Strange really - Gainward have their own cooling system and now they dont...
If you ordered a card as OEM is it possible that gainwards OEM cards are the reference cards to save 'cost' on their part? If you find a 'true' retail product it should look how its pictured - i know ive seen reviews of such so they must exist lol.
Here is a pic of mine btw which as you can see is the same as all yours apart from the sticker.
Does it really matter though?
Unless of course you paid extra for it.