DELL Radeon Pro WX 4100, Radeon Pro WX 4100, 4 GB, GDDR5, 128 bit, 3840 x 2160 pixels, PCI Express 3.0 DELL Radeon Pro WX 4100. Graphics processor family: AMD, Graphics processor: Radeon Pro WX 4100. Discrete graphics card memory: 4 GB, Graphics card memory type: GDDR5, Memory bus: 128 bit. Maximum resolution: 3840 x 2160 pixels. DirectX version: 12.0, OpenGL version: 4.5. Interface type: PCI Express 3.0. Cooling type: Active, Number of fans: 1 fan(s)