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Choke: open frame vs closed design

post #1 of 3
Thread Starter 
It has recently come to my attention that certain versions of EVGA's GTX460 EE employ open-frame chokes (see pic below). My understanding is that such usage is only common in lower end cards. Higher end cards usually use closed design. To me, GTX460 is not a lower end card.

So, what advantage(s) is there (besides the obvious 'lower cost') for an open design?

While I have some reservation about this design (at least psychologically), I welcome its non-reference cooling design. EE means ''external exhaust'' as it exhausts all hot air from its rear to the outside and so it makes other components inside the case happy. I think this is particularly helpful if a pair of them is used in SLI. It makes thermal management easier. However, this is a trade off because this cooling design is not as good as the reference design (ie a centre fan) as far as the GPU itself is concerned. So, the GPU runs relatively a little hotter than a reference design.

And one more good thing is EVGA's 'FPB' (Free Performance Boost).
Link: http://www.evga.com/forums/tm.aspx?m=498804

post #2 of 3
The chokes are just filters to remove RF interference from the power source, that's all they do.

Unless you're running your card in a place with a very high level of such interference, there's zero benefit to an 'upgraded' closed coil design.

Even if you were I'm not personally convinced that there's a huge benefit to the closed (I believe they call those 'ferrite' coils) style vs the open style anyways. I think they mostly just look cooler is the truth.
Edited by brettjv - 1/4/11 at 9:22pm
    
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post #3 of 3
They will not affect the card at all.

RF interference is a joke.

And btw, the EE cooler is terrible. Just get a decent case, and a normal GTX460.
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Alienware M9700
(14 items)
 
Wackbook pro
(12 items)
 
Mpowerlicous
(12 items)
 
CPUCPUMotherboardGraphics
AMD Turion ML-42 2.4GHz AMD Turion ML-40 Alienware nForce3 2X nVidia GeForce Go 7900GS SLI 
RAMHard DriveOSMonitor
1GB DDR 333MHz Samsung Spinpoint 250GB Windows XP Professional 1920X1200 Integrated LCD 
Case
Alienware M9700 chassis 
CPUMotherboardGraphicsGraphics
Core i7 3615QM @2.3GHz Apple Logic Board Intel HD 4000 Nvidia GT 650M 512MB 
RAMHard DriveOSMonitor
16GB 1600MHz DDR3 500GB Samsung 840  OSX 10.10 1440x900  
PowerAudioAudioAudio
85W PSU Schiit Modi Schiit Magni 2 Über DT770 Pro 
CPUMotherboardGraphicsRAM
Intel i7 3770K MSI Z77 Big Bang MPower Radeon R9 270X 4X4GB G.Skill  
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