Graphics DDR SDRAM (GDDR SDRAM) is a type of
synchronous dynamic random-access memory
Synchronous dynamic random-access memory (synchronous dynamic RAM or SDRAM) is any DRAM where the operation of its external pin interface is coordinated by an externally supplied clock signal.
DRAM integrated circuits (ICs) produced from the e ...
(SDRAM) specifically designed for applications requiring high bandwidth, e.g.
graphics processing unit
A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, m ...
s (GPUs). GDDR SDRAM is distinct from the more widely known types of
DDR SDRAM, such as
DDR4
Double Data Rate 4 Synchronous Dynamic Random-Access Memory (DDR4 SDRAM) is a type of synchronous dynamic random-access memory with a high bandwidth (" double data rate") interface.
Released to the market in 2014, it is a variant of dynamic ran ...
, although they share some of the same features—including double data rate data transfers. , GDDR SDRAM has been succeeded by
GDDR2,
GDDR3,
GDDR4,
GDDR5,
GDDR5X,
GDDR6, and
GDDR6X.
Generations
File:ATI Radeon X1300 256MB - Hynix HY5DU561622CTP-5-5390.jpg, Hynix GDDR SDRAM
File:SAMSUNG@QDDR3-SDRAM@256MBit@K5J55323QF-GC16 Stack-DSC01234-DSC01284 - ZS-retouched.jpg, A Samsung GDDR3 256MBit package
File:Sapphire Ultimate HD 4670 512MB - Qimonda HYB18H512321BF-10-93577.jpg, A 512 MBit Qimonda
Qimonda AG ( ) was a German memory company split out of Infineon Technologies (itself a spun off business unit of Siemens AG) on 1 May 2006 to form at the time the second largest DRAM company worldwide, according to the industry research firm ...
GDDR3 SDRAM package
File:SAMSUNG@QDDR3-SDRAM@256MBit@K5J55323QF-GC16 Stack-DSC01340-DSC01367 - ZS-retouched.jpg, Inside a Samsung GDDR3 256MBit package
DDR SGRAM
GDDR was initially known as
DDR SGRAM (double data rate synchronous graphics RAM). It was commercially introduced as a 16
Mb memory chip by
Samsung Electronics
Samsung Electronics Co., Ltd. (, sometimes shortened to SEC and stylized as SΛMSUNG) is a South Korean multinational electronics corporation headquartered in Yeongtong-gu, Suwon, South Korea. It is the pinnacle of the Samsung chaebol, acc ...
in 1998.
GDDR2
Main article:
DDR2 SDRAM
Double Data Rate 2 Synchronous Dynamic Random-Access Memory (DDR2 SDRAM) is a double data rate (DDR) synchronous dynamic random-access memory (SDRAM) interface. It superseded the original DDR SDRAM specification, and was itself superseded by DDR ...
GDDR3
GDDR4
GDDR5
GDDR6
Table of transfer rates
See also
*
Video random access memory
Video random access memory (VRAM) is dedicated computer memory used to store the pixels and other graphics data as a framebuffer to be rendered on a computer monitor. This is often different technology than other computer memory, to facilitate ...
*
Double data rate
In computing, a computer bus operating with double data rate (DDR) transfers data on both the rising and falling edges of the clock signal. This is also known as double pumped, dual-pumped, and double transition. The term toggle mode is used in ...
References
SDRAM
Graphics cards
South Korean inventions
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