with one that can push more CFM could help because it is directing more of the air directly over the troubled components but it would still be best to ensure you have a properly configured fan setup before replacing already existing fans for small gains.
edit: I should add that due to a PC case not being 100% air tight this doesn't need to be 100% equal. There will be lots of places for excess pressure to exhaust or be drawn in if there is a slight negative pressure effect. It's all adds to the inefficiencies though.

Very well explanation sir. I really appreciate amount of effort and time you put in to type so much information. It was helpful indeed. But i have heard neutral air pressure causes dead spots. what you have to say about that

 

[uglyduckling81]

That is actually something in my job we are taught when recommending placement of smoke detectors.
It basically says don't place smoke detectors in dead corners of a room because air pockets can cause a later detection of smoke and therefore fire in a room.
That's talking about in the upper corner of a room with no air flow though. A PC case is more like a wind tunnel having several fans working on intake and extraction. Whilst it would be true some areas of a case could have less air movement I doubt such an environment could have a total dead spot.
Also you don't really mind if the top left corners air is slightly warmer because it doesn't have a fan blowing right on it. The GPU, CPU both have their own fan to stir up the air around them which are the two main heating zones that require the cool air. The effects of convection are also at play causing heat to rise and cool air from below to replace it (unless you don't have exhaust fans removing the hot air and the entire case is hot).
Oh and because a PC case isn't very air tight generally air will either be escaping or being drawn in from all over the place depending on whether the inside of the case is a positive or negative pressure environment.
Have you ever looked at an old case which hasn't been cleaned in a while? Dust will be built up around every crack not just the fans intake and exhaust ports.
So I wouldn't be too worried about air flow dead spots within a properly ventilated case.

 

[Azfar Siddiqui]

That is actually something in my job we are taught when recommending placement of smoke detectors.
It basically says don't place smoke detectors in dead corners of a room because air pockets can cause a later detection of smoke and therefore fire in a room.
That's talking about in the upper corner of a room with no air flow though. A PC case is more like a wind tunnel having several fans working on intake and extraction. Whilst it would be true some areas of a case could have less air movement I doubt such an environment could have a total dead spot.
Also you don't really mind if the top left corners air is slightly warmer because it doesn't have a fan blowing right on it. The GPU, CPU both have their own fan to stir up the air around them which are the two main heating zones that require the cool air. The effects of convection are also at play causing heat to rise and cool air from below to replace it (unless you don't have exhaust fans removing the hot air and the entire case is hot).
Oh and because a PC case isn't very air tight generally air will either be escaping or being drawn in from all over the place depending on whether the inside of the case is a positive or negative pressure environment.
Have you ever looked at an old case which hasn't been cleaned in a while? Dust will be built up around every crack not just the fans intake and exhaust ports.
So I wouldn't be too worried about air flow dead spots within a properly ventilated case.

u sir have alot of information. Thanks for sharing .