Problem with DirectX or something like that

When playing Fifa 17, Mafia 3, Cod IW is popping up the error: DirectX function device->CreateTexture2D( &texDesc, desc.subResourceCount != 0 ? reinterpret_cast(desc.subResourceData) : 0, &texture->m_texture2d) failed with E_OUTOFMEMORY (“Direct3D could not allocate sufficient memory to complete the call.”) GPU: NVIDIA GeForce GTX 760, Driver:37570. Free virtual memory: 4288100564kB/4294967168kB. Make sure you have a supported graphics card with at least 1024 MB
Because of what it could be and how to fix it?
P. S the error POPs up not always, sometimes the game just closes.