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  #11  
Old 03-24-2017
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Originally Posted by breixobaloca View Post
Hehehhehehe

BTW, looking at the unreliability of some "FDB" fans (notice the commas), what about the Hong Hua fans Seasonic uses here?...

Jon, do you use them for Corsair units, right?
Hong Hua? Yes. The Seasonic ones are probably the same. I seriously doubt a company like Seasonic would play that game.

And at least the fan doesn't have a sleeve bearing part number on it!
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  #12  
Old 03-24-2017
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Originally Posted by turkey3_scratch View Post
Since real fluid-dynamic bearings have to be licensed by the Matsushita design (and therefore give Matsushita money) couldn't there be some way to look up what ones are real and fake based on licensing information?
How much more time on the patent?
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  #13  
Old 03-24-2017
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How much more time on the patent?
What do you mean? I don't know I'm just going off Hardwaresecrets http://www.hardwaresecrets.com/the-t...ring-fdb-fans/
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  #14  
Old 03-24-2017
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Originally Posted by turkey3_scratch View Post
What do you mean? I don't know I'm just going off Hardwaresecrets http://www.hardwaresecrets.com/the-t...ring-fdb-fans/
In the US, patents run 20 years. I don't know how long they run in China or Japan.

The length of time the patent on the FDB is restrictive in the relevant country is finite. The patent expires. After that anyone can make a true FDB and not pay a penny for IP.
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  #15  
Old 03-24-2017
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Quote:
Originally Posted by breixobaloca View Post
BTW, looking at the unreliability of some "FDB" fans (notice the commas), what about the Hong Hua fans Seasonic uses here?...
Hong Hua makes real FDBs; even on inexpensive fans made by them. There were some Rosewill's awhile back that were FDBs from Hong Hua. They were by no means spectacular, as the blade geometry and design were pretty standard for a 120mm or 140mm offering. On the other hand, they were also only $8-12 USD depending on the sale price at the time. Which is the normal batting realm of sleeve or single ball bearing fans.

Quote:
Originally Posted by turkey3_scratch View Post
Since real fluid-dynamic bearings have to be licensed by the Matsushita design (and therefore give Matsushita money) couldn't there be some way to look up what ones are real and fake based on licensing information?
Many companies sell "Hydro Dynamic Bearings" or "Hydro-Wave Bearings"; and a million other titles. These all are built on the same core principles of a fluid dynamic bearing but with a minor enough change to call it something new.

Likewise, I don't think anyone really pays attention to some of those legal matters in china. I've seen a number of FDBs given a new name but basically being copies of Matsushita's design.

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Originally Posted by turkey3_scratch View Post
What do you mean? I don't know I'm just going off Hardwaresecrets http://www.hardwaresecrets.com/the-t...ring-fdb-fans/
Aris' article is actually a bit more clear on a few points. http://www.tomshardware.com/reviews/...1,4193-18.html

I wish he was state-side so I could send him some of my treasure trove of fans to dissect and take better photos of. Unfortunately only about half of the models I purchased are still on the market now but I have a pretty wide sampling of all of the nonsense bearing names.
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  #16  
Old 03-24-2017
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This is all because you Sleeve-nuts think FDB is best!
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  #17  
Old 03-24-2017
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This is all because you Sleeve-nuts think FDB is best!
Anything is quieter than DBB.
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  #18  
Old 03-25-2017
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hmm i do not think its EVGA, its more the Fan Manufacturer.

But its funny^^ little bit

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Originally Posted by GI_Joe View Post
This is all because you Sleeve-nuts think FDB is best!
i like double ball bearing thats because i am originally from the mechanical engineering sector, but all depends on price and purpose
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Last edited by tinpoint; 03-26-2017 at 03:24 AM.
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  #19  
Old 03-25-2017
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Originally Posted by Tator Tot View Post
but I have a pretty wide sampling of all of the nonsense bearing names.
What about a good article on JG.com?
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  #20  
Old 03-25-2017
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I see, basically you need to crack the bearing open to find out if the fan in the PSU is the one the manufacturer claims it to be. Sad.
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