From personal experience having a very small amount of airflow is a huge cooling improvement over no airflow at all.
(Think of how cool a slight breeze can be on a hot day.)
A 12V fan running at 5V (1500-2000rpm) is virtually silent.
my favourite mods. Open the power supply and solder its fan onto 5V rather than 12V.
A good power supply will have good heatsinks so you can get away with this.
Cut two straight bits of a paper clip stick them into gnd and 5v on a spare floppy plug then stick your processor fan on the other end.
Some fans work at 5V some dont.
I have my intel fan running at 7V
if you still want the motherboard to monitor the fan speed you need to connect the pulse line from the fan to the motherboard. (yellow or green one)
Im running a 900mhz Celeron and a 1Ghz Athalon like this and they run fine at about 40 C while both encoding DVD to divx. On a hot day too (35 C)
I also ran a PII350 for 2 years without a fan. it ran at 60 to 70 C mostly. at 75 the mboard beeped at me (hot days) and usually meant i was playing too many games.
Began running it at 400mhz with the original fan slowed down to ~1500rpm 7V and it ran stable at 30C
Im a final year software systems eng student in Australia, at RMIT.
The majority of our course so far has been with windows.
Builder, Delphi, Vc++(yuk), Java(forte) etc.
At our uni the funding is crap. thanks johnnie.
I do most of my studying at home simply because the on campus computers are slow and there are never enough to go round.
As a student if you dont have your own computer at home and dont get hold of a pirated copy of the development software then you will most likely fail. Fortunately students develop excellent skills at 'aquireing' software.
Learning to install linux for the first time isn't easy (especially for students) And the home computer is most likely windows. 'Dad can i re-partition the hard drive?' And how will your little brother play Max payne?
Now if students fail, the uni gets less fees and lecturers get sacked.
Fortunatly for us the last few years we only get taught software design. And are expected to learn the platform and language ourself.
ie we are learn how to learn.
So once ive finished and have the time (unemployed) then ill get right into linux.
A dirty big chemical laser mounted on a 747 using a mirror and smaller lasers to aim it.
Here is a great use they havn't thought of.
Or more likely wont admit. Simply sweep the laser across a body of troops. Anyone looking in that direction will have their retinas burnt out. The laser could be defocused to cover a larger area.
Event the targeting laser could be used for this.
Would be a great from of riot control.
Slashdot Mirror
note : power supplies contain high voltage have the potential to kill. (even after being unplugged)
From personal experience having a very small amount of airflow is a huge cooling improvement over no airflow at all. (Think of how cool a slight breeze can be on a hot day.) A 12V fan running at 5V (1500-2000rpm) is virtually silent. my favourite mods. Open the power supply and solder its fan onto 5V rather than 12V. A good power supply will have good heatsinks so you can get away with this. Cut two straight bits of a paper clip stick them into gnd and 5v on a spare floppy plug then stick your processor fan on the other end. Some fans work at 5V some dont. I have my intel fan running at 7V if you still want the motherboard to monitor the fan speed you need to connect the pulse line from the fan to the motherboard. (yellow or green one) Im running a 900mhz Celeron and a 1Ghz Athalon like this and they run fine at about 40 C while both encoding DVD to divx. On a hot day too (35 C) I also ran a PII350 for 2 years without a fan. it ran at 60 to 70 C mostly. at 75 the mboard beeped at me (hot days) and usually meant i was playing too many games. Began running it at 400mhz with the original fan slowed down to ~1500rpm 7V and it ran stable at 30C
Australia a continent? Its part of the USA!
Im a final year software systems eng student in Australia, at RMIT.
The majority of our course so far has been with windows.
Builder, Delphi, Vc++(yuk), Java(forte) etc.
At our uni the funding is crap. thanks johnnie.
I do most of my studying at home simply because the on campus computers are slow and there are never enough to go round.
As a student if you dont have your own computer at home and dont get hold of a pirated copy of the development software then you will most likely fail. Fortunately students develop excellent skills at 'aquireing' software.
Learning to install linux for the first time isn't easy (especially for students) And the home computer is most likely windows. 'Dad can i re-partition the hard drive?' And how will your little brother play Max payne?
Now if students fail, the uni gets less fees and lecturers get sacked.
Fortunatly for us the last few years we only get taught software design. And are expected to learn the platform and language ourself.
ie we are learn how to learn.
So once ive finished and have the time (unemployed) then ill get right into linux.
A dirty big chemical laser mounted on a 747 using a mirror and smaller lasers to aim it. Here is a great use they havn't thought of. Or more likely wont admit. Simply sweep the laser across a body of troops. Anyone looking in that direction will have their retinas burnt out. The laser could be defocused to cover a larger area. Event the targeting laser could be used for this. Would be a great from of riot control.