Ok, I've been messing around with a bit of an experiment and I'd like to see if some of you can replicate my results...
It occurs to me that one of the limitations of the fan on fins coolers is that they can recirculate their own air... that is to say the fan forces air down on to the fins which then blows out the bottom and circulates back up from the motherboard toward the fan, which grabs some of this warm air and blows it back into the cooler... It crossed my mind that preventing this would probably lower CPU temps somewhat.
Inventive sort I am, I said... Ducting! Get the fan's intake air from someplace other than right on top of the heatsink.
Here's what I did...
I took a file folder (nice middle weight cardboard, pretty colours ) and cut a strip about 5cm (2" wide) long enough to fit all the way around the fan. I then wrapped it around the fan making sort of a square chimney standing up above the fan, folded the corners and taped it to itself so it was removeable without much difficulty. (think of a small square chimney sitting on the heatsink with the fan inside)
Ok, fire up the system and let the heat stabilize... 44c
Slip on my little fan shroud and let it settle... 42c
Next try this with the case closed, shroud off... 46c
And finally case closed, shroud on... 42c
Repeat... same results.
Anyone else like to try this and let me know what they get?
I'd be very interested to see if this is a fluke or not...
--->It ain't better if it don't work<---
It occurs to me that one of the limitations of the fan on fins coolers is that they can recirculate their own air... that is to say the fan forces air down on to the fins which then blows out the bottom and circulates back up from the motherboard toward the fan, which grabs some of this warm air and blows it back into the cooler... It crossed my mind that preventing this would probably lower CPU temps somewhat.
Inventive sort I am, I said... Ducting! Get the fan's intake air from someplace other than right on top of the heatsink.
Here's what I did...
I took a file folder (nice middle weight cardboard, pretty colours ) and cut a strip about 5cm (2" wide) long enough to fit all the way around the fan. I then wrapped it around the fan making sort of a square chimney standing up above the fan, folded the corners and taped it to itself so it was removeable without much difficulty. (think of a small square chimney sitting on the heatsink with the fan inside)
Ok, fire up the system and let the heat stabilize... 44c
Slip on my little fan shroud and let it settle... 42c
Next try this with the case closed, shroud off... 46c
And finally case closed, shroud on... 42c
Repeat... same results.
Anyone else like to try this and let me know what they get?
I'd be very interested to see if this is a fluke or not...
--->It ain't better if it don't work<---