CPU: Intel Core i5-4460 3.2GHz / AMD FX-6300
RAM: 8 GB
OS: Win 7 64
CPU: Intel Core 2 Quad Q6600 2.4GHz / AMD Phenom 9850 Quad-Core Black Edition
RAM: 4 GB
OS: Win 7 64
: Note that newer standalone downloads may default to the "Allegro X" interface. If you specifically need the 17.4 Classic Viewer
Modern PCBs are packed with high-speed signals. The 17.4 viewer allows you to see the actual trace properties, differential pair groupings, and length matching constraints. This is a massive upgrade over a static PDF where you can't "interrogate" the traces. 3. Enhanced 3D Viewing
To get the Allegro Free Physical Viewer 17.4 , you can download it directly from the Cadence Allegro Downloads Page