eDRAM

An embedded DRAM ( eDRAM, dt embedded DRAM) is based on a DRAM embedded memory, that is, the DRAM is in the same or in the same module as the master ASIC or the main processor integrated ( embedded). In contrast to external DRAM memory modules, it is often as transistor-based SRAM used as cache.

Embedding the memory to external memory modules allows the use of wider buses and higher operating speeds. The reduced space requirement allows DRAM compared to SRAM higher data density, thus at the same die size potentially be used more memory. However, the differences make in the manufacturing process between DRAM and logic transistor integration on a The complicated, that is, there are usually more process steps are required, which increases the cost. Recent research therefore set, similar to the pseudo-static RAM in CMOS technology.

EDRAM is used as L3 and L4 cache memory in IBM mainframes as well as in many game consoles, among others, these: PlayStation 2, PlayStation Portable, Nintendo GameCube, Wii, Wii U and Xbox 360