which type graphics cards have the longest life span evga, sapphire ext

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Life span of a card depends more on what you are doing and how hard you are on the card and adequate air flow so the card does not overheat. The only cards I have had die were doomed to fail due to heat issues either from the setups the cards were installed in, improper installation without thermal paste, or poor or damaged heat syncs. If you buy a major brand with a good track record and don't abuse it, it should last as long as the computer does. That being said, if you are looking at over clocking or have more specific needs in mind than type of card can make a huge difference.

evilavatar

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Life span of a card depends more on what you are doing and how hard you are on the card and adequate air flow so the card does not overheat. The only cards I have had die were doomed to fail due to heat issues either from the setups the cards were installed in, improper installation without thermal paste, or poor or damaged heat syncs. If you buy a major brand with a good track record and don't abuse it, it should last as long as the computer does. That being said, if you are looking at over clocking or have more specific needs in mind than type of card can make a huge difference.
 
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AMDRadeonHD

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ASUS is pretty much known for the best build quality and longetivity in terms of graphics cards. Super alloy+DIGI VRM and heatpipes makes the heat dissapate from the GPU and blows out of the case, DirectCU II TOP is the best.
 
Difficult to answer especially since brand names do not actually manufacture their own graphics cards (or anything else for that matter). Graphic cards are manufactured by OEMs (Original Equipment Manufacturers) under contract for whatever brand names. The two major graphic cards that I know of are Pine Tech (they own the XFX brand name) and PC Partner (they own the Sapphire brand name).

The longest lasting GPU that I ever owned is actually my current Radeon HD 5850 which I bought back in Oct 2009 which makes it 3 years & 10 months old. It's a Sapphire card.
 
Several manufacturers use upgraded components specifically intended to offer a longer lifespan. EVGA generally uses reference, stock components on all their cards except the highest-end Classified models. Asus, Gigabyte, and MSI generally use all custom, upgraded high-quality components for almost all their cards, often all the way down to their low-end models.

There have been studies that have shown that Gigabyte's "Ultra-Durable" components are actually more than just a marketing gimmick and really do extend the life of the card. That logic would also apply to the high-grade components of other manufacturers as well.