Umm, Johny, your off there my friend. The GTS250 is about an inch or two shorter than the 260's. Most cases can take it, but not a bottom tier mATX case. You should run a mid-size at least. It fit fine (after removing a cooling bracket) in my buds Antec 900. Best bet is to measure the cards (check the manufactures website) and measure your available room. No one likes returning things that aren't defective.