True Random Number Generators (TRNGs) are used in a ‎variety of applications including cryptography, ‎computer ‎simulation, gambling games, machine learning and ‎hyperdimensional computing. In ‎this work, ‎we report a novel high dense, high throughput and ‎high entropy DRAM-based TRNG, named DTRNG, that ‎‎exploits the process variations inherited by the DRAM cell’s ‎access transistor and sense amplifiers. DTRNG ‎can be employed ‎in commodity DRAM chips with no hardware overhead and ‎using the standard memory ‎controller commands. The random ‎sequence generated by DTRNG has passed all the NIST test ‎without any ‎post-processing demonstrating randomness and ‎suitability for security scheme.‎