none as such....
i want to optimise the cooling in my case with the fans i have in order to facilitate cooler cpu for better overclock etc; knowing which fan does what and how else to arrange the others all helps in the learning process
OK...
In general, cool air in from bottom front, hot air out top rear. Have the fans orientated that way. Most often, intake fans are not needed. Exhaust fan(s) remove air from the case and it has to be replaced. Intake will take care of itself.
The problem with the ATX design is it has no dedicated heat paths. The case is just one big box with heat circulating round and round. People often add WAY too much cooling by adding a bunch of fans which moves more air than needed and just adds to the noise problem. The BTX design will have a thermal zone for the CPU that will intake air from the front of the case, pass it over the CPU and send it out the back instead of just blowing it around the case.
I run a very quiet rig by doing things a little differently. No need or tons of noisy fans. For my CPU, I use an 80mm Panaflo M1A which runs ~ 2400 RPM @ full speed, 28 dB. The speed of that fan is automatically varied based on CPU temp using a utility called Speedfan During low load/temps, the fan runs @ 60% RPM. When the CPU/load goes up, speed increases.
Instead of using the hot air from the case, I use a duct than runs from the CPU to the front lower intake of my case. This provides cool outside air for the CPU and doubles as and intake fan. CPU ducting kit. The Power supply above the CPU (Antec True330) which also uses variable speed fans and a Panaflo L1A case fan (1900 RPM 21 dB) @ full speed exhausts the hot air from the CPU. The L1A is also controlled by Speedfan. It runs 60% RPM until temps rise, then it goes to full RPM.
For video card cooling, I use an Arctic Cooling Silencer. Again, instead of circulating hot air around, it exhausts GPU heat directly out of the case. It cools better and is quieter than stock and also doubles as an exhaust fan.
With some thought, you can have a very cool running, stable, and very quiet system, and it doesn't cost a ton of $$ either. This setup cools an overclocked system of a P4 2.6C @ 3.34 Ghz and a Radeon 9800 Pro.
In general, cool air in from bottom front, hot air out top rear. Have the fans orientated that way. Most often, intake fans are not needed. Exhaust fan(s) remove air from the case and it has to be replaced. Intake will take care of itself.
The problem with the ATX design is it has no dedicated heat paths. The case is just one big box with heat circulating round and round. People often add WAY too much cooling by adding a bunch of fans which moves more air than needed and just adds to the noise problem. The BTX design will have a thermal zone for the CPU that will intake air from the front of the case, pass it over the CPU and send it out the back instead of just blowing it around the case.
I run a very quiet rig by doing things a little differently. No need or tons of noisy fans. For my CPU, I use an 80mm Panaflo M1A which runs ~ 2400 RPM @ full speed, 28 dB. The speed of that fan is automatically varied based on CPU temp using a utility called Speedfan During low load/temps, the fan runs @ 60% RPM. When the CPU/load goes up, speed increases.
Instead of using the hot air from the case, I use a duct than runs from the CPU to the front lower intake of my case. This provides cool outside air for the CPU and doubles as and intake fan. CPU ducting kit. The Power supply above the CPU (Antec True330) which also uses variable speed fans and a Panaflo L1A case fan (1900 RPM 21 dB) @ full speed exhausts the hot air from the CPU. The L1A is also controlled by Speedfan. It runs 60% RPM until temps rise, then it goes to full RPM.
For video card cooling, I use an Arctic Cooling Silencer. Again, instead of circulating hot air around, it exhausts GPU heat directly out of the case. It cools better and is quieter than stock and also doubles as an exhaust fan.
With some thought, you can have a very cool running, stable, and very quiet system, and it doesn't cost a ton of $$ either. This setup cools an overclocked system of a P4 2.6C @ 3.34 Ghz and a Radeon 9800 Pro.
nice, thanks.
to be honest this mathching intake/outake business always left me confused - cases arent sealed environments and so more exhausts creating a negative pressure would surely draw air in anyway.
i just assumed i was missing something when so many ppl said the same thing - not that it still made sense to me!
to be honest this mathching intake/outake business always left me confused - cases arent sealed environments and so more exhausts creating a negative pressure would surely draw air in anyway.
i just assumed i was missing something when so many ppl said the same thing - not that it still made sense to me!
yeah...guess i'm showing my age in these forums now...young upstarts: what do they know about simple physics
on a slightly more serious note: which would you recommend: leaving my top blow-hole fan where it is, or also moving it to the back of the case - i figure in this latter configuration i would have some sort of linear airflow with it all coming in from the front and that side intake, passing across the m/b, components, hsf etc and venting out the back via psu fan, 2xcase fans and exhaust blower......rather than some being "diverted" up??
on a slightly more serious note: which would you recommend: leaving my top blow-hole fan where it is, or also moving it to the back of the case - i figure in this latter configuration i would have some sort of linear airflow with it all coming in from the front and that side intake, passing across the m/b, components, hsf etc and venting out the back via psu fan, 2xcase fans and exhaust blower......rather than some being "diverted" up??
Id have to see your setup. Generally, there is a PS fan (or PS vent at least), directly over your CPU. It depends on the PS design. The rear case fan often sits pretty much on the same horizontal s the CPU, but again, it depends on the case. I run the rear case fan blowing out. Between it and the PS above it, they remove the CPU heat from the case fairly well. Every setup is different. Try it and see. You can leave the top "blow hole" as a vent.
I see the VAST majority of people who build their own enthusiast PC use way too many fans. They are really not needed. Looking at your system specs, I dont see anything that warrants more than just a single exhaust fan.
I see the VAST majority of people who build their own enthusiast PC use way too many fans. They are really not needed. Looking at your system specs, I dont see anything that warrants more than just a single exhaust fan.
psu [enermax] and back case fan as you describe
the most significant input to temp change was actually the side intake fan; by default it was a vent but i turned it round.
i do take your point about too many fans and in truth i was a little disappointed about how little they aided cooling but all in all they brought my idle temp down from 51 to 44C [it was 40C 3 days ago when i applied some as5 i got hold off but now stuck at 44c :frown:
unless a friend can persuade me to part company with 1 i will keep the 2 case fans; i might switch the top to a front intake when i have more time to play just to see if it does anything as frankly it seems to contribute little where it is [other than mild "whooshing"]
thanks for the extended chin-wag on the topic
the most significant input to temp change was actually the side intake fan; by default it was a vent but i turned it round.
i do take your point about too many fans and in truth i was a little disappointed about how little they aided cooling but all in all they brought my idle temp down from 51 to 44C [it was 40C 3 days ago when i applied some as5 i got hold off but now stuck at 44c :frown:
unless a friend can persuade me to part company with 1 i will keep the 2 case fans; i might switch the top to a front intake when i have more time to play just to see if it does anything as frankly it seems to contribute little where it is [other than mild "whooshing"]
thanks for the extended chin-wag on the topic
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