The Dell Precision 3581 is the top performer in the 3000 series, offering Intel 45W H-series CPUs and advanced graphics options like RTX A1000 and RTX 2000 ADA for demanding CAD and rendering tasks. Slightly thicker than the 3580, it includes an optional 97Wh battery and weighs under 1.8kg. Ports include USB-A, USB-C with power delivery, HDMI, Ethernet, SD card reader, and optional smart card reader. Ideal for 2D/3D CAD workflows, simulations, and visualisation, it delivers mid-range power in a portable design.