Tangent minimum requirements.
Mac OS X 10.8.1 or later
Processor: Intel Core 2GHz or better
RAM or memory requirements are normally driven by budget and how fast you expect Tangent to run. Tangent will run in 2GB but 8GB is recommended.
If you are regularly dealing with multiple windows containing large queues of patterns with many points then adding memory will see a significant improvement in performance with Tangent's interface and nesting. Low RAM may cause operations to generate errors where given more RAM they would otherwise succeed.
Screen Resolution: 1280 x 800 or larger
Multiple displays are supported
Practically, this means in most situations, a current spec iMac with 8GB of RAM will give good performance. With SiliconEye, larger screens and faster processors will give noticeable improvements in speed and ease of use.