DELL 490-BCFS, Radeon R7 250, 2 GB, 128 bit, 4096 x 2160 pixels, PCI Express 3.0 DELL 490-BCFS. Graphics processor family: AMD, Graphics processor: Radeon R7 250. Discrete graphics card memory: 2 GB, Memory bus: 128 bit. Maximum resolution: 4096 x 2160 pixels. DirectX version: 12.0, OpenGL version: 4.3, Dual Link DVI. Interface type: PCI Express 3.0. Cooling type: Active