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post #21 of 27
Thread Starter 
hm alright ill look at non refrence cards. id rahter my pc not explode .
just a silly question. what does the terms refrence and non refrence actually mean?
    
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post #22 of 27
Thread Starter 
which ones better Gigabyte GTX570 1GB or EVGA GTX570HD SC. i have no idea if either are reference or non reference
    
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post #23 of 27
Thread Starter 
Bump
    
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post #24 of 27
Quote:
Originally Posted by bello View Post
which ones better Gigabyte GTX570 1GB or EVGA GTX570HD SC. i have no idea if either are reference or non reference
One has a full HDMI port, and I think DP port.
    
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post #25 of 27
"Reference" cards are ones made to nVidia's "reference" specifications. They use a specific PCB with specific components laid out in a specific way on the board, using a specific cooling system. Also, nV states the clocks that the 'reference' card runs at.

Often times people will call the cooler that nVidia specifies for the card the 'reference' cooler. While this is correct, it should be noted that a card can still be a 'reference card' in terms of the PCB and components, without actually having the 'reference' cooling system. Also, changing the clocks, such as with on OC'd version, whilst technically deviating from 'reference' standards, doesn't really make a card non-reference in most people's eyes.

IOW, most of the time what people mean by 'reference' is that it's a 'reference' PCB and components.

Now ... whenever a new card first comes out, esp. the high-end cards, the only cards available will be "reference" versions.

But over time, some brands (Asus, Gigabyte, and MSI are the most-likely candidates in the nVidia world, since these are huge mobo makers with the resources and types of facilities to make whole gfx cards) will start designing their own versions of the card, wherein they still use the same chip (in the case of the 570, the chip is called a GF110) but they create like a 'custom' version of the card. They'll often use upgraded components, laid out differently on the PCB, a custom 'after-market' cooler, nice OC's out of the box, etc.

In the case of the non-reference 570's, at least for now, they're pretty much all 'better' than the reference version because they all use an upgraded power delivery system to the chip (often referred to as VRM's), whereas the VRM's on reference 570's ... seem to have some problems.

It should be said that sometimes, however, non-reference cards are 'cheaper' versions made with crappier components, so it's not like 'non-reference' is universally better ... it really depends on the particular card.

Lastly ... unless you really follow this stuff closely, it's best to just ask what people think rather than trying to 'figure out' for yourself whether a card is reference or not. It's not something that's generally advertised, and it's not always 'obvious' by looking at a picture of a card. *Often* an after-market cooler signifies a non-reference card, but certainly not always.
Edited by brettjv - 5/11/11 at 12:37am
    
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post #26 of 27
Thread Starter 
thanks for that amazing reply brettjv.
so could u guys leave me some suggestions on good 570's?
    
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post #27 of 27
Quote:
Originally Posted by bello View Post
thanks for that amazing reply brettjv.
so could u guys leave me some suggestions on good 570's?
I own an EVGA GTX 580 reference card and very happy with EVGA. I've read on the GTX 500 Series Owners Club thread the MSI GTX 570 Lightning cards are sweet by owners, cool temps, and very over clockable. Come over to our thread and take a read, and after you get it, join up.
     
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