GDDR SDRAM

Graphics DDR SDRAM (GDDR SDRAM) is a type of

GDDR6W

.

Generations

GDDR was initially known as

Mb memory chip by Samsung Electronics in 1998.^[2]

Module type	Chip type	Memory clock	Transfers/s	Transfer rate
32 lanes	GDDR2	400–500 MHz	0.8–1.0 GT/s	25.6–32.0 Gbit/s	3.2–4.0 GB/s
32 lanes	GDDR3	400–1000 MHz	0.8–2.0 GT/s	25.6–64.0 Gbit/s	3.2–8.0 GB/s
32 lanes	GDDR4	868–1126 MHz	1.7–2.3 GT/s	55.6–72.1 Gbit/s	6.9–9.0 GB/s
32 lanes	GDDR5^[3]	1000–2000 MHz	4.0–8.0 GT/s	128.0–256.0 Gbit/s	16.0–32.0 GB/s
32 lanes	GDDR5X^[4]	1000–1808 MHz	8.0–14.5 GT/s	256.0–462.8 Gbit/s	32.0–57.9 GB/s
32 lanes	GDDR6	1375–2500 MHz	11.0–20.0 GT/s	352.0–640.0 Gbit/s	44.0–80.0 GB/s
32 lanes	GDDR6X	1188–1438 MHz	19.0–23.0 GT/s	608.0–736.0 Gbit/s	76.0–92.0 GB/s
64 lanes	GDDR6W	?	22.0 GT/s	1408.0 Gbit/s	176.0 GB/s
32 lanes	GDDR7	?	28.0–40.0 GT/s	896.0–1280.0 Gbit/s	112.0–160.0 GB/s

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v t e Dynamic random-access memory (DRAM)
Asynchronous	FPM DRAM EDO DRAM
Synchronous	SDRAM DDR SDRAM DDR2 DDR3 DDR4 DDR5 LPDDR (Mobile DDR) Fast Cycle DRAM (FCRAM) eDRAM RLDRAM HBM HBM2 HBM2E HBM3 HBM-PIM HBM3E Hybrid Memory Cube
Graphics	VRAM WRAM MDRAM SGRAM GDDR GDDR2 GDDR3 GDDR4 GDDR5 GDDR6 GDDR7
Rambus	RDRAM XDR DRAM XDR2 DRAM
Memory modules	SIMM DIMM UniDIMM CAMM
Lists	DRAM timeline SDRAM timeline Bandwidth Transistor count