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They are exactly the same. The KB is unique to Best Buy. Best Buy often has the manufacturer create an identical variant with a slightly different model number, both to know right away if the product was purchased from Best Buy, and to prevent price matching the competition by way of not having an exact model number match.
Sorry, there was a problem. Please try again later.Yes they are physically the same exact card. The sku / model # ending in B is only sold at Best Buy. EVGA has a partnership with Best Buy, I'm not sure why. No clue how it could benefit EVGA but for Best Buy it means they no longer have to price match Amazon or Newegg. I'm pretty sure EVGA still has a page up about it. Try going to evga. com/bestbuy (not sure if it'll allow me to share the link so I just put a space lol)
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