Due to the large number of  bits in the Giga-PUF, characterization of the entire bit space is impossible. Thus, the Giga-PUF is natively resistant to machine learning attacks.

Due to the limited number of bits in SRAM PUFs, characterization of the entire bit space is possible. Thus, SRAM PUFs often require the implementation of additional protective layers to secure the PUF.

Many concurrent applications can be served by the Giga-PUF, including unique key generation, device enrollment and authentication, true random number generation, etc.

SRAM PUFs are normally used for only one application: unique key generation. Most do not have enough data bits to enable other security applications.

Giga-PUFs are synthesizable and implementable as soft IP. They are foundry and process node agnostic. This enables rapid, scalable adoption in any product.

SRAM PUFs are instantiated on SRAM hard IP in each node and at each foundry. This limits the true and rapid scalable nature of the IP.

Giga-PUFs provide ultimate key flexibility. A nearly limitless number of keys can be generated with large sizes.

SRAM PUFs are limited in the number of keys and the size of the keys it can generate, with many products offering only one key per PUF.

Giga-PUFs only utilize logic elements in the design, leading to much smaller overall circuit area.

Due to their smaller size, Giga-PUFs use much less operational power compared to their larger counterparts.

Giga-PUF incorporated IPs come with the optional enhancement to add true random number generation to the functionality of the PUF, further expanding PUF security applications.