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post #51 of 57
Quote:
Originally Posted by LtCheese View Post

Quote:
Originally Posted by ehume View Post

Wavy blades gain nothing. Corsair rejected them for their rads.

GE uses "wavy blades" on their GE90 and GEnx high bypass turbofan engines. I think they know what they are doing. I'm not saying that one should buy those fans simply for that reason, but I speculate that GE wouldn't have used that blade design on its highest end engines if it didn't work


I bought an Akasa Apache because I thought they were replicating the wavy leading edges of the big fans on jet engines. But the wavy leading edges on jet fans are only wavy at the leading edges. The rest of the blades are not wavy. A bit curved, perhaps, but not wavy.

 

The same cannot be said for the Apache and the blades on the Havik. The blades themselves are wavy. The leading edges are even. They must be so because they are designed to come up against grills and such. So the wavy blades of fans are not the same as the wavy leading edges of jet engine fans.

 

I have tried the Apache, the Blade Master, the Enermax Magma and two types of AeroCool Shark. Trust me, all waviness does is to add noise. It does not improve airflow. As someone mentioned above, among commercial fans, none use a wavy blade.

 

That said, the Havik has proven itself to be a competent cooler. It's not as good as a D14, a Silver Arrow or a Phantek, but it is less expensive.

 

Personally, until Noctua starts putting PWM fans on all of their D14's I'd go with a Silver Arrow. Just make sure you buy low profile RAM.

 

BTW -- I have tested all of the fans I mention above except the Haviks. See my sig for the various studies.

 

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post #52 of 57
Quote:
Originally Posted by ehume View Post



I bought an Akasa Apache because I thought they were replicating the wavy leading edges of the big fans on jet engines. But the wavy leading edges on jet fans are only wavy at the leading edges. The rest of the blades are not wavy. A bit curved, perhaps, but not wavy.

The same cannot be said for the Apache and the blades on the Havik. The blades themselves are wavy. The leading edges are even. They must be so because they are designed to come up against grills and such. So the wavy blades of fans are not the same as the wavy leading edges of jet engine fans.

I have tried the Apache, the Blade Master, the Enermax Magma and two types of AeroCool Shark. Trust me, all waviness does is to add noise. It does not improve airflow. As someone mentioned above, among commercial fans, none use a wavy blade.

That said, the Havik has proven itself to be a competent cooler. It's not as good as a D14, a Silver Arrow or a Phantek, but it is less expensive.

Personally, until Noctua starts putting PWM fans on all of their D14's I'd go with a Silver Arrow. Just make sure you buy low profile RAM.

BTW -- I have tested all of the fans I mention above except the Haviks. See my sig for the various studies.

what exactly are the benefits of pwm fans? can they turn at lower rpm?
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post #53 of 57

PWM fans can be controlled by any motherboard. Outside of Gigabyte boards few mb's will vary Voltage to control fans.

 

I use three PWM fans: 2 on my cpu heatsink and one on top to feed air to my cpu heatsink.They spin slowly when my cpu idles, spin fast when my cpu has a lot of work to do.

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post #54 of 57
Quote:
Originally Posted by Lime View Post

Havik is great, especially because it comes with two fans. Other HSFs perform great, but they come with 1 or no fans, which can make them perform lower than the Havik. Well, that's what I read. tongue.gif

the new Thermalright line comes with fans so does the entire line of Noctua's coolers...the ones that need two come with them... The only ones that don't ATM are the Prolimatech coolers...
post #55 of 57
Well, to beat a dead horse, yes, our Havik is one nice beast when it comes to price AND performance. Both the 120 and 140 Havik's are in the top of their respective price brackets as far as performance.
post #56 of 57
can both Havik 120 and 140 fit on NZXT Vulcan? TiA
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post #57 of 57
The 140 won't fit unless you remove the side panel. not sure about the 120 though. I'm assuming it does.
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