GDDR SDRAM
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Graphics DDR SDRAM (GDDR SDRAM) is a type of synchronous dynamic random-access memory (SDRAM) specifically designed for applications requiring high bandwidth,[1] e.g. graphics processing units (GPUs). GDDR SDRAM is distinct from the more widely known types of DDR SDRAM, such as DDR4 and DDR5, although they share some of the same features—including double data rate (DDR) data transfers. since 2025[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., GDDR SDRAM has been succeeded by GDDR2, GDDR3, GDDR4, GDDR5, GDDR5X, GDDR6, GDDR6X, GDDR6W and GDDR7.
Generations
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Hynix GDDR SDRAM
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A Samsung GDDR3 256MBit package
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A 512 MBit Qimonda GDDR3 SDRAM package
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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 16Script error: No such module "String".Mb memory chip by Samsung Electronics in 1998.[2]
GDDR2
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GDDR3
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GDDR4
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GDDR5
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GDDR6
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GDDR7
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Table of transfer rates
| Module type | Chip type | Memory clock | Transfers/s | Transfer rate | |
|---|---|---|---|---|---|
| 32 lanes | GDDR2 | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR3 | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR4 | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR5[3] | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR5X[4] | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR6 | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR6X | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 64 lanes | GDDR6W | ? | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
| 32 lanes | GDDR7 | ? | Script error: No such module "val". | Script error: No such module "val". | Script error: No such module "val". |
See also
References
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