Nvidia mobile GPU based on TSMC 65nm process

65nm process technology
The 65nm process technology is considered today as the most advanced lithographic node used in CMOS fabrication. Fabs are undergoing a cross-over to 65nm as it replaces its precedent 90nm process.

What is DRAM?
Dynamic random access memory (DRAM) is a type of random access memory that stores each bit of data in a separate capacitor within an IC. Since real capacitors leak charge, the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to SRAM and other static memory. And unlike non-volatile firmware chips, both DRAM and SRAM lose their content when the power is turned off.