not sure
i didnt test them on air to start with so dont know if they were working before
had to graphics display on air, even put the aircoolded fan backon it, even that didnt work
sent them to evga and they got damaged in transit, evga took no pictures of how it was in the box when it turned up, nore did i, has they courior requestion oictures of how it was backed, and how the boxed got like
like anyone takes a picture of how they packaged it begore sending it