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Quote:


Originally Posted by Black Magix
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I need some fans for my rad as these pos slipstreams are failing miserably...reccomendations?

BTW, I'm trying to go silent and on a 3 prong plug...let me know


May I know what rad do you have?
 

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Originally Posted by Black Magix
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Swiftech 320

IMHO, you should be fine with some of these:
http://www.petrastechshop.com/12yalod1cafa1.html

It would be a little louder but AFAIK, they are good for rads like yours.
In fact, you could actualy get a rad like yours from petras with these fans attached to it already.

Or if you dont like the fans above, you could go with these:
http://www.petrastechshop.com/12scsfscafan1.html

They are a bit more expensive but AFAIK they are good performers on a rad.
 

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Originally Posted by SpaceCowboy
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The fans that come with the "compact" kits are rated at 82 CFM.

What do you mean by "Compact" kits? Are you talking about the Petras tech MCR320 with Yates?
 

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Originally Posted by DUNC4N View Post
Nutty, I was just about to add that rad, and those fans to my cart...

Do it, I have a 220 rad with them on it too.
And all my case fans have been switched to them.

They're awesome fans.
Cheap too.
 

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Quote:


Originally Posted by unleaded91
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What do you mean by "Compact" kits? Are you talking about the Petras tech MCR320 with Yates?


The Swiftech Compact kits. Hell, any of their kits, compact or not. Example: Swiftech H20-220 Compact Liquid Cooling Kit.
 

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Originally Posted by SpaceCowboy
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The Swiftech Compact kits. Hell, any of their kits, compact or not. Example: Swiftech H20-220 Compact Liquid Cooling Kit.

Are you saying that they are no good?


I was just talking about the MCR320 with Yates attached to it that you could buy from petras not a whole WC kit(if I understood you right).
 

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I understand the Petra kit is going for noise reduction, not optimal cooling. Taking the pump out of the equation, the Swiftech kit is louder, cools a little better because of the fan CFM, but is not optimal for that radiator either. The MCR series radiators have more surface area than most other radiators, but less density than most. They require less pressure to penetrate the fin arrangement. 25 mm deep fans are less than ideal for creating that pressure, they are better at evacuating hot air from a case where they don't have to pass the air through anything other than a hole. A 38mm deep fan at 140 CFM or less is the ideal fan for the MCR series if you want to ring every little bit of cooling out of it, noise be damned. With the denser fin designs of other companies, along with the added depth, you'd need more than that 140 CFM to do the same. It would be Delta fan time.
 

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Originally Posted by SpaceCowboy View Post
I understand the Petra kit is going for noise reduction, not optimal cooling. Taking the pump out of the equation, the Swiftech kit is louder, cools a little better because of the fan CFM, but is not optimal for that radiator either. The MCR series radiators have more surface area than most other radiators, but less density than most. They require less pressure to penetrate the fin arrangement. 25 mm deep fans are less than ideal for creating that pressure, they are better at evacuating hot air from a case where they don't have to pass the air through anything other than a hole. A 38mm deep fan at 140 CFM or less is the ideal fan for the MCR series if you want to ring every little bit of cooling out of it, noise be damned. With the denser fin designs of other companies, along with the added depth, you'd need more than that 140 CFM to do the same. It would be Delta fan time.

Please pardon me but I still don't understand one of your point. What do you mean by "the swiftech kit will a little better because of the fan cfm but still not optimal for that radiator"? Please correct me if I am wrong but this is bow I understood what you said.
As for your other points, I totally agree with you. If you are after. The coolest solution you could get and don't care a out the noise the 38mm fans is what you need. But I think He,the guy who needs help, is looking for a good performing fan for his rad with a low noise level, that is why I suggested those
25mm fans. As you said his MCR320 has a low fin density, so 25mm fans will give him optimal cooling without compromising the silence since his rad does not really need a lot of static pressure due to the low fin density.
If you have a thick rad, then it would best to have 38mm fans, but for his case, those 25mm fans I suggested would give him the the best cooling he wants based on the noise he can tolerate. Also, there are a lot of other people like him(the guy who needs help) who has the same rad and uses one of those fans I suggested.
 

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Quote:


Originally Posted by unleaded91
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Please pardon me but I still don't understand one of your point. What do you mean by "the swiftech kit will a little better because of the fan cfm but still not optimal for that radiator"? Please correct me if I am wrong but this is bow I understood what you said.

Swiftech supplies an 82 CFM fan with its kits. It's more or less a middle ground fan for that radiator. Lowering the speed of the fan reduces noise at the expensive of cooling. Going with a higher CFM fan than 82 will increase the cooling at the expense of noise. I read a test by Swiftech where they rated the cooling of their radiator running a 134 CFM fan, which IMHO, fudges the numbers because they supply you with an 82 CFM fan.
 

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Quote:

Originally Posted by SpaceCowboy View Post
Swiftech supplies an 82 CFM fan with its kits. It's more or less a middle ground fan for that radiator. Lowering the speed of the fan reduces noise at the expensive of cooling. Going with a higher CFM fan than 82 will increase the cooling at the expense of noise. I read a test by Swiftech where they rated the cooling of their radiator running a 134 CFM fan, which IMHO, fudges the numbers because they supply you with an 82 CFM fan.
Ahh okay, I get you know..Yah I agee, that makes their numbers inaccurate. You are right also about the the CFMs of the fans when it comes to MCR320 type of rads, the more cfm and static pressure the more performance.

If he wants more performance, then he should go for fans that have more cfm and static pressure. But if he wants silence the go with the lowest dB rating with the highest cfm and static pressure. Also, he could go for the middle which is the loudest he could tolerate and the highest cfm and static pressure he could get.
 

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Here's a chart I came across involving fan speed, temperature deltas, a 340 lt/hr pump, & the MCR320.



The fans used were the popular Ultra Kaze's in the 0-1000, 1000-2000, & 2000-3000 RPM versions. The Delta column equals the CPU temperature in xx°C above room temperature. The fan model would be by RPM range.

Here's another chart to calculate how much heat the CPU puts in to the cooling system.

http://extreme.outervision.com/tools.jsp

We'd need his overclock & CPU voltage on the Q9650 to get an idea of what fan to run.
 

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Originally Posted by SpaceCowboy
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Here's a chart I came across involving fan speed, temperature deltas, a 340 lt/hr pump, & the MCR320.



The fans used were the popular Ultra Kaze's in the 0-1000, 1000-2000, & 2000-3000 RPM versions. The Delta column equals the CPU temperature in xx°C above room temperature. The fan model would be by RPM range.

Here's another chart to calculate how much heat the CPU puts in to the cooling system.

http://extreme.outervision.com/tools.jsp

We'd need his overclock & CPU voltage on the Q9650 to get an idea of what fan to run.

Yup, that is true. When it comes to cooling an overclocked Q9650, we'd need how high is his overclock. But he might be limited as to what fans he could use when he considers the noise from the fans.


Although, the numbers on the chart seems diff. from what I used to see. Are those numbers in degress celsius? Why are they over a thousand? Why are they increasing as the speed of the fan increases shouldnt they be decreasing?
 
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