Excuse me guys, i know that this question was always made, but can you explain me the difference please.I tried to search a answer but i can't find it :(RegardsTUNKA

Well, bilinear filtering basically is what makes the textures look soft (vs. blocky without filtering). Trilinear goes one step further: the sim uses mip-mapping, which means that the further a texture is away, the less detailed it becomes, as a smaller instance of the texture is used. With bilinear filtering, you will experience sharp transitions wherever a more detailed texture meets with a less detailed one. Trilinear filtering smoothes these transitions, so it looks more natural.In any case, if your card supports trilinear (most cards do), you should be using it. I don't think there's a noticeable performance difference.-Daniel