GDDR4 SDRAM

This article is about DDR graphics RAM (SGRAM). For non-graphics (dynamic) DDR memory, see DDR4 SDRAM.
GDDR4 SDRAM
Graphics Double Data Rate 4 Synchronous Dynamic Random-Access Memory
Type of RAM
DeveloperJEDEC
TypeSynchronous dynamic random-access memory
Generation4th generation
PredecessorGDDR3 SDRAM
SuccessorGDDR5 SDRAM

Graphics Double Data Rate 4 Synchronous Dynamic Random-Access Memory (GDDR4 SDRAM) is a type of graphics card memory (SGRAM) specified by the JEDEC Semiconductor Memory Standard. It is a rival medium to Rambus's XDR DRAM. GDDR4 is based on DDR3 SDRAM technology and was intended to replace the DDR2-based GDDR3, but it ended up being replaced by GDDR5 (also based on DDR3) within a year.

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