Editing Synchronous dynamic random-access memory (section)

=== Graphics double data rate SDRAM (GDDR SDRAM) ===
{{Main|GDDR SDRAM}}

Graphics [[double data rate]] SDRAM ([[GDDR SDRAM]]) is a type of specialized [[DDR SDRAM]] designed to be used as the main memory of [[graphics processing unit]]s (GPUs). GDDR SDRAM is distinct from commodity types of DDR SDRAM such as DDR3, although they share some core technologies. Their primary characteristics are higher clock frequencies for both the DRAM core and I/O interface, which provides greater memory bandwidth for GPUs. As of 2025, there are nine successive generations of GDDR: [[GDDR2]], [[GDDR3]], [[GDDR4]], [[GDDR5]], [[GDDR5X]], [[GDDR6]], [[GDDR6X]], [[GDDR6W]], and [[GDDR7]].

GDDR was initially known as DDR SGRAM. It was commercially introduced as a 16{{nbsp}}[[Megabit|Mbit]]{{binpre}} memory chip by [[Samsung Electronics]] in 1998.<ref name="samsung98"/>