| Thermalright SLK/SK mod On my SK7, the fan overlaps the heatsink (like on the above picture). If I put my hand underneat the overlapped part, there is a lot of air flow coming from the fan that is missing the heatsink! This results in less cooling.
I began to think how to solve this problem. First I put cardboard in the gap to prevent the air from escaping, but it resulted in higher temps (by about 5C). My guess is it caused more resistance to the fan and thus caused less airflow.
Then I came up with the idea of possably bending the fins on the heatsink. If they were bent and evenly spaced to be as wide as the fan, there would be no more excaped air! And as another bonus since the fins would be farther from each other, there would be less resistance of airflow.
The problem: Since the fins are a fixed lenght, and they would be bent out (my guess about 30 degrees) there would be approxamatly a 1/8 gap from the outermost bent fin to the fan.
Is anyone daring enough to take a risk of ruining their heatsink but possably get better performance?
[text was edited by author 2003-08-22 17:55:28] |
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| Personally, I am not.
I think they sell adapters to large fans which will funnel more air down to the actual fins of your heatsink. Might want to look into one of those.
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Click Me I'm Deviant! |
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| reply to MikeRaach
I'm basically talking about doing something like the Zalman flower, but not quite to the extent. |
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| reply to login name
The SK7 is made for a 80mm fan, and that is what I am using. It is just the design of the heatsink to not be as wide as the fan. |
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| reply to MikeRaach
I understand.
The zalman cools by passive cooling, where most others require a fan.
I was just suggesting something like this (see picture) to funnel more air to the fins. I know you tried it with some cardboard, but this might be a bit more effect.
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Click Me I'm Deviant! |
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| I tried something similar to that a LONG time ago when I had a valcano 6cu (oh did it suck). I tried a 60mm to 80mm converter. It caused too much pressure and the 80mm fan cooled worse than the stock 60mm fan.
Basically I'm saying bend the fins out a little to kind of look like the Zalman flower (but not to the extent) and still have the 80mm fan on it. |
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| That might work, but I'd never risk bending my fins... |
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 MRK8Premium
join:2001-01-11
San Antonio, TX | reply to login name
said by login name:
I was just suggesting something like this (see picture) to funnel more air to the fins. I know you tried it with some cardboard, but this might be a bit more effect.
The only problem I see with it is figuring out how to keep it in place securely on the heat sink. Other than that it's a good idea. |
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| reply to MikeRaach
I decided to try it, and so far results appear to be promising. It looks like my temps have dropped ~5C!!!
I'll report back tomorrow after more testing. |
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| reply to MikeRaach
Smart thinking!!! No down sides that i see. |
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| reply to MikeRaach
how exactly did u bend them? |
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| With my fingers. Copper is very soft and easy to bend.
The fins were actually clipped together so I just used a screw driver to pry them apart. |
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hman1
join:2002-01-17
Canada | reply to MikeRaach
SMART man! |
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| reply to MikeRaach
Looking good, it seems that by adding more area to be directly cooled by the HSF helped to dissipate the heat more efficiently from the copper fins. |
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| said by OLDb34tBoX:
Looking good, it seems that by adding more area to be directly cooled by the HSF helped to dissipate the heat more efficiently from the copper fins.
Yup, exactly. I'm rather surprised thermalright didn't make these heatsinks like this. |
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| reply to MikeRaach
almost looks kinda sexy...*gets ready for date with slk900u*
ok babe, lets see how much you can bend 
seriously, good thinkin! im gonna bust out the screwdriver this weekend and work on my HS too!
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2.4C::Abit IS7::2x512 XMS3200::Antec TRUE 430::SLK900U+92mmTornado |
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hman1
join:2002-01-17
Canada | reply to MikeRaach
LOL to the above post. |
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| reply to MikeRaach
Yup, temps have dropped 5-6C. Was running at 48C idle, now running 42.5C idle (Panaflo 32cfm fan with a Barton 2500 oc'ed to 10.5x200 @ 1.65).
Stupid Abit NF7-S 1.8 bios is about 10C high too. |
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| Oh yea, its about 84F in my room right now. |
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 sak1
join:2000-12-27
Wethersfield, CT | reply to MikeRaach
Just another thanks here. Plan to give it a go any day now.
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Never let the truth get in the way of a good story. |
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